JR-010: record how truth data was obtained

Three routes now deliver truth data -- a sidecar, a worker push, and a fetched
manifest -- and once stored they were indistinguishable. The truth file records
nothing about how it arrived, so a locally computed sidecar and a loose-tier
manifest from a third-party server looked identical to every reader, despite
making claims of very different strength about the same item.

TruthProvenance records source, server, match tier, applied offset and caveat.
GET /Items/{itemId}/Provenance serves it, and JR-036's loose-tier caveat now
has somewhere to come from.

Two decisions carried in the code rather than assumed:

Provenance is stored BESIDE the truth file, never inside it. Injecting fields
would mean the bytes served back are not the bytes the producer wrote, which is
the property JR-004 turns on. UT-026 pins it by asserting the stored truth JSON
contains no provenance keys.

The applied offset is recorded because it is otherwise unrecoverable. Once
JR-030 shifts every window the timings look native, and nothing else would say
they had been shifted -- which matters when diagnosing an overlay that is
consistently a few seconds out.

A sidecar's provenance is derived rather than stored: it is local, and its
timestamp is the file's own. Precedence resolves through the same rule as
GetTruthAsync, because resolving it twice by different rules is how the two
would drift.

Fourth mutation check: stopping Delete from removing provenance fails UT-027
alone -- a stale record would otherwise outlive its claim and describe data the
next fetch had already replaced.

TRACES: UT-024, UT-025, UT-026, UT-027, UT-028 | JR-010

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "scripts/vendor/jray-project"]
+	path = scripts/vendor/jray-project
+	url = git@gitea.tourolle.paris:dtourolle/jray-project.git

Jellyfin.Plugin.JRay.Tests/FileTransformationRegistrationTests.cs

@@ -0,0 +1,96 @@
+using System;
+using System.Collections.Generic;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
+using Microsoft.Extensions.Logging;
+using Xunit;
+
+namespace Jellyfin.Plugin.JRay.Tests;
+
+/// <summary>
+/// JR-023 — absent the File Transformation plugin, disable *only* the overlay
+/// and say so. There is no on-disk fallback (JR-021), so the failure path is
+/// the one an admin will actually meet, and it has to be legible: silently
+/// serving no overlay is indistinguishable from a broken install.
+///
+/// The File Transformation assembly is not loaded in the test host, so
+/// TryRegister exercises its not-found branch for real rather than through a
+/// seam invented for the test.
+///
+/// TRACES: UT-012, UT-013, UT-014, UT-015 | JR-023
+/// </summary>
+public class FileTransformationRegistrationTests
+{
+    // UT-012
+    [Fact]
+    public void TryRegister_WithPluginAbsent_ReturnsFalse()
+    {
+        Assert.False(FileTransformationRegistration.TryRegister(new CapturingLogger()));
+    }
+
+    // UT-013
+    [Fact]
+    public void TryRegister_WithPluginAbsent_WarnsNamingThePluginAndHowToInstallIt()
+    {
+        var logger = new CapturingLogger();
+
+        FileTransformationRegistration.TryRegister(logger);
+
+        var entry = Assert.Single(logger.Entries);
+
+        // Warning, not Information: the overlay is a headline feature and it is
+        // off. Logging this at Information buries it among startup chatter.
+        Assert.Equal(LogLevel.Warning, entry.Level);
+
+        // The message has to carry the install URL, and must not promise the
+        // on-disk fallback that JR-021 removed.
+        Assert.Contains(FileTransformationRegistration.ManifestUrl, entry.Message, StringComparison.Ordinal);
+        Assert.DoesNotContain("falling back", entry.Message, StringComparison.OrdinalIgnoreCase);
+    }
+
+    // UT-014
+    [Fact]
+    public void TransformIndexHtml_WithOverlayDisabled_ReturnsContentsUnchanged()
+    {
+        // No Plugin instance exists in the test host, so OverlayEnabled is
+        // false — the same branch taken when an admin switches the overlay off.
+        var html = "<html><body><div>x</div>\n</body></html>";
+
+        var result = FileTransformationRegistration.TransformIndexHtml(
+            new TransformationPayload { Contents = html });
+
+        Assert.Equal(html, result);
+    }
+
+    // UT-015
+    [Fact]
+    public void TransformIndexHtml_WithNullContents_ReturnsEmptyRatherThanThrowing()
+    {
+        // This callback is invoked by another plugin's code on every page
+        // served. Throwing here would break the web client itself, not just
+        // JRay's overlay.
+        var result = FileTransformationRegistration.TransformIndexHtml(new TransformationPayload());
+
+        Assert.Equal(string.Empty, result);
+    }
+
+    private sealed class CapturingLogger : ILogger
+    {
+        public List<(LogLevel Level, string Message)> Entries { get; } = new();
+
+        public IDisposable? BeginScope<TState>(TState state)
+            where TState : notnull => null;
+
+        public bool IsEnabled(LogLevel logLevel) => true;
+
+        public void Log<TState>(
+            LogLevel logLevel,
+            EventId eventId,
+            TState state,
+            Exception? exception,
+            Func<TState, Exception?, string> formatter)
+        {
+            Entries.Add((logLevel, formatter(state, exception)));
+        }
+    }
+}

Jellyfin.Plugin.JRay.Tests/Jellyfin.Plugin.JRay.Tests.csproj

@@ -0,0 +1,56 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+    <!--
+      The plugin project treats warnings as errors and runs StyleCop. Tests do
+      not inherit that: their naming conventions differ deliberately (Method_
+      Condition_Expectation reads as documentation, and trips SA1300-family
+      rules), and a style failure in a test is not a defect in the thing under
+      test.
+    -->
+    <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+    <GenerateDocumentationFile>false</GenerateDocumentationFile>
+    <!--
+      The plugin targets net9.0 to match Jellyfin's ABI, but a machine that can
+      build it need not have the 9.0 *runtime* installed. Roll the test host
+      forward to whatever major is present so the suite runs on a developer box
+      and on CI without pinning either to a runtime that is not the plugin's.
+    -->
+    <RollForward>LatestMajor</RollForward>
+    <!--
+      The plugin framework-references Microsoft.AspNetCore.App through
+      Jellyfin.Controller, and that reference flows into anything referencing
+      the plugin. The T1 tier tests pure logic that touches no web type, so
+      inheriting the web framework would make the suite unrunnable on any box
+      without the ASP.NET Core runtime for no benefit. .NET resolves assemblies
+      lazily, so types that never touch ASP.NET load fine without it.
+
+      T2 (controllers, authorisation) genuinely needs that runtime. When those
+      tests arrive they belong in a second project that keeps this reference.
+    -->
+    <DisableTransitiveFrameworkReferences>true</DisableTransitiveFrameworkReferences>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <!--
+      The plugin sets ExcludeAssets=runtime on these: at run time the Jellyfin
+      server supplies them, so shipping copies in the plugin would risk loading
+      a second, different MediaBrowser.Common. The test host is not the server,
+      so it has to bring its own — hence the same packages without that
+      exclusion, and only here.
+    -->
+    <PackageReference Include="Jellyfin.Controller" Version="10.11.5" />
+    <PackageReference Include="Jellyfin.Model" Version="10.11.5" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Jellyfin.Plugin.JRay\Jellyfin.Plugin.JRay.csproj" />
+  </ItemGroup>
+
+</Project>

Jellyfin.Plugin.JRay.Tests/ManagedTruthStoreTests.cs

@@ -0,0 +1,194 @@
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using Jellyfin.Plugin.JRay.Configuration;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
+using MediaBrowser.Common.Configuration;
+using Microsoft.Extensions.Logging.Abstractions;
+using Xunit;
+
+namespace Jellyfin.Plugin.JRay.Tests;
+
+/// <summary>
+/// JR-010 — three sources now deliver truth data (sidecar, pushed, fetched) and
+/// they are not interchangeable. A locally computed sidecar and a
+/// <c>loose</c>-tier manifest from a third-party server make claims of very
+/// different strength about the same item, and the truth file itself records
+/// nothing about how it arrived.
+///
+/// TRACES: UT-024, UT-025, UT-026, UT-027, UT-028 | JR-010
+/// </summary>
+public class ManagedTruthStoreTests : IDisposable
+{
+    private readonly string _root;
+    private readonly ManagedTruthStore _store;
+
+    public ManagedTruthStoreTests()
+    {
+        _root = Path.Combine(Path.GetTempPath(), "jray-tests-" + Guid.NewGuid().ToString("N"));
+        Directory.CreateDirectory(_root);
+        _store = new ManagedTruthStore(new FakePaths(_root), NullLogger<ManagedTruthStore>.Instance);
+    }
+
+    public void Dispose()
+    {
+        GC.SuppressFinalize(this);
+        if (Directory.Exists(_root))
+        {
+            Directory.Delete(_root, recursive: true);
+        }
+    }
+
+    private static TruthFile Truth()
+    {
+        var truth = new TruthFile { SchemaVersion = 1, Movie = "/m.mkv" };
+        var actor = new TruthActor { Name = "A", TmdbId = "884" };
+        actor.Scenes.Add([1.0, 2.0]);
+        truth.Actors.Add(actor);
+        return truth;
+    }
+
+    // UT-024
+    [Fact]
+    public async Task SaveAsync_ThenLoadProvenance_RoundTripsAFetchedClaim()
+    {
+        var id = Guid.NewGuid();
+        var recorded = new DateTime(2026, 7, 31, 12, 0, 0, DateTimeKind.Utc);
+
+        await _store.SaveAsync(
+            id,
+            Truth(),
+            new TruthProvenance
+            {
+                Source = TruthSource.Fetched,
+                ServerUrl = "https://jray.example",
+                MatchTier = MatchTier.Loose,
+                OffsetSec = -12.5,
+                Caveat = "loose match",
+                RecordedAt = recorded,
+            },
+            CancellationToken.None);
+
+        var loaded = _store.LoadProvenance(id);
+
+        Assert.NotNull(loaded);
+        Assert.Equal(TruthSource.Fetched, loaded!.Source);
+        Assert.Equal("https://jray.example", loaded.ServerUrl);
+        Assert.Equal(MatchTier.Loose, loaded.MatchTier);
+
+        // The offset is unrecoverable once applied: the stored windows look
+        // native, and nothing else would say they had been shifted.
+        Assert.Equal(-12.5, loaded.OffsetSec);
+        Assert.Equal("loose match", loaded.Caveat);
+        Assert.Equal(recorded, loaded.RecordedAt);
+    }
+
+    // UT-025
+    [Fact]
+    public async Task SaveAsync_LocalPush_RecordsNoServerOrTier()
+    {
+        var id = Guid.NewGuid();
+
+        await _store.SaveAsync(
+            id,
+            Truth(),
+            TruthProvenance.Local(TruthSource.Pushed, DateTime.UtcNow),
+            CancellationToken.None);
+
+        var loaded = _store.LoadProvenance(id)!;
+
+        Assert.Equal(TruthSource.Pushed, loaded.Source);
+        Assert.Equal(string.Empty, loaded.ServerUrl);
+
+        // A push is about *this* file, so there is no cut to match. A tier here
+        // would be a fabricated claim.
+        Assert.Null(loaded.MatchTier);
+    }
+
+    // UT-026
+    [Fact]
+    public async Task SaveAsync_DoesNotWriteProvenanceIntoTheTruthFile()
+    {
+        var id = Guid.NewGuid();
+        await _store.SaveAsync(id, Truth(), TruthProvenance.Local(TruthSource.Pushed, DateTime.UtcNow), CancellationToken.None);
+
+        var truthJson = await File.ReadAllTextAsync(
+            Path.Combine(_root, "plugins", "configurations", "JRay", "truth", id.ToString("D") + ".json"));
+
+        // JR-004: the bytes served back are the bytes the producer wrote.
+        Assert.DoesNotContain("source", truthJson, StringComparison.OrdinalIgnoreCase);
+        Assert.DoesNotContain("match_tier", truthJson, StringComparison.OrdinalIgnoreCase);
+    }
+
+    // UT-027
+    [Fact]
+    public async Task Delete_RemovesProvenanceToo()
+    {
+        var id = Guid.NewGuid();
+        await _store.SaveAsync(id, Truth(), TruthProvenance.Local(TruthSource.Pushed, DateTime.UtcNow), CancellationToken.None);
+
+        Assert.True(_store.Delete(id));
+
+        // A stale provenance record outliving its truth file would describe data
+        // the next fetch has already replaced.
+        Assert.Null(_store.LoadProvenance(id));
+        Assert.False(_store.Exists(id));
+    }
+
+    // UT-028
+    [Fact]
+    public void LoadProvenance_ForUnknownItem_ReturnsNull()
+    {
+        Assert.Null(_store.LoadProvenance(Guid.NewGuid()));
+    }
+
+    private sealed class FakePaths : IApplicationPaths
+    {
+        public FakePaths(string root)
+        {
+            ProgramDataPath = root;
+            PluginsPath = Path.Combine(root, "plugins");
+            PluginConfigurationsPath = Path.Combine(root, "plugins", "configurations");
+        }
+
+        public string ProgramDataPath { get; }
+
+        public string WebPath => Path.Combine(ProgramDataPath, "web");
+
+        public string ProgramSystemPath => ProgramDataPath;
+
+        public string DataPath => ProgramDataPath;
+
+        public string ImageCachePath => ProgramDataPath;
+
+        public string PluginsPath { get; }
+
+        public string PluginConfigurationsPath { get; }
+
+        public string LogDirectoryPath => ProgramDataPath;
+
+        public string ConfigurationDirectoryPath => ProgramDataPath;
+
+        public string SystemConfigurationFilePath => Path.Combine(ProgramDataPath, "system.xml");
+
+        public string CachePath { get; set; } = string.Empty;
+
+        public string TempDirectory => Path.Combine(ProgramDataPath, "temp");
+
+        public string TrickplayPath => Path.Combine(ProgramDataPath, "trickplay");
+
+        public string VirtualDataPath => ProgramDataPath;
+
+        public string BackupPath => Path.Combine(ProgramDataPath, "backup");
+
+        public void MakeSanityCheckOrThrow()
+        {
+        }
+
+        public void CreateAndCheckMarker(string path, string markerName, bool recursive = false)
+        {
+        }
+    }
+}

Jellyfin.Plugin.JRay.Tests/ManifestExchangeTests.cs

@@ -0,0 +1,319 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Jellyfin.Plugin.JRay.Configuration;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
+using Xunit;
+
+namespace Jellyfin.Plugin.JRay.Tests;
+
+/// <summary>
+/// Tests for the manifest exchange: tier policy, transport rules, validation on
+/// receipt, and offset application.
+/// </summary>
+public class ManifestExchangeTests
+{
+    private static ManifestServer Server(string url) =>
+        new() { Url = url, Name = "test", Enabled = true };
+
+    private static TitleQuery Query() =>
+        new() { TmdbId = "504172", RuntimeSec = 6420.5 };
+
+    // -----------------------------------------------------------------------
+    // The withdrawn file-hash tier
+    // -----------------------------------------------------------------------
+
+    [Fact]
+    public void MatchTierHasNoExactMember()
+    {
+        // The `exact` tier keyed on an OpenSubtitles file hash and was withdrawn
+        // on legal grounds: a file hash identifies the exact release a user
+        // holds, not the cut the timings describe, so sending one turns a
+        // catalogue lookup into a release-identification service.
+        //
+        // Asserted on the enum rather than trusted, because "we removed it" is
+        // exactly the kind of decision a later reader re-adds as an oversight.
+        var names = Enum.GetNames<MatchTier>();
+        Assert.DoesNotContain("Exact", names);
+        Assert.Equal(new[] { "Loose", "Runtime", "Audio" }, names);
+    }
+
+    [Fact]
+    public void AudioIsTheTopTier()
+    {
+        // Content-derived, so it identifies the cut rather than the copy — which
+        // is what makes it an acceptable replacement for the file hash.
+        Assert.True(MatchTier.Audio > MatchTier.Runtime);
+        Assert.True(MatchTier.Runtime > MatchTier.Loose);
+        Assert.Equal(MatchTier.Audio, Enum.GetValues<MatchTier>().Max());
+    }
+
+    [Fact]
+    public void NoVideoHashIsEverSent()
+    {
+        // Structural, not merely policy: `TitleQuery` has no VideoHash property,
+        // so there is nothing a future caller could populate.
+        Assert.Null(typeof(TitleQuery).GetProperty("VideoHash"));
+
+        var query = new TitleQuery { TmdbId = "504172", RuntimeSec = 6420.5 };
+        Assert.DoesNotContain("video_hash", query.ToQueryString(), StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void AServerReportingTheWithdrawnTierIsDeclined()
+    {
+        // A server may still hold hashes from other clients. If one somehow
+        // reports `exact`, it is unrecognised rather than silently accepted
+        // under a tier this plugin has no policy for.
+        Assert.Null(ManifestExchangeClient.ParseTier("exact"));
+        Assert.Equal(MatchTier.Audio, ManifestExchangeClient.ParseTier("audio"));
+        Assert.Equal(MatchTier.Runtime, ManifestExchangeClient.ParseTier("runtime"));
+        Assert.Equal(MatchTier.Loose, ManifestExchangeClient.ParseTier("loose"));
+        Assert.Null(ManifestExchangeClient.ParseTier("nonsense"));
+    }
+
+    // -----------------------------------------------------------------------
+    // Transport
+    // -----------------------------------------------------------------------
+
+    [Theory]
+    [InlineData("https://jray.tourolle.paris", true)]
+    [InlineData("https://third.party.example", true)]
+    [InlineData("http://127.0.0.1:8080", true)]
+    [InlineData("http://localhost:8080", true)]
+    [InlineData("http://jray.tourolle.paris", false)]
+    [InlineData("http://192.168.1.10:8080", false)]
+    [InlineData("ftp://example.com", false)]
+    public void HttpsIsRequiredAwayFromLoopback(string url, bool acceptable)
+    {
+        // A plaintext server would let any network intermediary rewrite actor
+        // overlays, and the overlay is shown to the user as fact. Loopback is
+        // exempt because there is no network path to intercept.
+        Assert.Equal(acceptable, ManifestExchangeClient.IsTransportAcceptable(new Uri(url)));
+    }
+
+    [Fact]
+    public void AnUnusableServerUrlYieldsNoRequest()
+    {
+        Assert.Null(ManifestExchangeClient.BuildUrl(Server("http://example.com"), "manifests/movie", Query()));
+        Assert.Null(ManifestExchangeClient.BuildUrl(Server("not a url"), "manifests/movie", Query()));
+    }
+
+    [Fact]
+    public void QueryParametersAreEscaped()
+    {
+        var url = ManifestExchangeClient.BuildUrl(
+            Server("https://s.example/"),
+            "manifests/movie",
+            new TitleQuery { TmdbId = "504172", RuntimeSec = 6420.5 });
+
+        Assert.NotNull(url);
+        Assert.StartsWith("https://s.example/api/v1/manifests/movie?", url!.AbsoluteUri, StringComparison.Ordinal);
+        Assert.Contains("tmdb_id=504172", url.AbsoluteUri, StringComparison.Ordinal);
+        // Invariant formatting, so a comma-decimal locale cannot corrupt the runtime.
+        Assert.Contains("runtime_sec=6420.5", url.AbsoluteUri, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void EpisodeCoordinatesAreSent()
+    {
+        var url = ManifestExchangeClient.BuildUrl(
+            Server("https://s.example"),
+            "manifests/episode",
+            new TitleQuery { SeriesTmdbId = "1396", Season = 2, Episode = 5, RuntimeSec = 2820 });
+
+        Assert.NotNull(url);
+        Assert.Contains("series_tmdb_id=1396", url!.AbsoluteUri, StringComparison.Ordinal);
+        Assert.Contains("season=2", url.AbsoluteUri, StringComparison.Ordinal);
+        Assert.Contains("episode=5", url.AbsoluteUri, StringComparison.Ordinal);
+    }
+
+    // -----------------------------------------------------------------------
+    // Validation on receipt — every server is untrusted
+    // -----------------------------------------------------------------------
+
+    private static Jmanifest ValidManifest()
+    {
+        var m = new Jmanifest { JmanifestVersion = 2 };
+        m.Identity = new JmanifestIdentity { Type = "movie", TmdbId = "504172" };
+        m.Cut = new JmanifestCut { RuntimeSec = 6420.5 };
+        var actor = new JmanifestActor { Name = "Steve Buscemi", TmdbId = "884" };
+        actor.Scenes.Add(new JmanifestScene { Start = 191.6, End = 209.2, Belief = 0.98, Route = "live" });
+        m.Actors.Add(actor);
+        return m;
+    }
+
+    [Fact]
+    public void AWellFormedManifestValidates()
+    {
+        Assert.True(ManifestValidator.TryValidate(ValidManifest(), 6420.5, out var error), error);
+    }
+
+    [Fact]
+    public void AnUnknownEnvelopeVersionIsRefused()
+    {
+        // Never guessed at: a server one version ahead may have changed the
+        // meaning of a field this plugin thinks it understands.
+        foreach (var version in new[] { 0, 1, 3, 99 })
+        {
+            var m = ValidManifest();
+            m.JmanifestVersion = version;
+            Assert.False(ManifestValidator.TryValidate(m, 6420.5, out var error));
+            Assert.Contains("jmanifest_version", error, StringComparison.Ordinal);
+        }
+    }
+
+    [Fact]
+    public void WindowsBeyondTheLocalRuntimeAreRejected()
+    {
+        // Bounds are checked against the *local* file, because that is what the
+        // overlay indexes into. A window past the end is evidence the manifest
+        // describes another cut.
+        var m = ValidManifest();
+        m.Actors[0].Scenes.Clear();
+        m.Actors[0].Scenes.Add(new JmanifestScene { Start = 10, End = 9000 });
+        Assert.False(ManifestValidator.TryValidate(m, 6420.5, out var error));
+        Assert.Contains("runtime", error, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void InvertedNegativeAndNonFiniteWindowsAreRejected()
+    {
+        foreach (var scene in new[]
+        {
+            new JmanifestScene { Start = 50, End = 10 },
+            new JmanifestScene { Start = -1, End = 10 },
+            new JmanifestScene { Start = double.NaN, End = 10 },
+            new JmanifestScene { Start = 0, End = double.PositiveInfinity },
+        })
+        {
+            var m = ValidManifest();
+            m.Actors[0].Scenes.Clear();
+            m.Actors[0].Scenes.Add(scene);
+            Assert.False(ManifestValidator.TryValidate(m, 6420.5, out _));
+        }
+    }
+
+    [Fact]
+    public void BeliefOutsideZeroToOneIsRejected()
+    {
+        foreach (var belief in new[] { -0.1, 1.5, double.NaN })
+        {
+            var m = ValidManifest();
+            m.Actors[0].Scenes[0].Belief = belief;
+            Assert.False(ManifestValidator.TryValidate(m, 6420.5, out var error));
+            Assert.Contains("belief", error, StringComparison.Ordinal);
+        }
+    }
+
+    [Fact]
+    public void MalformedIdentifiersAreRejected()
+    {
+        var m = ValidManifest();
+        m.Actors[0].TmdbId = "884'; DROP TABLE--";
+        Assert.False(ManifestValidator.TryValidate(m, 6420.5, out _));
+
+        m = ValidManifest();
+        m.Actors[0].ImdbId = "tt0000114"; // a title id in a person field
+        Assert.False(ManifestValidator.TryValidate(m, 6420.5, out _));
+    }
+
+    [Fact]
+    public void ControlCharactersInANameAreRejected()
+    {
+        // The overlay renders names as text nodes, so markup is already inert —
+        // but a bidi override still makes a name display as something other than
+        // what was stored.
+        foreach (var name in new[] { "SteveBuscemi", "Steve‮imecsuB", "Steve​Buscemi" })
+        {
+            var m = ValidManifest();
+            m.Actors[0].Name = name;
+            Assert.False(ManifestValidator.TryValidate(m, 6420.5, out _));
+        }
+    }
+
+    [Fact]
+    public void RealNamesAreAccepted()
+    {
+        foreach (var name in new[] { "Steve Buscemi", "Renée Zellweger", "宮崎 駿", "O'Brien" })
+        {
+            var m = ValidManifest();
+            m.Actors[0].Name = name;
+            Assert.True(ManifestValidator.TryValidate(m, 6420.5, out var error), $"{name}: {error}");
+        }
+    }
+
+    [Fact]
+    public void DuplicateActorsAreRejected()
+    {
+        var m = ValidManifest();
+        var dup = new JmanifestActor { Name = "Steve Buscemi", TmdbId = "884" };
+        dup.Scenes.Add(new JmanifestScene { Start = 1, End = 2 });
+        m.Actors.Add(dup);
+        Assert.False(ManifestValidator.TryValidate(m, 6420.5, out _));
+    }
+
+    // -----------------------------------------------------------------------
+    // Offset application
+    // -----------------------------------------------------------------------
+
+    [Fact]
+    public void TheOffsetIsAppliedToEveryWindow()
+    {
+        // Applied once, at store time, so the stored truth is always in the
+        // local file's timebase and no reader needs offset awareness.
+        var m = ValidManifest();
+        m.Actors[0].Scenes.Clear();
+        m.Actors[0].Scenes.Add(new JmanifestScene { Start = 100, End = 120 });
+        m.Actors[0].Scenes.Add(new JmanifestScene { Start = 200, End = 220 });
+
+        var truth = ManifestConverter.ToTruthFile(m, 40, "/media/film.mkv");
+
+        Assert.Equal(new[] { 140.0, 160.0 }, truth.Actors[0].Scenes[0]);
+        Assert.Equal(new[] { 240.0, 260.0 }, truth.Actors[0].Scenes[1]);
+    }
+
+    [Fact]
+    public void ANegativeOffsetCannotPushAWindowBelowZero()
+    {
+        // A start before the file begins is not indexable by any reader.
+        var m = ValidManifest();
+        m.Actors[0].Scenes.Clear();
+        m.Actors[0].Scenes.Add(new JmanifestScene { Start = 5, End = 20 });
+
+        var truth = ManifestConverter.ToTruthFile(m, -40, "/media/film.mkv");
+
+        Assert.Equal(0.0, truth.Actors[0].Scenes[0][0]);
+        Assert.True(truth.Actors[0].Scenes[0][1] >= truth.Actors[0].Scenes[0][0]);
+    }
+
+    [Fact]
+    public void WindowsAreShiftedNeverReshaped()
+    {
+        // A window is a claim about scene membership (SR-002), so merging
+        // adjacent windows would answer a different question than the pipeline
+        // answered — "was a face visible" rather than "was the actor present".
+        var m = ValidManifest();
+        m.Actors[0].Scenes.Clear();
+        m.Actors[0].Scenes.Add(new JmanifestScene { Start = 10, End = 20 });
+        m.Actors[0].Scenes.Add(new JmanifestScene { Start = 20, End = 30 });
+
+        var truth = ManifestConverter.ToTruthFile(m, 0, "/media/film.mkv");
+
+        Assert.Equal(2, truth.Actors[0].Scenes.Count);
+        Assert.Equal(new[] { 10.0, 20.0 }, truth.Actors[0].Scenes[0]);
+        Assert.Equal(new[] { 20.0, 30.0 }, truth.Actors[0].Scenes[1]);
+    }
+
+    [Fact]
+    public void ALooseMatchSurfacesACaveat()
+    {
+        // Applied as a caveat rather than silently: the runtimes differ by up to
+        // 30 seconds, which is usually a different trim of the same cut but is
+        // not guaranteed to be.
+        Assert.NotNull(ManifestConverter.DescribeCaveat(MatchTier.Loose, 0));
+        Assert.NotNull(ManifestConverter.DescribeCaveat(MatchTier.Audio, 40));
+        Assert.Null(ManifestConverter.DescribeCaveat(MatchTier.Runtime, 0));
+    }
+}

Jellyfin.Plugin.JRay.Tests/PolicyResolverTests.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
+using Xunit;
+
+namespace Jellyfin.Plugin.JRay.Tests;
+
+/// <summary>
+/// JR-016 — prioritise/ignore rules resolve by specificity: Item beats Series
+/// beats Genre. A scope+value holds only one action, so the only conflicts
+/// possible are across scopes, and that is exactly what these cover.
+///
+/// TRACES: UT-007, UT-008, UT-009, UT-010, UT-011 | JR-016
+/// </summary>
+public class PolicyResolverTests
+{
+    private static readonly Guid ItemId = Guid.Parse("11111111-1111-1111-1111-111111111111");
+    private static readonly Guid SeriesId = Guid.Parse("22222222-2222-2222-2222-222222222222");
+
+    private static MediaPolicyRule Rule(PolicyScope scope, string value, PolicyAction action)
+        => new() { Scope = scope, Value = value, Action = action };
+
+    // UT-007
+    [Fact]
+    public void Resolve_WithNoMatchingRule_ReturnsNull()
+    {
+        var rules = new List<MediaPolicyRule> { Rule(PolicyScope.Genre, "Anime", PolicyAction.Ignore) };
+
+        Assert.Null(PolicyResolver.Resolve(rules, ItemId, SeriesId, new[] { "Drama" }));
+    }
+
+    // UT-008
+    [Fact]
+    public void Resolve_ItemRuleBeatsSeriesRule()
+    {
+        var rules = new List<MediaPolicyRule>
+        {
+            Rule(PolicyScope.Series, SeriesId.ToString("D"), PolicyAction.Ignore),
+            Rule(PolicyScope.Item, ItemId.ToString("D"), PolicyAction.Prioritise),
+        };
+
+        Assert.Equal(PolicyAction.Prioritise, PolicyResolver.Resolve(rules, ItemId, SeriesId, Array.Empty<string>()));
+    }
+
+    // UT-009
+    [Fact]
+    public void Resolve_PrioritisedSeriesInsideIgnoredGenre_SeriesWins()
+    {
+        // The case that motivated specificity resolution: an admin ignores a
+        // whole genre but wants one series out of it anyway. If genre won, the
+        // more specific instruction would be silently discarded.
+        var rules = new List<MediaPolicyRule>
+        {
+            Rule(PolicyScope.Genre, "Anime", PolicyAction.Ignore),
+            Rule(PolicyScope.Series, SeriesId.ToString("D"), PolicyAction.Prioritise),
+        };
+
+        Assert.Equal(PolicyAction.Prioritise, PolicyResolver.Resolve(rules, ItemId, SeriesId, new[] { "Anime" }));
+    }
+
+    // UT-010
+    [Fact]
+    public void Resolve_GenreMatchIsCaseInsensitive()
+    {
+        var rules = new List<MediaPolicyRule> { Rule(PolicyScope.Genre, "anime", PolicyAction.Ignore) };
+
+        Assert.Equal(PolicyAction.Ignore, PolicyResolver.Resolve(rules, ItemId, SeriesId, new[] { "AnImE" }));
+    }
+
+    // UT-011
+    [Fact]
+    public void Resolve_SeriesRuleDoesNotMatchNonEpisode()
+    {
+        // A movie carries Guid.Empty as its series id. A series rule whose value
+        // happened to be an empty GUID must not swallow every movie in the
+        // library.
+        var rules = new List<MediaPolicyRule>
+        {
+            Rule(PolicyScope.Series, Guid.Empty.ToString("D"), PolicyAction.Ignore),
+        };
+
+        Assert.Null(PolicyResolver.Resolve(rules, ItemId, Guid.Empty, Array.Empty<string>()));
+    }
+}

Jellyfin.Plugin.JRay.Tests/PresenceLookupTests.cs

@@ -0,0 +1,150 @@
+using System.Diagnostics;
+using System.Linq;
+using System.Text.Json;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
+using Xunit;
+
+namespace Jellyfin.Plugin.JRay.Tests;
+
+/// <summary>
+/// JR-004 (windows are scene-membership claims, served verbatim), JR-005 (query
+/// semantics and inclusive bounds) and JR-006 (numerous windows).
+///
+/// These pin the semantics SR-002 sets. The failure they exist to prevent is a
+/// well-meaning "tidy-up" — merging adjacent windows, trimming a zero-length
+/// one, or collapsing overlaps — each of which silently answers a different
+/// question from the one the truth file asked.
+///
+/// TRACES: UT-016, UT-017, UT-018, UT-019, UT-020, UT-021, UT-022, UT-023 | JR-004, JR-005, JR-006
+/// </summary>
+public class PresenceLookupTests
+{
+    private static TruthActor Actor(params double[][] windows)
+    {
+        var actor = new TruthActor { Name = "Steve Buscemi", TmdbId = "884" };
+        foreach (var w in windows)
+        {
+            actor.Scenes.Add(w);
+        }
+
+        return actor;
+    }
+
+    // UT-016
+    [Theory]
+    [InlineData(12.0)]   // exactly the start
+    [InlineData(30.0)]   // inside
+    [InlineData(45.0)]   // exactly the end
+    public void IsPresentAt_WithinInclusiveBounds_IsPresent(double t)
+    {
+        // Both ends inclusive: a window is [start, end], not [start, end).
+        Assert.True(PresenceLookup.IsPresentAt(Actor([12.0, 45.0]), t));
+    }
+
+    // UT-017
+    [Theory]
+    [InlineData(11.999)]
+    [InlineData(45.001)]
+    public void IsPresentAt_OutsideBounds_IsAbsent(double t)
+    {
+        Assert.False(PresenceLookup.IsPresentAt(Actor([12.0, 45.0]), t));
+    }
+
+    // UT-018
+    [Fact]
+    public void IsPresentAt_ZeroLengthWindow_IsPresentAtThatInstant()
+    {
+        // A single sighting is a legitimate window. Discarding it as degenerate
+        // would drop the actor from a scene they are demonstrably in.
+        Assert.True(PresenceLookup.IsPresentAt(Actor([30.0, 30.0]), 30.0));
+    }
+
+    // UT-019
+    [Fact]
+    public void IsPresentAt_OverlappingWindows_IsPresentInsideTheEnclosingOne()
+    {
+        // [0,100] encloses [50,60]. A lookup that assumed non-overlapping,
+        // sorted windows and stopped at the first start > t would miss t = 80.
+        Assert.True(PresenceLookup.IsPresentAt(Actor([0.0, 100.0], [50.0, 60.0]), 80.0));
+    }
+
+    // UT-020
+    [Fact]
+    public void IsPresentAt_UnsortedWindows_StillFindsPresence()
+    {
+        // Sortedness is a producer guarantee, not something correctness may
+        // depend on. A file that violates it must still be read correctly.
+        var actor = Actor([100.0, 110.0], [10.0, 20.0]);
+
+        Assert.True(PresenceLookup.IsPresentAt(actor, 15.0));
+        Assert.False(PresenceLookup.WindowsAreSorted(actor));
+    }
+
+    // UT-021
+    [Fact]
+    public void ActorsPresentAt_AdjacentWindowsAreNeverMerged()
+    {
+        // [0,10] and [10,20] look mergeable. They must not be merged: two
+        // windows mean a genuine departure and return, and the plugin does not
+        // reinterpret that claim. The actor is reported once, from two windows.
+        var truth = new TruthFile();
+        truth.Actors.Add(Actor([0.0, 10.0], [10.0, 20.0]));
+
+        Assert.Single(PresenceLookup.ActorsPresentAt(truth, 10.0));
+        Assert.Equal(2, truth.Actors[0].Scenes.Count);
+    }
+
+    // UT-022
+    [Fact]
+    public void TruthFile_RoundTrips_WithWindowsByteIdentical()
+    {
+        // JR-004: served exactly as given. A round trip through the serializer
+        // is where a silent normalisation would show up.
+        const string Json = """
+        {"schema_version":1,"movie":"/m.mkv","sample_fps":1,"anneal_sec":2,
+         "actors":[{"name":"A","imdb_id":"","tmdb_id":"884","jellyfin_id":"",
+                    "scenes":[[0.0,10.0],[10.0,20.0],[30.0,30.0]]}]}
+        """;
+
+        var parsed = JsonSerializer.Deserialize<TruthFile>(Json, new JsonSerializerOptions(JsonSerializerDefaults.Web))!;
+        var windows = parsed.Actors[0].Scenes;
+
+        Assert.Equal(3, windows.Count);
+        Assert.Equal([0.0, 10.0], windows[0]);
+        Assert.Equal([10.0, 20.0], windows[1]);
+        Assert.Equal([30.0, 30.0], windows[2]);
+    }
+
+    // UT-023
+    [Fact]
+    public void ActorsPresentAt_WithManyWindows_StaysCheapAndBoundsTheResponse()
+    {
+        // SR-002: windows may be numerous; consumers must not assume a handful
+        // of long ones. Track-extent presence with a short re-acquisition
+        // timeout produces many short windows per actor.
+        var truth = new TruthFile();
+        for (var a = 0; a < 50; a++)
+        {
+            var actor = Actor();
+            for (var w = 0; w < 1000; w++)
+            {
+                actor.Scenes.Add([w * 10.0, (w * 10.0) + 4.0]);
+            }
+
+            truth.Actors.Add(actor);
+        }
+
+        var sw = Stopwatch.StartNew();
+        var present = PresenceLookup.ActorsPresentAt(truth, 5002.0).ToList();
+        sw.Stop();
+
+        // The response is bounded by actor count, never by window count — which
+        // is what keeps `jray?t=` small however finely presence is sliced.
+        Assert.Equal(50, present.Count);
+
+        // 50 000 windows scanned. Generous bound: this asserts the read path is
+        // not accidentally quadratic, not a precise budget on a shared runner.
+        Assert.True(sw.ElapsedMilliseconds < 250, $"lookup took {sw.ElapsedMilliseconds} ms");
+    }
+}

Jellyfin.Plugin.JRay.Tests/WebClientPatchServiceTests.cs

@@ -0,0 +1,92 @@
+using Jellyfin.Plugin.JRay.Services;
+using Xunit;
+
+namespace Jellyfin.Plugin.JRay.Tests;
+
+/// <summary>
+/// JR-022 — an earlier JRay injected its overlay script into index.html on
+/// disk. Those users must not be left with a stale injection pointing at
+/// endpoints that have since changed, so removal survives even though JR-021
+/// deleted the injection that created it.
+///
+/// Removal keys on JRay's own marker. The cases that matter are the ones where
+/// it could reach too far: another plugin's injection, or a script tag that
+/// looks like JRay's but carries no marker.
+///
+/// TRACES: UT-001, UT-002, UT-003, UT-004, UT-005 | JR-022
+/// </summary>
+public class WebClientPatchServiceTests
+{
+    private const string Marker = "<!-- jray-overlay -->";
+    private const string ScriptTag = "<script defer src=\"/Plugins/JRay/ClientScript\"></script>";
+
+    // UT-001
+    [Fact]
+    public void RemoveInjection_WithMarkedTagAndNewline_RestoresOriginalBytes()
+    {
+        var original = "<html><body><div>x</div>\n</body></html>";
+        var patched = "<html><body><div>x</div>\n" + ScriptTag + Marker + "\n</body></html>";
+
+        // The trailing newline goes with the tag. If it did not, every
+        // install/uninstall cycle would leave another blank line behind.
+        Assert.Equal(original, WebClientPatchService.RemoveInjection(patched));
+    }
+
+    // UT-002
+    [Fact]
+    public void RemoveInjection_WithMarkedTagAndNoNewline_RemovesTag()
+    {
+        var patched = "<html><body>" + ScriptTag + Marker + "</body></html>";
+
+        Assert.Equal("<html><body></body></html>", WebClientPatchService.RemoveInjection(patched));
+    }
+
+    // UT-003
+    [Fact]
+    public void RemoveInjection_WithNoMarker_LeavesDocumentUnchanged()
+    {
+        var clean = "<html><body><div>x</div>\n</body></html>";
+
+        Assert.Equal(clean, WebClientPatchService.RemoveInjection(clean));
+    }
+
+    // UT-004
+    [Fact]
+    public void RemoveInjection_IsIdempotent()
+    {
+        var patched = "<html><body>" + ScriptTag + Marker + "\n</body></html>";
+
+        var once = WebClientPatchService.RemoveInjection(patched);
+        var twice = WebClientPatchService.RemoveInjection(once);
+
+        // Startup calls this unconditionally, so it runs on every boot forever
+        // after the patch is gone.
+        Assert.Equal(once, twice);
+    }
+
+    // UT-005
+    [Fact]
+    public void RemoveInjection_LeavesAnotherPluginsInjectionIntact()
+    {
+        var foreign = "<script defer src=\"/Plugins/Other/Script\"></script><!-- other-overlay -->";
+        var patched = "<html><body>" + foreign + ScriptTag + Marker + "\n</body></html>";
+
+        var cleaned = WebClientPatchService.RemoveInjection(patched);
+
+        // The marker is what makes removal unambiguous. Removing anything we did
+        // not add is the failure this guards: it is another plugin's file too.
+        Assert.Contains(foreign, cleaned, System.StringComparison.Ordinal);
+        Assert.DoesNotContain(Marker, cleaned, System.StringComparison.Ordinal);
+    }
+
+    // UT-006
+    [Fact]
+    public void RemoveInjection_WithUnmarkedLookalikeTag_LeavesItAlone()
+    {
+        // Same script tag, no marker: JRay did not write this, so JRay does not
+        // remove it.
+        var patched = "<html><body>" + ScriptTag + "\n</body></html>";
+
+        Assert.Equal(patched, WebClientPatchService.RemoveInjection(patched));
+    }
+}

Jellyfin.Plugin.JRay.sln

@@ -1,7 +1,9 @@
+
 Microsoft Visual Studio Solution File, Format Version 12.00
-#
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Jellyfin.Plugin.JRay", "Jellyfin.Plugin.JRay\Jellyfin.Plugin.JRay.csproj", "{D921B930-CF91-406F-ACBC-08914DCD0D34}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Jellyfin.Plugin.JRay.Tests", "Jellyfin.Plugin.JRay.Tests\Jellyfin.Plugin.JRay.Tests.csproj", "{104C1021-3155-4404-9CA0-8ED8F310A152}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -24,5 +26,20 @@ Global
 		{D921B930-CF91-406F-ACBC-08914DCD0D34}.Release|x64.Build.0 = Release|Any CPU
 		{D921B930-CF91-406F-ACBC-08914DCD0D34}.Release|x86.ActiveCfg = Release|Any CPU
 		{D921B930-CF91-406F-ACBC-08914DCD0D34}.Release|x86.Build.0 = Release|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Debug|x64.Build.0 = Debug|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Debug|x86.Build.0 = Debug|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Release|Any CPU.Build.0 = Release|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Release|x64.ActiveCfg = Release|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Release|x64.Build.0 = Release|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Release|x86.ActiveCfg = Release|Any CPU
+		{104C1021-3155-4404-9CA0-8ED8F310A152}.Release|x86.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
 	EndGlobalSection
 EndGlobal

Jellyfin.Plugin.JRay/Configuration/ManifestServer.cs

@@ -0,0 +1,129 @@
+namespace Jellyfin.Plugin.JRay.Configuration;
+
+/// <summary>
+/// How far a configured manifest server is trusted. See the JRay public server
+/// specification, §9 "Trusting third-party servers".
+/// </summary>
+public enum ServerTrustLevel
+{
+    /// <summary>
+    /// Accept manifests, but never contribute to this server and never send
+    /// library inventory beyond the single item being queried. The default for
+    /// user-added servers.
+    /// </summary>
+    FetchOnly = 0,
+
+    /// <summary>
+    /// Eligible to contribute to, subject to <see cref="ManifestServer.AllowContribute"/>.
+    /// </summary>
+    Full = 1,
+}
+
+/// <summary>
+/// The minimum cut-match tier a fetched manifest must reach before it is stored.
+/// See the public server specification, §3 "Cut matching".
+/// </summary>
+/// <remarks>
+/// Every tier is a claim about a <em>cut</em>, never about a copy. There is no
+/// file-level tier, and the plugin sends no <c>video_hash</c>.
+/// <para>
+/// <b>The <c>Exact</c> tier was withdrawn for legal reasons; do not re-add it
+/// without an explicit, recorded agreement.</b> It keyed on the OpenSubtitles
+/// file hash, which identifies the individual encode a user holds rather than
+/// the edit the timings describe. A TMDB id discloses "some copy of this film";
+/// a file hash discloses "<em>this exact release</em>", which turns a catalogue
+/// lookup into a release-identification service and turns the server's database
+/// into a mapping from file fingerprints to the instances holding them. That is
+/// a far more specific disclosure than PR-005 permits, and a dataset no
+/// volunteer operator should be holding.
+/// </para>
+/// <para>
+/// The audio signature is the deliberate replacement: derived from content, it
+/// identifies the <em>cut</em>, so two different encodes of the same edit agree.
+/// It answers the question the exchange needs — "do these timings apply to this
+/// media?" — without answering the one it must not. <c>Audio</c> is therefore
+/// the top tier here.
+/// </para>
+/// </remarks>
+public enum MatchTier
+{
+    /// <summary>Audio 0.60–0.85, or runtimes within ±30s. Surfaced as a caveat in the UI.</summary>
+    Loose = 0,
+
+    /// <summary>Runtimes within ±2s.</summary>
+    Runtime = 1,
+
+    /// <summary>Audio signature score ≥ 0.85; may carry a non-zero offset. The top tier.</summary>
+    Audio = 2,
+}
+
+/// <summary>
+/// One entry in the ordered list of manifest servers the plugin queries
+/// (public server specification, §9 "Multiple servers").
+/// </summary>
+/// <remarks>
+/// The list is ordered because order *is* the user's trust ranking, made
+/// explicit: for a fetch, servers are tried in order and the first acceptable
+/// result wins. Querying every server for every item would multiply egress and
+/// leak the library to more parties.
+///
+/// <c>FetchOnly</c> is the default for user-added servers. Adding a third-party
+/// server means trusting its operator not to serve deliberately wrong actor
+/// data — the client-side controls bound the damage to bad overlay content,
+/// they cannot make wrong data right.
+/// </remarks>
+// TRACES: JR-025 | PR-005, PR-006
+public class ManifestServer
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ManifestServer"/> class.
+    /// </summary>
+    public ManifestServer()
+    {
+        Url = string.Empty;
+        Name = string.Empty;
+        Token = string.Empty;
+        Enabled = false;
+        AllowContribute = false;
+        TrustLevel = ServerTrustLevel.FetchOnly;
+    }
+
+    /// <summary>
+    /// Gets or sets the base URL of the server, e.g. "https://jray.tourolle.paris".
+    /// HTTPS is required for non-loopback servers: a plaintext server would let
+    /// any network intermediary rewrite actor overlays.
+    /// </summary>
+    public string Url { get; set; }
+
+    /// <summary>
+    /// Gets or sets the display label shown in the configuration page.
+    /// </summary>
+    public string Name { get; set; }
+
+    /// <summary>
+    /// Gets or sets the API token used to contribute manifests. Optional —
+    /// required only to contribute, never to fetch. This is an anonymous bearer
+    /// capability rather than an account (public server specification, §5a).
+    /// </summary>
+    public string Token { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether this server is queried at all.
+    /// Lets an admin disable an entry without deleting it and losing its token.
+    /// </summary>
+    public bool Enabled { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether locally generated manifests may be
+    /// contributed to this server. Independent of fetching, and off by default:
+    /// contribution is never fanned out, because broadcasting uploads to every
+    /// configured server would multiply privacy exposure without the user
+    /// intending it.
+    /// </summary>
+    public bool AllowContribute { get; set; }
+
+    /// <summary>
+    /// Gets or sets how far this server is trusted.
+    /// </summary>
+    public ServerTrustLevel TrustLevel { get; set; }
+}

Jellyfin.Plugin.JRay/Configuration/PluginConfiguration.cs

@@ -1,3 +1,4 @@
+using System.Collections.ObjectModel;
 using MediaBrowser.Model.Plugins;
 
 namespace Jellyfin.Plugin.JRay.Configuration;
@@ -5,8 +6,28 @@ namespace Jellyfin.Plugin.JRay.Configuration;
 /// <summary>
 /// Plugin configuration.
 /// </summary>
+/// <remarks>
+/// Every manifest-exchange switch here defaults to <b>off</b>, including the
+/// pre-configured community server, so no traffic leaves an installation until
+/// an admin acts. Fetching and contributing each reveal to a server operator
+/// that some instance holds a given title; that is inherent to the exchange, so
+/// the defaults bound the exposure rather than pretending to remove it.
+/// </remarks>
+// TRACES: JR-036, JR-038 | PR-005
 public class PluginConfiguration : BasePluginConfiguration
 {
+    /// <summary>
+    /// The community manifest exchange. Shipped pre-configured but
+    /// <b>disabled</b>, so no traffic leaves an installation until an admin opts
+    /// in (public server specification, §9).
+    /// </summary>
+    public const string CommunityServerUrl = "https://jray.tourolle.paris";
+
+    /// <summary>
+    /// Display name for <see cref="CommunityServerUrl"/>.
+    /// </summary>
+    public const string CommunityServerName = "JRay Community";
+
     /// <summary>
     /// Initializes a new instance of the <see cref="PluginConfiguration"/> class.
     /// </summary>
@@ -15,6 +36,24 @@ public class PluginConfiguration : BasePluginConfiguration
         TruthFileSuffix = ".jray.json";
         CacheDurationMinutes = 60;
         EnableOverlay = true;
+
+        // Manifest sharing is a network egress feature, so every part of it is
+        // off by default (public server specification, §9 "Configuration").
+        EnableManifestSharing = false;
+        ContributeManifests = false;
+        ComputeAudioSignatures = false;
+        MinimumMatchTier = MatchTier.Runtime;
+
+        // Pre-configured but disabled: the admin opts in by enabling it, rather
+        // than by having to discover and type a URL.
+        Servers.Add(new ManifestServer
+        {
+            Url = CommunityServerUrl,
+            Name = CommunityServerName,
+            Enabled = false,
+            AllowContribute = false,
+            TrustLevel = ServerTrustLevel.FetchOnly,
+        });
     }
 
     /// <summary>
@@ -37,4 +76,62 @@ public class PluginConfiguration : BasePluginConfiguration
     /// any previously injected script is removed.
     /// </summary>
     public bool EnableOverlay { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether JRay may fetch actor-timeline
+    /// manifests from the configured servers. Off by default — this is a network
+    /// egress feature and must be opt-in.
+    /// </summary>
+    /// <remarks>
+    /// Fetching reveals to a server operator that some instance holds a given
+    /// title. That is inherent to the exchange, and each configured server
+    /// multiplies the exposure, which the configuration page states plainly.
+    /// </remarks>
+    public bool EnableManifestSharing { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether locally generated manifests may be
+    /// contributed back. A separate opt-in from downloading, and off by default.
+    /// </summary>
+    /// <remarks>
+    /// Contribution additionally requires <see cref="ManifestServer.AllowContribute"/>
+    /// on the specific server and a token for it. Uploads are never fanned out to
+    /// every configured server.
+    /// </remarks>
+    public bool ContributeManifests { get; set; }
+
+    /// <summary>
+    /// Gets or sets the minimum cut-match tier a fetched manifest must reach
+    /// before it is stored.
+    /// </summary>
+    /// <remarks>
+    /// Defaults to <see cref="MatchTier.Runtime"/>. <see cref="MatchTier.Loose"/>
+    /// admits manifests whose runtime differs by up to 30s, which may be a
+    /// different trim of the same cut — usable, but it should be surfaced as a
+    /// caveat rather than applied silently.
+    /// </remarks>
+    public MatchTier MinimumMatchTier { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether the plugin computes audio
+    /// signatures for library items, enabling content-based cut matching and
+    /// identification of files whose providence is unknown.
+    /// </summary>
+    /// <remarks>
+    /// Off by default. Uses the FFmpeg binary Jellyfin already ships (via
+    /// <c>IMediaEncoder.EncoderPath</c>), so there is no extra dependency, but it
+    /// costs roughly a second or two of I/O per item and is therefore opt-in.
+    /// </remarks>
+    public bool ComputeAudioSignatures { get; set; }
+
+    /// <summary>
+    /// Gets the ordered list of manifest servers.
+    /// </summary>
+    /// <remarks>
+    /// Order is the user's trust ranking: for a fetch, servers are tried in order
+    /// and the first result clearing <see cref="MinimumMatchTier"/> wins. For a
+    /// series, first-match applies per <i>episode</i>, so a later server is
+    /// queried only for the episodes earlier ones lacked.
+    /// </remarks>
+    public Collection<ManifestServer> Servers { get; } = new();
 }

Jellyfin.Plugin.JRay/Configuration/configPage.html

@@ -29,16 +29,82 @@
                             <span>Enable pause overlay</span>
                         </label>
                         <div class="fieldDescription">
-                            Injects a small script into the web client that shows on-screen actors
+                            Shows the cast of the current scene when playback is paused. This
-                            when playback is paused. Disabling this removes the injected script.
+                            requires the
+                            <a is="emby-linkbutton" class="button-link" href="https://github.com/IAmParadox27/jellyfin-plugin-file-transformation" target="_blank" rel="noopener">File Transformation</a>
+                            plugin, which rewrites the web client's index.html as it is served.
+                            JRay never modifies index.html on disk, so there is no fallback if
+                            that plugin is absent — only the overlay is affected, and every
+                            other JRay feature keeps working.
                         </div>
                     </div>
+                    <div id="JRayDependencyStatus" class="fieldDescription" style="margin:0 0 1.5em;padding:0.75em 1em;border-radius:0.25em;display:none;"></div>
                     <div>
                         <button is="emby-button" type="submit" class="raised button-submit block emby-button">
                             <span>Save</span>
                         </button>
                     </div>
                 </form>
+
+                <h2 style="margin-top:2em;">Coverage</h2>
+                <p class="fieldDescription">
+                    How much of your library has scene-actor truth data. Ignored items are
+                    excluded from the "to&nbsp;do" total, so blacklisting a genre or series
+                    won't drag your progress down.
+                </p>
+                <div id="JRayCoverageSummary" style="margin-bottom:1em;">Loading…</div>
+                <div id="JRayCoverageBar" style="height:1.25em;border-radius:0.25em;overflow:hidden;background:rgba(127,127,127,0.25);display:flex;margin-bottom:0.5em;"></div>
+                <div id="JRayCoverageLegend" class="fieldDescription" style="margin-bottom:1.5em;"></div>
+
+                <details style="margin-bottom:1.5em;">
+                    <summary style="cursor:pointer;">By media type</summary>
+                    <div id="JRayCoverageByType" style="margin-top:0.5em;"></div>
+                </details>
+                <details style="margin-bottom:1.5em;">
+                    <summary style="cursor:pointer;">By genre</summary>
+                    <div id="JRayCoverageByGenre" style="margin-top:0.5em;"></div>
+                </details>
+
+                <h2 style="margin-top:2em;">Prioritise / ignore rules</h2>
+                <p class="fieldDescription">
+                    Shape the work-discovery API (<code>/Plugins/JRay/Tasks/Pending</code>).
+                    <strong>Ignore</strong> hides matching items from extraction workers;
+                    <strong>Prioritise</strong> pushes them to the front of the queue. A more
+                    specific rule wins (item&nbsp;&gt;&nbsp;series&nbsp;&gt;&nbsp;genre). Setting a
+                    rule for a target that already has one replaces it, so nothing can be both
+                    prioritised and ignored.
+                </p>
+
+                <div style="display:flex;flex-wrap:wrap;gap:0.5em;align-items:flex-end;margin-bottom:1em;">
+                    <div class="selectContainer" style="margin:0;">
+                        <label class="selectLabel" for="JRayRuleScope">Scope</label>
+                        <select id="JRayRuleScope" is="emby-select">
+                            <option value="Genre">Genre</option>
+                            <option value="Series">Series</option>
+                            <option value="Item">Item</option>
+                        </select>
+                    </div>
+                    <div id="JRayItemSearchContainer" class="inputContainer" style="margin:0;flex:1;min-width:14em;display:none;">
+                        <label class="inputLabel inputLabelUnfocused" for="JRayItemSearch">Search title</label>
+                        <input id="JRayItemSearch" type="text" is="emby-input" placeholder="Type a movie or episode name…" />
+                    </div>
+                    <div class="selectContainer" style="margin:0;flex:1;min-width:14em;">
+                        <label class="selectLabel" for="JRayRuleValue">Target</label>
+                        <select id="JRayRuleValue" is="emby-select"></select>
+                    </div>
+                    <div class="selectContainer" style="margin:0;">
+                        <label class="selectLabel" for="JRayRuleAction">Action</label>
+                        <select id="JRayRuleAction" is="emby-select">
+                            <option value="Ignore">Ignore</option>
+                            <option value="Prioritise">Prioritise</option>
+                        </select>
+                    </div>
+                    <button id="JRayAddRule" is="emby-button" type="button" class="raised emby-button">
+                        <span>Add rule</span>
+                    </button>
+                </div>
+
+                <div id="JRayRulesList"></div>
             </div>
         </div>
         <script type="text/javascript">
@@ -46,6 +112,256 @@
                 pluginUniqueId: '96a22d9d-23fd-49bb-8970-5e153817d223'
             };
 
+            function jrayUrl(path) {
+                return ApiClient.getUrl('Plugins/JRay/' + path);
+            }
+
+            function jrayApi(path, method, body) {
+                var opts = {
+                    url: jrayUrl(path),
+                    type: method || 'GET'
+                };
+                if (body !== undefined) {
+                    opts.data = JSON.stringify(body);
+                    opts.contentType = 'application/json';
+                }
+                if (!method || method === 'GET') {
+                    opts.dataType = 'json';
+                }
+                return ApiClient.ajax(opts);
+            }
+
+            function escapeHtml(s) {
+                return String(s == null ? '' : s)
+                    .replace(/&/g, '&amp;').replace(/</g, '&lt;')
+                    .replace(/>/g, '&gt;').replace(/"/g, '&quot;');
+            }
+
+            // ---- Dependency status ----
+            // Jellyfin cannot install a plugin's dependency, so the only thing
+            // that closes the gap is saying so where an admin can act on it.
+            function loadDependencyStatus() {
+                var el = document.querySelector('#JRayDependencyStatus');
+                return jrayApi('Status/Dependencies').then(function (status) {
+                    el.style.display = '';
+                    if (status.file_transformation_available) {
+                        el.style.background = 'rgba(82,168,82,0.15)';
+                        el.innerHTML = '<strong>File Transformation detected.</strong> '
+                            + 'The pause overlay is served by rewriting index.html as it is '
+                            + 'sent, leaving the file on disk untouched.';
+                        return;
+                    }
+
+                    el.style.background = 'rgba(220,160,60,0.18)';
+                    el.innerHTML = '<strong>File Transformation is not installed &mdash; the pause '
+                        + 'overlay is disabled.</strong> Every other JRay feature is unaffected. '
+                        + 'To enable it, add this repository in Dashboard &rarr; Plugins &rarr; '
+                        + 'Repositories, then install "File Transformation" and restart:<br />'
+                        + '<code>' + escapeHtml(status.file_transformation_manifest_url) + '</code>';
+                }).catch(function () {
+                    el.style.display = 'none';
+                });
+            }
+
+            // ---- Coverage ----
+
+            var JRayCoverColors = {
+                covered: '#4caf50',
+                prioritised: '#ff9800',
+                pending: '#9e9e9e',
+                ignored: 'rgba(127,127,127,0.35)'
+            };
+
+            function renderBar(el, counts) {
+                el.innerHTML = '';
+                var order = [
+                    ['covered', counts.covered],
+                    ['prioritised', counts.prioritised],
+                    ['pending', counts.pending - counts.prioritised],
+                    ['ignored', counts.ignored]
+                ];
+                order.forEach(function (seg) {
+                    if (counts.total <= 0 || seg[1] <= 0) { return; }
+                    var d = document.createElement('div');
+                    d.style.background = JRayCoverColors[seg[0]];
+                    d.style.width = (100 * seg[1] / counts.total) + '%';
+                    el.appendChild(d);
+                });
+            }
+
+            function pct(counts) {
+                var denom = counts.total - counts.ignored;
+                if (denom <= 0) { return '—'; }
+                return Math.round(100 * counts.covered / denom) + '%';
+            }
+
+            function renderBreakdown(el, rows) {
+                if (!rows || !rows.length) {
+                    el.textContent = 'Nothing to show.';
+                    return;
+                }
+                var html = '<table style="width:100%;border-collapse:collapse;">' +
+                    '<thead><tr style="text-align:left;">' +
+                    '<th>Name</th><th>Covered</th><th>Pending</th><th>Ignored</th><th>Total</th><th>%</th>' +
+                    '</tr></thead><tbody>';
+                rows.forEach(function (r) {
+                    var c = r.counts;
+                    html += '<tr>' +
+                        '<td>' + escapeHtml(r.label) + '</td>' +
+                        '<td>' + c.covered + '</td>' +
+                        '<td>' + c.pending + (c.prioritised ? ' (' + c.prioritised + ' ★)' : '') + '</td>' +
+                        '<td>' + c.ignored + '</td>' +
+                        '<td>' + c.total + '</td>' +
+                        '<td>' + pct(c) + '</td>' +
+                        '</tr>';
+                });
+                html += '</tbody></table>';
+                el.innerHTML = html;
+            }
+
+            function loadCoverage() {
+                document.querySelector('#JRayCoverageSummary').textContent = 'Loading…';
+                jrayApi('Coverage').then(function (report) {
+                    var t = report.total;
+                    document.querySelector('#JRayCoverageSummary').innerHTML =
+                        '<strong>' + pct(t) + '</strong> covered — ' +
+                        t.covered + ' of ' + (t.total - t.ignored) + ' items processed' +
+                        (t.ignored ? ' (' + t.ignored + ' ignored)' : '') + '.';
+                    renderBar(document.querySelector('#JRayCoverageBar'), t);
+                    document.querySelector('#JRayCoverageLegend').innerHTML =
+                        '<span style="color:' + JRayCoverColors.covered + '">■</span> covered &nbsp; ' +
+                        '<span style="color:' + JRayCoverColors.prioritised + '">■</span> prioritised &nbsp; ' +
+                        '<span style="color:' + JRayCoverColors.pending + '">■</span> pending &nbsp; ' +
+                        '<span>▨</span> ignored';
+                    renderBreakdown(document.querySelector('#JRayCoverageByType'), report.by_media_type);
+                    renderBreakdown(document.querySelector('#JRayCoverageByGenre'), report.by_genre);
+                });
+            }
+
+            // ---- Rules ----
+
+            var JRayOptionCache = { Genre: null, Series: null };
+
+            function loadOptionsFor(scope) {
+                if (JRayOptionCache[scope]) {
+                    return Promise.resolve(JRayOptionCache[scope]);
+                }
+                var path = scope === 'Series' ? 'Coverage/Series' : 'Coverage/Genres';
+                return jrayApi(path).then(function (opts) {
+                    JRayOptionCache[scope] = opts;
+                    return opts;
+                });
+            }
+
+            function fillSelect(select, opts, emptyText) {
+                if (!opts.length) {
+                    select.innerHTML = '<option value="">' + emptyText + '</option>';
+                    return;
+                }
+                select.innerHTML = opts.map(function (o) {
+                    return '<option value="' + escapeHtml(o.value) + '">' + escapeHtml(o.label) + '</option>';
+                }).join('');
+            }
+
+            function populateValueSelect() {
+                var scope = document.querySelector('#JRayRuleScope').value;
+                var select = document.querySelector('#JRayRuleValue');
+                var isItem = scope === 'Item';
+                document.querySelector('#JRayItemSearchContainer').style.display = isItem ? '' : 'none';
+
+                if (isItem) {
+                    // The target dropdown is filled from a live search instead of a full list.
+                    select.innerHTML = '<option value="">Type a title to search…</option>';
+                    return;
+                }
+
+                select.innerHTML = '<option value="">Loading…</option>';
+                loadOptionsFor(scope).then(function (opts) {
+                    fillSelect(select, opts, '(none found)');
+                });
+            }
+
+            var JRayItemSearchTimer = null;
+            function onItemSearch() {
+                var term = document.querySelector('#JRayItemSearch').value.trim();
+                var select = document.querySelector('#JRayRuleValue');
+                clearTimeout(JRayItemSearchTimer);
+                if (!term) {
+                    select.innerHTML = '<option value="">Type a title to search…</option>';
+                    return;
+                }
+                select.innerHTML = '<option value="">Searching…</option>';
+                JRayItemSearchTimer = setTimeout(function () {
+                    jrayApi('Coverage/Items?search=' + encodeURIComponent(term)).then(function (opts) {
+                        fillSelect(select, opts, '(no matches)');
+                    });
+                }, 300);
+            }
+
+            function labelForRule(rule) {
+                if (rule.label) { return rule.label; }
+                var cache = JRayOptionCache[rule.scope];
+                if (cache) {
+                    var hit = cache.filter(function (o) { return o.value === rule.value; })[0];
+                    if (hit) { return hit.label; }
+                }
+                return rule.value;
+            }
+
+            function loadRules() {
+                jrayApi('Policy/Rules').then(function (rules) {
+                    var el = document.querySelector('#JRayRulesList');
+                    if (!rules.length) {
+                        el.innerHTML = '<p class="fieldDescription">No rules yet.</p>';
+                        return;
+                    }
+                    var html = '<table style="width:100%;border-collapse:collapse;">' +
+                        '<thead><tr style="text-align:left;"><th>Action</th><th>Scope</th><th>Target</th><th></th></tr></thead><tbody>';
+                    rules.forEach(function (r) {
+                        var badge = r.action === 'Prioritise'
+                            ? '<span style="color:' + JRayCoverColors.prioritised + '">★ Prioritise</span>'
+                            : '<span>⦸ Ignore</span>';
+                        html += '<tr>' +
+                            '<td>' + badge + '</td>' +
+                            '<td>' + escapeHtml(r.scope) + '</td>' +
+                            '<td>' + escapeHtml(labelForRule(r)) + '</td>' +
+                            '<td><button is="emby-button" type="button" class="emby-button jray-del" ' +
+                            'data-scope="' + escapeHtml(r.scope) + '" data-value="' + escapeHtml(r.value) + '">Remove</button></td>' +
+                            '</tr>';
+                    });
+                    html += '</tbody></table>';
+                    el.innerHTML = html;
+
+                    Array.prototype.forEach.call(el.querySelectorAll('.jray-del'), function (btn) {
+                        btn.addEventListener('click', function () {
+                            var q = 'Policy/Rules?scope=' + encodeURIComponent(btn.getAttribute('data-scope')) +
+                                '&value=' + encodeURIComponent(btn.getAttribute('data-value'));
+                            jrayApi(q, 'DELETE').then(function () {
+                                loadRules();
+                                loadCoverage();
+                            });
+                        });
+                    });
+                });
+            }
+
+            function addRule() {
+                var scope = document.querySelector('#JRayRuleScope').value;
+                var valueSelect = document.querySelector('#JRayRuleValue');
+                var value = valueSelect.value;
+                if (!value) { return; }
+                var rule = {
+                    scope: scope,
+                    value: value,
+                    action: document.querySelector('#JRayRuleAction').value,
+                    label: valueSelect.options[valueSelect.selectedIndex].text
+                };
+                jrayApi('Policy/Rules', 'PUT', rule).then(function () {
+                    loadRules();
+                    loadCoverage();
+                });
+            }
+
             document.querySelector('#JRayConfigPage')
                 .addEventListener('pageshow', function() {
                     Dashboard.showLoadingMsg();
@@ -55,8 +371,17 @@
                         document.querySelector('#EnableOverlay').checked = config.EnableOverlay;
                         Dashboard.hideLoadingMsg();
                     });
+
+                    loadDependencyStatus();
+                    populateValueSelect();
+                    loadRules();
+                    loadCoverage();
                 });
 
+            document.querySelector('#JRayRuleScope').addEventListener('change', populateValueSelect);
+            document.querySelector('#JRayItemSearch').addEventListener('input', onItemSearch);
+            document.querySelector('#JRayAddRule').addEventListener('click', addRule);
+
             document.querySelector('#JRayConfigForm')
                 .addEventListener('submit', function(e) {
                 Dashboard.showLoadingMsg();

Jellyfin.Plugin.JRay/Controllers/ActorsController.cs

@@ -1,8 +1,8 @@
 using System;
-using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
 using Jellyfin.Plugin.JRay.Services.Interfaces;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
@@ -11,12 +11,19 @@ using Microsoft.AspNetCore.Mvc;
 namespace Jellyfin.Plugin.JRay.Controllers;
 
 /// <summary>
-/// Exposes scene-actor-extraction "truth" data: which actors are on screen
+/// Exposes scene-actor-extraction "truth" data: which actors are present in
-/// at a given timestamp in a movie.
+/// the scene at a given timestamp.
 /// </summary>
+/// <remarks>
+/// Presence is <b>scene-scoped</b>, not instantaneous: a window is a claim about
+/// scene membership, not a recognition event, so an actor who is off-camera
+/// during a reverse shot is still present. Windows are served exactly as stored
+/// — never merged, split or trimmed.
+/// </remarks>
 [ApiController]
 [Route("Plugins/JRay/Items/{itemId}")]
 [Authorize]
+// TRACES: JR-004, JR-005, JR-010, JR-012, JR-013, JR-014 | SR-002
 public class ActorsController : ControllerBase
 {
     private readonly ITruthDataService _truthDataService;
@@ -31,7 +38,7 @@ public class ActorsController : ControllerBase
     }
 
     /// <summary>
-    /// Gets the full actor timeline (every actor with their on-screen scene windows) for a movie.
+    /// Gets the full actor timeline (every actor with their scene-presence windows) for a movie.
     /// </summary>
     /// <param name="itemId">The Jellyfin item id.</param>
     /// <param name="cancellationToken">Cancellation token.</param>
@@ -51,7 +58,26 @@ public class ActorsController : ControllerBase
     }
 
     /// <summary>
-    /// Gets the JRay context (currently: on-screen actors) at a given timestamp.
+    /// Gets how this item's truth data was obtained.
+    /// </summary>
+    /// <remarks>
+    /// Separate from <c>Timeline</c> on purpose: provenance is metadata *about*
+    /// the claim, and folding it into the truth file would mean the bytes served
+    /// back are not the bytes the producer wrote (JR-004).
+    /// </remarks>
+    /// <param name="itemId">The Jellyfin item id.</param>
+    /// <returns>The provenance, or 404 if no truth data exists for this item.</returns>
+    [HttpGet("Provenance")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public ActionResult<TruthProvenance> GetProvenance(Guid itemId)
+    {
+        var provenance = _truthDataService.GetProvenance(itemId);
+        return provenance is null ? NotFound() : Ok(provenance);
+    }
+
+    /// <summary>
+    /// Gets the JRay context (currently: the actors in the scene) at a given timestamp.
     /// This is an extensible envelope — future fields (locations, trivia, etc.)
     /// will be added here without changing the route.
     /// </summary>
@@ -71,9 +97,9 @@ public class ActorsController : ControllerBase
         }
 
         var context = new JRayContext();
-        foreach (var actor in truth.Actors.Where(actor => actor.Scenes.Any(scene => scene.Length == 2 && scene[0] <= t && t <= scene[1])))
+        foreach (var actor in PresenceLookup.ActorsPresentAt(truth, t))
         {
-            context.Actors.Add(new ActorAtTime
+            context.Actors.Add(new ActorInScene
             {
                 Name = actor.Name,
                 ImdbId = actor.ImdbId,

Jellyfin.Plugin.JRay/Controllers/CoverageController.cs

@@ -0,0 +1,234 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Jellyfin.Data.Enums;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
+using Jellyfin.Plugin.JRay.Services.Interfaces;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.TV;
+using MediaBrowser.Controller.Library;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Jellyfin.Plugin.JRay.Controllers;
+
+/// <summary>
+/// Reports how much of the library has truth data (overall, by media type, and
+/// by genre), and supplies the genre/series option lists the config page's
+/// rule editor needs.
+/// </summary>
+/// <remarks>
+/// Percent done is <c>covered / (total - ignored)</c>: ignored items are
+/// intentionally out of scope, so excluding a genre must not drag the figure
+/// down as though it were outstanding work.
+/// </remarks>
+[ApiController]
+[Route("Plugins/JRay/Coverage")]
+[Authorize(Roles = "Administrator")]
+// TRACES: JR-018, JR-019 | PR-003
+public class CoverageController : ControllerBase
+{
+    private readonly ILibraryManager _libraryManager;
+    private readonly ITruthDataService _truthDataService;
+    private readonly IMediaPolicyStore _policyStore;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="CoverageController"/> class.
+    /// </summary>
+    /// <param name="libraryManager">The Jellyfin library manager.</param>
+    /// <param name="truthDataService">The truth data service.</param>
+    /// <param name="policyStore">The media policy store.</param>
+    public CoverageController(ILibraryManager libraryManager, ITruthDataService truthDataService, IMediaPolicyStore policyStore)
+    {
+        _libraryManager = libraryManager;
+        _truthDataService = truthDataService;
+        _policyStore = policyStore;
+    }
+
+    /// <summary>
+    /// Gets the coverage report: totals plus breakdowns by media type and by genre.
+    /// </summary>
+    /// <returns>The coverage report.</returns>
+    [HttpGet]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    public ActionResult<CoverageReport> GetCoverage()
+    {
+        var rules = _policyStore.GetRules();
+
+        var items = _libraryManager.GetItemList(new InternalItemsQuery
+        {
+            IncludeItemTypes = new[] { BaseItemKind.Movie, BaseItemKind.Episode },
+            IsVirtualItem = false,
+            Recursive = true,
+        });
+
+        var report = new CoverageReport();
+        var byMediaType = new Dictionary<string, CoverageCounts>(StringComparer.Ordinal);
+        var byGenre = new Dictionary<string, CoverageCounts>(StringComparer.OrdinalIgnoreCase);
+
+        foreach (var item in items)
+        {
+            if (!TasksController.MediaFileExists(item))
+            {
+                continue;
+            }
+
+            var covered = _truthDataService.HasTruth(item.Id, item.Path);
+            var action = PolicyResolver.Resolve(rules, item.Id, TasksController.GetSeriesId(item), item.Genres);
+
+            Accumulate(report.Total, covered, action);
+            Accumulate(GetBucket(byMediaType, MediaTypeLabel(item)), covered, action);
+
+            foreach (var genre in item.Genres)
+            {
+                if (!string.IsNullOrWhiteSpace(genre))
+                {
+                    Accumulate(GetBucket(byGenre, genre), covered, action);
+                }
+            }
+        }
+
+        foreach (var kvp in byMediaType.OrderBy(k => k.Key, StringComparer.Ordinal))
+        {
+            report.ByMediaType.Add(new CoverageBreakdownRow { Label = kvp.Key, Counts = kvp.Value });
+        }
+
+        foreach (var kvp in byGenre.OrderBy(k => k.Key, StringComparer.OrdinalIgnoreCase))
+        {
+            report.ByGenre.Add(new CoverageBreakdownRow { Label = kvp.Key, Counts = kvp.Value });
+        }
+
+        return Ok(report);
+    }
+
+    /// <summary>
+    /// Gets the distinct genres present on movies/episodes, for the rule editor.
+    /// </summary>
+    /// <returns>Genre options, sorted by name.</returns>
+    [HttpGet("Genres")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    public ActionResult<IEnumerable<PickerOption>> GetGenres()
+    {
+        var items = _libraryManager.GetItemList(new InternalItemsQuery
+        {
+            IncludeItemTypes = new[] { BaseItemKind.Movie, BaseItemKind.Episode },
+            IsVirtualItem = false,
+            Recursive = true,
+        });
+
+        var genres = items
+            .SelectMany(item => item.Genres)
+            .Where(g => !string.IsNullOrWhiteSpace(g))
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .OrderBy(g => g, StringComparer.OrdinalIgnoreCase)
+            .Select(g => new PickerOption { Value = g, Label = g });
+
+        return Ok(genres);
+    }
+
+    /// <summary>
+    /// Gets the series in the library, for the rule editor's series picker.
+    /// </summary>
+    /// <returns>Series options (id + title), sorted by title.</returns>
+    [HttpGet("Series")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    public ActionResult<IEnumerable<PickerOption>> GetSeries()
+    {
+        var series = _libraryManager.GetItemList(new InternalItemsQuery
+        {
+            IncludeItemTypes = new[] { BaseItemKind.Series },
+            IsVirtualItem = false,
+            Recursive = true,
+        });
+
+        var options = series
+            .OrderBy(s => s.Name, StringComparer.OrdinalIgnoreCase)
+            .Select(s => new PickerOption { Value = s.Id.ToString("D"), Label = s.Name });
+
+        return Ok(options);
+    }
+
+    /// <summary>
+    /// Searches movies/episodes by name, for the rule editor's item picker.
+    /// </summary>
+    /// <param name="search">A name fragment to match (case-insensitive). Required.</param>
+    /// <param name="limit">The maximum number of results (default 25, max 100).</param>
+    /// <returns>Matching item options (id + name), sorted by name.</returns>
+    [HttpGet("Items")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    public ActionResult<IEnumerable<PickerOption>> SearchItems([FromQuery] string? search, [FromQuery] int limit = 25)
+    {
+        if (string.IsNullOrWhiteSpace(search))
+        {
+            return Ok(Array.Empty<PickerOption>());
+        }
+
+        var items = _libraryManager.GetItemList(new InternalItemsQuery
+        {
+            IncludeItemTypes = new[] { BaseItemKind.Movie, BaseItemKind.Episode },
+            IsVirtualItem = false,
+            Recursive = true,
+            SearchTerm = search,
+            Limit = Math.Clamp(limit, 1, 100),
+        });
+
+        var options = items
+            .OrderBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+            .Select(i => new PickerOption { Value = i.Id.ToString("D"), Label = ItemLabel(i) });
+
+        return Ok(options);
+    }
+
+    private static string ItemLabel(BaseItem item)
+    {
+        // Give episodes a series-qualified label so identically-named episodes
+        // (e.g. "Pilot") are distinguishable in the picker.
+        if (item is Episode episode && !string.IsNullOrEmpty(episode.SeriesName))
+        {
+            return episode.SeriesName + " — " + item.Name;
+        }
+
+        return item.Name;
+    }
+
+    private static void Accumulate(CoverageCounts counts, bool covered, PolicyAction? action)
+    {
+        counts.Total++;
+
+        if (action == PolicyAction.Ignore)
+        {
+            counts.Ignored++;
+            return;
+        }
+
+        if (covered)
+        {
+            counts.Covered++;
+            return;
+        }
+
+        counts.Pending++;
+        if (action == PolicyAction.Prioritise)
+        {
+            counts.Prioritised++;
+        }
+    }
+
+    private static CoverageCounts GetBucket(Dictionary<string, CoverageCounts> buckets, string key)
+    {
+        if (!buckets.TryGetValue(key, out var counts))
+        {
+            counts = new CoverageCounts();
+            buckets[key] = counts;
+        }
+
+        return counts;
+    }
+
+    private static string MediaTypeLabel(BaseItem item)
+    {
+        return item.GetBaseItemKind() == BaseItemKind.Episode ? "TV" : "Film";
+    }
+}

Jellyfin.Plugin.JRay/Controllers/ManifestController.cs

@@ -0,0 +1,200 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Jellyfin.Plugin.JRay.Configuration;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
+using Jellyfin.Plugin.JRay.Services.Interfaces;
+using MediaBrowser.Common.Api;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.TV;
+using MediaBrowser.Controller.Library;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+
+namespace Jellyfin.Plugin.JRay.Controllers;
+
+/// <summary>
+/// Fetches actor-timeline manifests from the configured public servers.
+/// </summary>
+// TRACES: JR-025, JR-031 | PR-006
+[ApiController]
+[Authorize(Policy = Policies.RequiresElevation)]
+[Route("Plugins/JRay")]
+[Produces("application/json")]
+public class ManifestController : ControllerBase
+{
+    private readonly ILibraryManager _libraryManager;
+    private readonly IManifestExchangeClient _exchange;
+    private readonly IManagedTruthStore _truthStore;
+    private readonly ILogger<ManifestController> _logger;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ManifestController"/> class.
+    /// </summary>
+    /// <param name="libraryManager">Library manager.</param>
+    /// <param name="exchange">Manifest exchange client.</param>
+    /// <param name="truthStore">Managed truth store.</param>
+    /// <param name="logger">Logger.</param>
+    public ManifestController(
+        ILibraryManager libraryManager,
+        IManifestExchangeClient exchange,
+        IManagedTruthStore truthStore,
+        ILogger<ManifestController> logger)
+    {
+        _libraryManager = libraryManager;
+        _exchange = exchange;
+        _truthStore = truthStore;
+        _logger = logger;
+    }
+
+    /// <summary>
+    /// Resolves an item across the configured servers and stores the first
+    /// acceptable manifest.
+    /// </summary>
+    /// <param name="itemId">The library item id.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>What was fetched, and from where.</returns>
+    /// <response code="200">A manifest was stored.</response>
+    /// <response code="404">The item does not exist, or no server had a manifest for it.</response>
+    /// <response code="409">Manifest sharing is disabled in the plugin configuration.</response>
+    [HttpPost("Items/{itemId}/Fetch")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<ManifestFetchResult>> FetchItem(
+        [FromRoute] Guid itemId,
+        CancellationToken cancellationToken)
+    {
+        var config = Plugin.Instance?.Configuration;
+        if (config is null || !config.EnableManifestSharing)
+        {
+            // Off by default and opt-in: this is a network egress feature, so it
+            // never runs merely because an endpoint was called.
+            return Conflict(new { error = "manifest sharing is disabled" });
+        }
+
+        var item = _libraryManager.GetItemById(itemId);
+        if (item is null)
+        {
+            return NotFound();
+        }
+
+        var query = BuildQuery(item);
+        if (query is null)
+        {
+            return NotFound(new { error = "item has no TMDB or IMDB id to look up" });
+        }
+
+        var servers = config.Servers.ToList();
+        var outcome = item is Episode
+            ? await _exchange.FetchEpisodeAsync(servers, config.MinimumMatchTier, query, cancellationToken)
+                .ConfigureAwait(false)
+            : await _exchange.FetchMovieAsync(servers, config.MinimumMatchTier, query, cancellationToken)
+                .ConfigureAwait(false);
+
+        if (outcome?.Manifest is null)
+        {
+            return NotFound(new { error = "no configured server had an acceptable manifest" });
+        }
+
+        // The offset is applied here, once, so the stored truth is always in the
+        // local file's own timebase and no reader needs offset awareness.
+        var truth = ManifestConverter.ToTruthFile(outcome.Manifest, outcome.OffsetSec, item.Path ?? string.Empty);
+        var provenance = new TruthProvenance
+        {
+            Source = TruthSource.Fetched,
+            ServerUrl = outcome.ServerUrl,
+            MatchTier = outcome.Tier,
+            OffsetSec = outcome.OffsetSec,
+            Caveat = ManifestConverter.DescribeCaveat(outcome.Tier, outcome.OffsetSec),
+            RecordedAt = DateTime.UtcNow,
+        };
+
+        await _truthStore.SaveAsync(itemId, truth, provenance, cancellationToken).ConfigureAwait(false);
+
+        _logger.LogInformation(
+            "Stored manifest for {ItemId} from {Server} at tier {Tier} (offset {Offset}s)",
+            itemId,
+            outcome.ServerUrl,
+            outcome.Tier,
+            outcome.OffsetSec);
+
+        return Ok(new ManifestFetchResult
+        {
+            ServerUrl = outcome.ServerUrl,
+            Match = outcome.Tier.ToString().ToLowerInvariant(),
+            OffsetSec = outcome.OffsetSec,
+            ActorCount = truth.Actors.Count,
+            Caveat = ManifestConverter.DescribeCaveat(outcome.Tier, outcome.OffsetSec),
+        });
+    }
+
+    /// <summary>
+    /// Per-server reachability and last error, for the configuration page.
+    /// </summary>
+    /// <returns>One entry per configured server, in configured order.</returns>
+    /// <response code="200">Status for each configured server.</response>
+    [HttpGet("Servers/Status")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    public ActionResult<IReadOnlyList<ServerStatus>> GetServerStatus()
+    {
+        var config = Plugin.Instance?.Configuration;
+        if (config is null)
+        {
+            return Ok(Array.Empty<ServerStatus>());
+        }
+
+        return Ok(_exchange.GetStatus(config.Servers.ToList()));
+    }
+
+    /// <summary>
+    /// Reads a provider id from an item, or null when it is absent.
+    /// </summary>
+    private static string? ProviderId(BaseItem? item, string provider) =>
+        item?.ProviderIds is { } ids && ids.TryGetValue(provider, out var value)
+            && !string.IsNullOrWhiteSpace(value)
+                ? value
+                : null;
+
+    /// <summary>
+    /// Builds the lookup query from an item's provider ids and measured runtime.
+    /// </summary>
+    private static TitleQuery? BuildQuery(BaseItem item)
+    {
+        var runtimeSec = item.RunTimeTicks.HasValue
+            ? TimeSpan.FromTicks(item.RunTimeTicks.Value).TotalSeconds
+            : (double?)null;
+
+        if (item is Episode episode)
+        {
+            var series = episode.Series;
+            var seriesTmdb = ProviderId(series, "Tmdb");
+            if (string.IsNullOrEmpty(seriesTmdb))
+            {
+                return null;
+            }
+
+            return new TitleQuery
+            {
+                SeriesTmdbId = seriesTmdb,
+                Season = episode.ParentIndexNumber,
+                Episode = episode.IndexNumber,
+                RuntimeSec = runtimeSec,
+            };
+        }
+
+        var tmdb = ProviderId(item, "Tmdb");
+        var imdb = ProviderId(item, "Imdb");
+        if (string.IsNullOrEmpty(tmdb) && string.IsNullOrEmpty(imdb))
+        {
+            return null;
+        }
+
+        return new TitleQuery { TmdbId = tmdb, ImdbId = imdb, RuntimeSec = runtimeSec };
+    }
+}

Jellyfin.Plugin.JRay/Controllers/PolicyController.cs

@@ -0,0 +1,82 @@
+using System.Collections.Generic;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services.Interfaces;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Jellyfin.Plugin.JRay.Controllers;
+
+/// <summary>
+/// Manages the prioritise/ignore rules that shape the work-discovery API
+/// (<c>GET /Plugins/JRay/Tasks/Pending</c>). Rules can target a genre, a
+/// series, or a single item; setting a rule for a target that already has one
+/// replaces it, so a target can never be both prioritised and ignored.
+/// </summary>
+/// <remarks>
+/// Rules steer work discovery only. They never reach the read endpoints or the
+/// overlay, because a rule says "don't spend compute here", not "pretend this
+/// item does not exist".
+/// </remarks>
+[ApiController]
+[Route("Plugins/JRay/Policy")]
+[Authorize(Roles = "Administrator")]
+// TRACES: JR-016, JR-014 | PR-003
+public class PolicyController : ControllerBase
+{
+    private readonly IMediaPolicyStore _policyStore;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PolicyController"/> class.
+    /// </summary>
+    /// <param name="policyStore">The media policy store.</param>
+    public PolicyController(IMediaPolicyStore policyStore)
+    {
+        _policyStore = policyStore;
+    }
+
+    /// <summary>
+    /// Gets all configured prioritise/ignore rules.
+    /// </summary>
+    /// <returns>The current rules.</returns>
+    [HttpGet("Rules")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    public ActionResult<IReadOnlyList<MediaPolicyRule>> GetRules()
+    {
+        return Ok(_policyStore.GetRules());
+    }
+
+    /// <summary>
+    /// Adds or replaces a rule. If a rule already exists for the same scope
+    /// and value, its action is updated.
+    /// </summary>
+    /// <param name="rule">The rule to set.</param>
+    /// <returns>204 on success, or 400 if the rule has no value.</returns>
+    [HttpPut("Rules")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    public IActionResult SetRule([FromBody] MediaPolicyRule rule)
+    {
+        if (rule is null || string.IsNullOrWhiteSpace(rule.Value))
+        {
+            return BadRequest("A rule must have a non-empty value.");
+        }
+
+        _policyStore.SetRule(rule);
+        return NoContent();
+    }
+
+    /// <summary>
+    /// Removes the rule matching the given scope and value.
+    /// </summary>
+    /// <param name="scope">The scope of the rule to remove.</param>
+    /// <param name="value">The value of the rule to remove.</param>
+    /// <returns>204 whether or not a matching rule existed.</returns>
+    [HttpDelete("Rules")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    public IActionResult RemoveRule([FromQuery] PolicyScope scope, [FromQuery] string value)
+    {
+        _policyStore.RemoveRule(scope, value ?? string.Empty);
+        return NoContent();
+    }
+}

Jellyfin.Plugin.JRay/Controllers/StatusController.cs

@@ -0,0 +1,38 @@
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Jellyfin.Plugin.JRay.Controllers;
+
+/// <summary>
+/// Reports whether JRay's hard dependency on the File Transformation plugin is
+/// satisfied, for the configuration page to surface.
+/// </summary>
+/// <remarks>
+/// Absent that plugin the pause overlay is disabled and every other JRay feature
+/// continues to work — so this is a status to display, not an error to raise.
+/// </remarks>
+[ApiController]
+[Route("Plugins/JRay/Status")]
+[Authorize(Roles = "Administrator")]
+// TRACES: JR-023 | PR-004
+public class StatusController : ControllerBase
+{
+    /// <summary>
+    /// Gets the dependency status.
+    /// </summary>
+    /// <returns>The dependency status.</returns>
+    [HttpGet("Dependencies")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    public ActionResult<DependencyStatus> GetDependencies()
+    {
+        return Ok(new DependencyStatus
+        {
+            FileTransformationAvailable = Plugin.FileTransformationAvailable,
+            OverlayEnabled = Plugin.OverlayEnabled,
+            FileTransformationManifestUrl = FileTransformationRegistration.ManifestUrl,
+        });
+    }
+}

Jellyfin.Plugin.JRay/Controllers/TasksController.cs

@@ -1,10 +1,13 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using Jellyfin.Data.Enums;
 using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services;
 using Jellyfin.Plugin.JRay.Services.Interfaces;
 using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
@@ -16,9 +19,19 @@ namespace Jellyfin.Plugin.JRay.Controllers;
 /// Lets a remote extraction worker discover which library items still need
 /// to be processed.
 /// </summary>
+/// <remarks>
+/// The sample is random so that repeated polling spreads work across the
+/// backlog without the server tracking who holds what, and so two workers
+/// polling concurrently mostly do not collide.
+///
+/// Prioritise/ignore rules are applied <b>here and only here</b> (JR-017):
+/// they express "don't spend compute on this", not "pretend this does not
+/// exist", so they never reach the read endpoints or the overlay.
+/// </remarks>
 [ApiController]
 [Route("Plugins/JRay/Tasks")]
 [Authorize(Roles = "Administrator")]
+// TRACES: JR-015, JR-017 | PR-003
 public class TasksController : ControllerBase
 {
     private const int DefaultLimit = 10;
@@ -26,16 +39,19 @@ public class TasksController : ControllerBase
 
     private readonly ILibraryManager _libraryManager;
     private readonly ITruthDataService _truthDataService;
+    private readonly IMediaPolicyStore _policyStore;
 
     /// <summary>
     /// Initializes a new instance of the <see cref="TasksController"/> class.
     /// </summary>
     /// <param name="libraryManager">The Jellyfin library manager.</param>
     /// <param name="truthDataService">The truth data service.</param>
-    public TasksController(ILibraryManager libraryManager, ITruthDataService truthDataService)
+    /// <param name="policyStore">The prioritise/ignore policy store.</param>
+    public TasksController(ILibraryManager libraryManager, ITruthDataService truthDataService, IMediaPolicyStore policyStore)
     {
         _libraryManager = libraryManager;
         _truthDataService = truthDataService;
+        _policyStore = policyStore;
     }
 
     /// <summary>
@@ -48,6 +64,7 @@ public class TasksController : ControllerBase
     public ActionResult<IEnumerable<PendingExtractionItem>> GetPending([FromQuery] int limit = DefaultLimit)
     {
         var effectiveLimit = Math.Clamp(limit, 1, MaxLimit);
+        var rules = _policyStore.GetRules();
 
         var items = _libraryManager.GetItemList(new InternalItemsQuery
         {
@@ -56,17 +73,69 @@ public class TasksController : ControllerBase
             Recursive = true,
         });
 
+        // Keep only items that still need truth data, then apply the policy:
+        // drop anything ignored, and order prioritised items ahead of the rest.
+        // Randomise within each tier so the backlog still spreads across workers.
         var pending = items
-            .Where(item => !string.IsNullOrEmpty(item.Path) && !_truthDataService.HasTruth(item.Id, item.Path))
+            .Where(item => MediaFileExists(item) && !_truthDataService.HasTruth(item.Id, item.Path))
-            .OrderBy(_ => Random.Shared.Next())
+            .Select(item => new
-            .Take(effectiveLimit)
-            .Select(item => new PendingExtractionItem
             {
-                ItemId = item.Id,
+                Item = item,
-                Path = item.Path,
+                Action = PolicyResolver.Resolve(rules, item.Id, GetSeriesId(item), item.Genres)
-                Name = item.Name
+            })
+            .Where(x => x.Action != PolicyAction.Ignore)
+            .OrderByDescending(x => x.Action == PolicyAction.Prioritise)
+            .ThenBy(_ => Random.Shared.Next())
+            .Take(effectiveLimit)
+            .Select(x => new PendingExtractionItem
+            {
+                ItemId = x.Item.Id,
+                Path = x.Item.Path,
+                Name = x.Item.Name
             });
 
         return Ok(pending);
     }
+
+    /// <summary>
+    /// Gets the series id for an episode, or <see cref="Guid.Empty"/> for any
+    /// other item type (so series rules only ever match episodes).
+    /// </summary>
+    /// <param name="item">The library item.</param>
+    /// <returns>The owning series id, or empty.</returns>
+    internal static Guid GetSeriesId(BaseItem item)
+    {
+        return item is Episode episode ? episode.SeriesId : Guid.Empty;
+    }
+
+    /// <summary>
+    /// Determines whether an item's backing media still exists on disk.
+    /// <para>
+    /// A library item can outlive its file: deleting media from disk does not
+    /// always purge the Jellyfin database entry, and such ghosts keep
+    /// <c>IsVirtualItem == false</c>, so filtering on that flag alone is not
+    /// enough. Without this check the pending endpoint hands stale paths/URLs to
+    /// extraction workers, and — because a missing file can never gain truth
+    /// data — those items stay pending forever.
+    /// </para>
+    /// Only local (file-protocol) items are stat-checked; remote/streamed items
+    /// are assumed present so we never stat something off-box.
+    /// </summary>
+    /// <param name="item">The library item.</param>
+    /// <returns><c>true</c> if the item has usable backing media; otherwise <c>false</c>.</returns>
+    internal static bool MediaFileExists(BaseItem item)
+    {
+        if (string.IsNullOrEmpty(item.Path))
+        {
+            return false;
+        }
+
+        if (!item.IsFileProtocol)
+        {
+            return true;
+        }
+
+        // Path may point at a file or, for folder-based media, a directory.
+        return System.IO.File.Exists(item.Path) || Directory.Exists(item.Path);
+    }
 }

Jellyfin.Plugin.JRay/Controllers/TruthController.cs

@@ -12,11 +12,18 @@ namespace Jellyfin.Plugin.JRay.Controllers;
 /// <summary>
 /// Accepts scene-actor-extraction "truth" data pushed directly by a remote
 /// extraction worker, for servers that cannot run the extraction pipeline
-/// locally. See SPEC.md.
+/// locally. See SPEC.md §2.
 /// </summary>
+/// <remarks>
+/// The <c>schema_version</c> check here refuses an unrecognised version rather
+/// than guessing at its shape. It is currently the only source that checks —
+/// sidecar reads do not — which JR-003 requires be fixed by moving the check
+/// into the shared read path.
+/// </remarks>
 [ApiController]
 [Route("Plugins/JRay/Items/{itemId}/Truth")]
 [Authorize(Roles = "Administrator")]
+// TRACES: JR-003, JR-009, JR-014 | SR-003
 public class TruthController : ControllerBase
 {
     private const int SupportedSchemaVersion = 1;
@@ -52,7 +59,8 @@ public class TruthController : ControllerBase
             return BadRequest($"Unsupported schema_version {truth.SchemaVersion}; expected {SupportedSchemaVersion}.");
         }
 
-        await _managedTruthStore.SaveAsync(itemId, truth, cancellationToken).ConfigureAwait(false);
+        var provenance = TruthProvenance.Local(TruthSource.Pushed, DateTime.UtcNow);
+        await _managedTruthStore.SaveAsync(itemId, truth, provenance, cancellationToken).ConfigureAwait(false);
         _truthDataService.Invalidate(itemId);
 
         return NoContent();

Jellyfin.Plugin.JRay/Controllers/WebController.cs

@@ -11,9 +11,14 @@ namespace Jellyfin.Plugin.JRay.Controllers;
 /// Serves static client-side assets for JRay, e.g. the pause-overlay script
 /// injected into the web client.
 /// </summary>
+/// <remarks>
+/// Anonymous by necessity, not by oversight: the script tag is injected into
+/// <c>index.html</c>, which is served before a user has logged in.
+/// </remarks>
 [ApiController]
 [Route("Plugins/JRay")]
 [AllowAnonymous]
+// TRACES: JR-014, JR-020 | PR-001
 public class WebController : ControllerBase
 {
     private const string OverlayScriptResource = "Jellyfin.Plugin.JRay.Web.jray-overlay.js";

Jellyfin.Plugin.JRay/Jellyfin.Plugin.JRay.csproj

@@ -11,10 +11,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Jellyfin.Controller" Version="10.9.11" >
+    <PackageReference Include="Jellyfin.Controller" Version="10.11.5" >
       <ExcludeAssets>runtime</ExcludeAssets>
     </PackageReference>
-    <PackageReference Include="Jellyfin.Model" Version="10.9.11">
+    <PackageReference Include="Jellyfin.Model" Version="10.11.5">
       <ExcludeAssets>runtime</ExcludeAssets>
     </PackageReference>
   </ItemGroup>
@@ -25,6 +25,15 @@
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 
+  <ItemGroup>
+    <!-- Lets the test project reach internals such as
+         WebClientPatchService.RemoveInjection, which is factored out precisely
+         so the removal logic is testable without touching a filesystem. -->
+    <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
+      <_Parameter1>Jellyfin.Plugin.JRay.Tests</_Parameter1>
+    </AssemblyAttribute>
+  </ItemGroup>
+
   <ItemGroup>
     <None Remove="Configuration\configPage.html" />
     <EmbeddedResource Include="Configuration\configPage.html" />

Jellyfin.Plugin.JRay/Models/ActorInScene.cs

@@ -3,9 +3,17 @@ using System.Text.Json.Serialization;
 namespace Jellyfin.Plugin.JRay.Models;
 
 /// <summary>
-/// An actor visible on screen at a queried timestamp.
+/// An actor present in the scene at a queried timestamp.
 /// </summary>
-public class ActorAtTime
+/// <remarks>
+/// "Present in the scene", not "visible on screen". The truth file makes a claim
+/// about scene membership, so an actor who has turned away or is off-camera
+/// during a reverse shot is still present. The type was named
+/// <c>ActorAtTime</c>, which invited exactly the instantaneous reading SR-002
+/// forbids.
+/// </remarks>
+// TRACES: JR-005 | SR-002
+public class ActorInScene
 {
     /// <summary>
     /// Gets or sets the actor's display name.

Jellyfin.Plugin.JRay/Models/CoverageBreakdownRow.cs

@@ -0,0 +1,22 @@
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// One labelled row of a coverage breakdown (e.g. a single genre, or a single
+/// media type such as "Film" or "TV").
+/// </summary>
+public class CoverageBreakdownRow
+{
+    /// <summary>
+    /// Gets or sets the label for this row (genre name or media type name).
+    /// </summary>
+    [JsonPropertyName("label")]
+    public string Label { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the coverage counts for this row.
+    /// </summary>
+    [JsonPropertyName("counts")]
+    public CoverageCounts Counts { get; set; } = new();
+}

Jellyfin.Plugin.JRay/Models/CoverageCounts.cs

@@ -0,0 +1,41 @@
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// A count of library items bucketed by JRay coverage status. Used both for
+/// the overall totals and for each per-genre / per-media-type breakdown row.
+/// </summary>
+public class CoverageCounts
+{
+    /// <summary>
+    /// Gets or sets the total number of items in this bucket.
+    /// </summary>
+    [JsonPropertyName("total")]
+    public int Total { get; set; }
+
+    /// <summary>
+    /// Gets or sets the number of items that already have truth data.
+    /// </summary>
+    [JsonPropertyName("covered")]
+    public int Covered { get; set; }
+
+    /// <summary>
+    /// Gets or sets the number of items awaiting processing (no truth data,
+    /// not ignored). Includes prioritised-but-not-yet-covered items.
+    /// </summary>
+    [JsonPropertyName("pending")]
+    public int Pending { get; set; }
+
+    /// <summary>
+    /// Gets or sets the number of pending items that are prioritised.
+    /// </summary>
+    [JsonPropertyName("prioritised")]
+    public int Prioritised { get; set; }
+
+    /// <summary>
+    /// Gets or sets the number of items excluded from processing by an ignore rule.
+    /// </summary>
+    [JsonPropertyName("ignored")]
+    public int Ignored { get; set; }
+}

Jellyfin.Plugin.JRay/Models/CoverageReport.cs

@@ -0,0 +1,31 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// A snapshot of how much of the library has truth data, with overall totals
+/// and breakdowns by media type and by genre.
+/// </summary>
+public class CoverageReport
+{
+    /// <summary>
+    /// Gets or sets the coverage counts across the whole library.
+    /// </summary>
+    [JsonPropertyName("total")]
+    public CoverageCounts Total { get; set; } = new();
+
+    /// <summary>
+    /// Gets the per-media-type breakdown (Film vs TV).
+    /// </summary>
+    [JsonPropertyName("by_media_type")]
+    [JsonObjectCreationHandling(JsonObjectCreationHandling.Populate)]
+    public Collection<CoverageBreakdownRow> ByMediaType { get; } = new();
+
+    /// <summary>
+    /// Gets the per-genre breakdown, one row per genre present in the library.
+    /// </summary>
+    [JsonPropertyName("by_genre")]
+    [JsonObjectCreationHandling(JsonObjectCreationHandling.Populate)]
+    public Collection<CoverageBreakdownRow> ByGenre { get; } = new();
+}

Jellyfin.Plugin.JRay/Models/DependencyStatus.cs

@@ -0,0 +1,37 @@
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// Whether JRay's one hard dependency is satisfied, and what to do if it is not.
+/// </summary>
+/// <remarks>
+/// Jellyfin has no plugin dependency mechanism — a manifest cannot declare that
+/// another plugin is required, and nothing will install one. The gap is closed by
+/// telling the admin, on the page where they can act on it. A warning that exists
+/// only in the server log is one nobody reads.
+/// </remarks>
+public class DependencyStatus
+{
+    /// <summary>
+    /// Gets or sets a value indicating whether the File Transformation plugin was
+    /// found and JRay's overlay transformation registered with it.
+    /// </summary>
+    [JsonPropertyName("file_transformation_available")]
+    public bool FileTransformationAvailable { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether the overlay is switched on in
+    /// configuration. It is served only when this <i>and</i>
+    /// <see cref="FileTransformationAvailable"/> hold.
+    /// </summary>
+    [JsonPropertyName("overlay_enabled")]
+    public bool OverlayEnabled { get; set; }
+
+    /// <summary>
+    /// Gets or sets the repository manifest URL an admin adds to install the
+    /// missing dependency.
+    /// </summary>
+    [JsonPropertyName("file_transformation_manifest_url")]
+    public string FileTransformationManifestUrl { get; set; } = string.Empty;
+}

Jellyfin.Plugin.JRay/Models/JRayContext.cs

@@ -11,8 +11,8 @@ namespace Jellyfin.Plugin.JRay.Models;
 public class JRayContext
 {
     /// <summary>
-    /// Gets the list of actors visible on screen at the queried timestamp.
+    /// Gets the list of actors visible in the scene at the queried timestamp.
     /// </summary>
     [JsonPropertyName("actors")]
-    public Collection<ActorAtTime> Actors { get; } = new();
+    public Collection<ActorInScene> Actors { get; } = new();
 }

Jellyfin.Plugin.JRay/Models/Jmanifest.cs

@@ -0,0 +1,44 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// One shareable actor timeline for one cut of one title, as the public server
+/// serves it. See the server specification §2.
+/// </summary>
+/// <remarks>
+/// This is the <b>exchange envelope</b>, versioned by <c>jmanifest_version</c>
+/// and deliberately separate from the truth file's <c>schema_version</c>: a
+/// change to how manifests are transported need not force a truth-file bump.
+/// They currently coincide at 2 only because the SR-003 bump touched both.
+/// <para>
+/// A manifest is never trusted merely because a server served it (JR-027). Every
+/// field below is re-validated on receipt against the same rules the server
+/// applies on upload.
+/// </para>
+/// </remarks>
+// TRACES: JR-025, JR-027 | SR-003
+public class Jmanifest
+{
+    /// <summary>Gets or sets the exchange envelope version this manifest speaks.</summary>
+    [JsonPropertyName("jmanifest_version")]
+    public int JmanifestVersion { get; set; }
+
+    /// <summary>Gets or sets what the work is — TMDB/IMDB ids and episode coordinates.</summary>
+    [JsonPropertyName("identity")]
+    public JmanifestIdentity? Identity { get; set; }
+
+    /// <summary>Gets or sets which encode the timings apply to.</summary>
+    [JsonPropertyName("cut")]
+    public JmanifestCut? Cut { get; set; }
+
+    /// <summary>Gets or sets extraction provenance.</summary>
+    [JsonPropertyName("extraction")]
+    public JmanifestExtraction? Extraction { get; set; }
+
+    /// <summary>Gets the actors and their presence windows.</summary>
+    [JsonPropertyName("actors")]
+    [JsonObjectCreationHandling(JsonObjectCreationHandling.Populate)]
+    public Collection<JmanifestActor> Actors { get; } = new();
+}

Jellyfin.Plugin.JRay/Models/JmanifestActor.cs

@@ -0,0 +1,29 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>One actor's timeline within a manifest.</summary>
+public class JmanifestActor
+{
+    /// <summary>
+    /// Gets or sets the display name. Server-authoritative on download: the
+    /// server resolves each actor to a TMDB person and serves names from its own
+    /// table, so a name a contributor invented never round-trips.
+    /// </summary>
+    [JsonPropertyName("name")]
+    public string? Name { get; set; }
+
+    /// <summary>Gets or sets the IMDB person id.</summary>
+    [JsonPropertyName("imdb_id")]
+    public string? ImdbId { get; set; }
+
+    /// <summary>Gets or sets the TMDB person id — the primary join key.</summary>
+    [JsonPropertyName("tmdb_id")]
+    public string? TmdbId { get; set; }
+
+    /// <summary>Gets the presence windows.</summary>
+    [JsonPropertyName("scenes")]
+    [JsonObjectCreationHandling(JsonObjectCreationHandling.Populate)]
+    public Collection<JmanifestScene> Scenes { get; } = new();
+}

Jellyfin.Plugin.JRay/Models/JmanifestCut.cs

@@ -0,0 +1,32 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>Cut fingerprint (server spec §2, §3).</summary>
+public class JmanifestCut
+{
+    /// <summary>Gets or sets the decoded duration the timings came from.</summary>
+    [JsonPropertyName("runtime_sec")]
+    public double RuntimeSec { get; set; }
+
+    /// <summary>Gets or sets the container duration, if it differs.</summary>
+    [JsonPropertyName("container_duration_sec")]
+    public double? ContainerDurationSec { get; set; }
+
+    /// <summary>
+    /// Gets or sets the OpenSubtitles file hash, as a server may report it.
+    /// </summary>
+    /// <remarks>
+    /// Read-only in practice: the plugin never <em>sends</em> one. The file-hash
+    /// match tier is withdrawn on legal grounds — see
+    /// <see cref="Configuration.MatchTier"/> — because a file hash identifies the
+    /// exact release a user holds rather than the cut the timings describe.
+    /// </remarks>
+    [JsonPropertyName("video_hash")]
+    public string? VideoHash { get; set; }
+
+    /// <summary>Gets or sets the version-prefixed spectral-peak signature.</summary>
+    [JsonPropertyName("audio_signature")]
+    public string? AudioSignature { get; set; }
+}

Jellyfin.Plugin.JRay/Models/JmanifestExtraction.cs

@@ -0,0 +1,31 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>Extraction provenance (server spec §2).</summary>
+public class JmanifestExtraction
+{
+    /// <summary>Gets or sets the sampling rate used during extraction.</summary>
+    [JsonPropertyName("sample_fps")]
+    public double? SampleFps { get; set; }
+
+    /// <summary>
+    /// Gets or sets the re-acquisition timeout that shapes window extent.
+    /// Successor to the withdrawn <c>anneal_sec</c>.
+    /// </summary>
+    [JsonPropertyName("extinction_sec")]
+    public double? ExtinctionSec { get; set; }
+
+    /// <summary>Gets or sets the producing pipeline's version string.</summary>
+    [JsonPropertyName("pipeline_version")]
+    public string? PipelineVersion { get; set; }
+
+    /// <summary>Gets or sets how many references the gallery held.</summary>
+    [JsonPropertyName("gallery_size")]
+    public int? GallerySize { get; set; }
+
+    /// <summary>Gets or sets <c>global</c> or <c>limited</c>.</summary>
+    [JsonPropertyName("gallery_scope")]
+    public string? GalleryScope { get; set; }
+}

Jellyfin.Plugin.JRay/Models/JmanifestIdentity.cs

@@ -0,0 +1,44 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>Title identity (server spec §2).</summary>
+public class JmanifestIdentity
+{
+    /// <summary>Gets or sets <c>movie</c> or <c>episode</c>.</summary>
+    [JsonPropertyName("type")]
+    public string Type { get; set; } = string.Empty;
+
+    /// <summary>Gets or sets the TMDB id, for a movie.</summary>
+    [JsonPropertyName("tmdb_id")]
+    public string? TmdbId { get; set; }
+
+    /// <summary>Gets or sets the IMDB id, for a movie.</summary>
+    [JsonPropertyName("imdb_id")]
+    public string? ImdbId { get; set; }
+
+    /// <summary>Gets or sets the series TMDB id, for an episode.</summary>
+    [JsonPropertyName("series_tmdb_id")]
+    public string? SeriesTmdbId { get; set; }
+
+    /// <summary>Gets or sets the series IMDB id, for an episode.</summary>
+    [JsonPropertyName("series_imdb_id")]
+    public string? SeriesImdbId { get; set; }
+
+    /// <summary>Gets or sets the season number, for an episode.</summary>
+    [JsonPropertyName("season")]
+    public int? Season { get; set; }
+
+    /// <summary>Gets or sets the episode number, for an episode.</summary>
+    [JsonPropertyName("episode")]
+    public int? Episode { get; set; }
+
+    /// <summary>Gets or sets the display title.</summary>
+    [JsonPropertyName("title")]
+    public string? Title { get; set; }
+
+    /// <summary>Gets or sets the release year.</summary>
+    [JsonPropertyName("year")]
+    public int? Year { get; set; }
+}

Jellyfin.Plugin.JRay/Models/JmanifestScene.cs

@@ -0,0 +1,38 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// One presence window.
+/// </summary>
+/// <remarks>
+/// <b>A window is a claim about scene membership, not a recognition event</b>
+/// (SR-002). An actor who turns away, is occluded, or is off-camera while the
+/// shot cuts to whoever they are speaking to is still present — so a consumer
+/// must never read a window boundary as "the face was detected here", and must
+/// not merge, split or trim windows.
+/// </remarks>
+public class JmanifestScene
+{
+    /// <summary>Gets or sets the window start, in seconds.</summary>
+    [JsonPropertyName("start")]
+    public double Start { get; set; }
+
+    /// <summary>Gets or sets the window end, in seconds, inclusive.</summary>
+    [JsonPropertyName("end")]
+    public double End { get; set; }
+
+    /// <summary>
+    /// Gets or sets the accumulated posterior that justified this claim, in [0, 1].
+    /// </summary>
+    [JsonPropertyName("belief")]
+    public double? Belief { get; set; }
+
+    /// <summary>
+    /// Gets or sets how the actor was identified: <c>live</c>, <c>deferred</c>
+    /// or <c>pooled</c>.
+    /// </summary>
+    [JsonPropertyName("route")]
+    public string? Route { get; set; }
+}

Jellyfin.Plugin.JRay/Models/ManifestFetchResponse.cs

@@ -0,0 +1,31 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>The server's reply to a manifest fetch (server spec §4).</summary>
+public class ManifestFetchResponse
+{
+    /// <summary>
+    /// Gets or sets the cut-match tier that was achieved: <c>exact</c>,
+    /// <c>audio</c>, <c>runtime</c> or <c>loose</c>.
+    /// </summary>
+    [JsonPropertyName("match")]
+    public string Match { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the offset, in seconds, the client must add to every window.
+    /// </summary>
+    /// <remarks>
+    /// Non-zero only for an <c>audio</c>-tier match, where the same cut was
+    /// found at a different trim. <b>The server returns the offset; the client
+    /// applies it</b> — manifests are never rewritten, so one stored manifest
+    /// serves every trim of the same cut.
+    /// </remarks>
+    [JsonPropertyName("offset_sec")]
+    public double OffsetSec { get; set; }
+
+    /// <summary>Gets or sets the manifest itself.</summary>
+    [JsonPropertyName("manifest")]
+    public Jmanifest? Manifest { get; set; }
+}

Jellyfin.Plugin.JRay/Models/ManifestFetchResult.cs

@@ -0,0 +1,30 @@
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// What a fetch stored, and from where.
+/// </summary>
+public class ManifestFetchResult
+{
+    /// <summary>Gets or sets the server that supplied the manifest.</summary>
+    public string ServerUrl { get; set; } = string.Empty;
+
+    /// <summary>Gets or sets the cut-match tier achieved.</summary>
+    public string Match { get; set; } = string.Empty;
+
+    /// <summary>Gets or sets the offset applied to every window, in seconds.</summary>
+    public double OffsetSec { get; set; }
+
+    /// <summary>Gets or sets how many actors the stored truth file holds.</summary>
+    public int ActorCount { get; set; }
+
+    /// <summary>
+    /// Gets or sets a caveat to surface in the UI, or null when the match needs
+    /// no explanation.
+    /// </summary>
+    /// <remarks>
+    /// A <c>loose</c> match must surface as a caveat rather than being applied
+    /// silently — the runtimes differ by up to 30 seconds, which is usually a
+    /// different trim of the same cut but is not guaranteed to be.
+    /// </remarks>
+    public string? Caveat { get; set; }
+}

Jellyfin.Plugin.JRay/Models/MediaPolicyRule.cs

@@ -0,0 +1,38 @@
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// A single prioritise/ignore rule. A rule is uniquely identified by its
+/// <see cref="Scope"/> and <see cref="Value"/>; setting a new action for an
+/// existing scope+value replaces the previous one.
+/// </summary>
+public class MediaPolicyRule
+{
+    /// <summary>
+    /// Gets or sets the scope this rule targets (genre, series, or item).
+    /// </summary>
+    [JsonPropertyName("scope")]
+    public PolicyScope Scope { get; set; }
+
+    /// <summary>
+    /// Gets or sets the target value: a genre name for <see cref="PolicyScope.Genre"/>,
+    /// a series id for <see cref="PolicyScope.Series"/>, or an item id for
+    /// <see cref="PolicyScope.Item"/>.
+    /// </summary>
+    [JsonPropertyName("value")]
+    public string Value { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the action to apply (prioritise or ignore).
+    /// </summary>
+    [JsonPropertyName("action")]
+    public PolicyAction Action { get; set; }
+
+    /// <summary>
+    /// Gets or sets an optional human-readable label for the target (e.g. the
+    /// series or item display name), shown in the rules list. Informational only.
+    /// </summary>
+    [JsonPropertyName("label")]
+    public string Label { get; set; } = string.Empty;
+}

Jellyfin.Plugin.JRay/Models/PickerOption.cs

@@ -0,0 +1,23 @@
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// A selectable option for the config page's rule editor (a genre or a series),
+/// pairing the value stored in a rule with a human-readable label.
+/// </summary>
+public class PickerOption
+{
+    /// <summary>
+    /// Gets or sets the value stored in a <see cref="MediaPolicyRule"/>
+    /// (a genre name, or a series id).
+    /// </summary>
+    [JsonPropertyName("value")]
+    public string Value { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the label shown to the user (genre name, or series title).
+    /// </summary>
+    [JsonPropertyName("label")]
+    public string Label { get; set; } = string.Empty;
+}

Jellyfin.Plugin.JRay/Models/PolicyAction.cs

@@ -0,0 +1,15 @@
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// The action a <see cref="MediaPolicyRule"/> applies to matching items.
+/// A given scope+value can hold at most one action at a time, so an item
+/// can never be both prioritised and ignored by the same target.
+/// </summary>
+public enum PolicyAction
+{
+    /// <summary>Push matching items to the front of the work queue.</summary>
+    Prioritise,
+
+    /// <summary>Exclude matching items from the work queue entirely.</summary>
+    Ignore
+}

Jellyfin.Plugin.JRay/Models/PolicyScope.cs

@@ -0,0 +1,18 @@
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// The scope a <see cref="MediaPolicyRule"/> targets. More specific scopes
+/// override broader ones when resolving an item's effective policy
+/// (Item &gt; Series &gt; Genre).
+/// </summary>
+public enum PolicyScope
+{
+    /// <summary>Matches every item that carries a given genre.</summary>
+    Genre,
+
+    /// <summary>Matches every episode of a given series (by series id).</summary>
+    Series,
+
+    /// <summary>Matches a single library item (by item id).</summary>
+    Item
+}

Jellyfin.Plugin.JRay/Models/SeriesBundle.cs

@@ -0,0 +1,17 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>A series bundle (server spec §2).</summary>
+public class SeriesBundle
+{
+    /// <summary>Gets or sets the envelope version.</summary>
+    [JsonPropertyName("jmanifest_version")]
+    public int JmanifestVersion { get; set; }
+
+    /// <summary>Gets the episode manifests the server holds.</summary>
+    [JsonPropertyName("episodes")]
+    [JsonObjectCreationHandling(JsonObjectCreationHandling.Populate)]
+    public Collection<Jmanifest> Episodes { get; } = new();
+}

Jellyfin.Plugin.JRay/Models/ServerCapabilities.cs

@@ -0,0 +1,23 @@
+using System.Collections.ObjectModel;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>What a server says it supports (server spec §9a).</summary>
+public class ServerCapabilities
+{
+    /// <summary>Gets or sets the server's own identity.</summary>
+    [JsonPropertyName("server_id")]
+    public string? ServerId { get; set; }
+
+    /// <summary>
+    /// Gets the exchange envelope versions the server accepts.
+    /// </summary>
+    /// <remarks>
+    /// Checked once rather than discovered as a rejection per manifest across a
+    /// whole library sweep.
+    /// </remarks>
+    [JsonPropertyName("jmanifest_versions")]
+    [JsonObjectCreationHandling(JsonObjectCreationHandling.Populate)]
+    public Collection<int> JmanifestVersions { get; } = new();
+}

Jellyfin.Plugin.JRay/Models/TransformationPayload.cs

@@ -0,0 +1,22 @@
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// The object handed to JRay's transformation callback by the File
+/// Transformation plugin.
+/// </summary>
+/// <remarks>
+/// That plugin builds a Newtonsoft <c>JObject</c> with a single <c>contents</c>
+/// key and calls <c>JObject.ToObject(parameterType)</c> against this type.
+/// Newtonsoft binds member names case-insensitively, so <see cref="Contents"/>
+/// binds to <c>contents</c> without an attribute — and a System.Text.Json
+/// attribute would have no effect here.
+/// </remarks>
+public class TransformationPayload
+{
+    /// <summary>
+    /// Gets or sets the current contents of the file being served, including
+    /// any transformations applied by other plugins ahead of JRay in the
+    /// chain.
+    /// </summary>
+    public string? Contents { get; set; }
+}

Jellyfin.Plugin.JRay/Models/TruthActor.cs

@@ -5,8 +5,19 @@ namespace Jellyfin.Plugin.JRay.Models;
 
 /// <summary>
 /// One actor entry in a <see cref="TruthFile"/>, with the time windows during
-/// which they are visible on screen.
+/// which they are present in the scene.
 /// </summary>
+/// <remarks>
+/// "Present in the scene", not "visible on screen": a window is a claim about
+/// scene membership, so an actor who turns away or is off-camera during a
+/// reverse shot is still present. Two windows mean a genuine departure and
+/// return, not a break in detection.
+///
+/// Identity is public identifiers — never a name alone, which is ambiguous and
+/// unstable. <c>jellyfin_id</c> is preferred locally and stripped on
+/// contribution, being meaningless outside the instance that produced it.
+/// </remarks>
+// TRACES: JR-004, JR-007 | SR-001, SR-002
 public class TruthActor
 {
     /// <summary>
@@ -34,7 +45,7 @@ public class TruthActor
     public string JellyfinId { get; set; } = string.Empty;
 
     /// <summary>
-    /// Gets the list of [start_sec, end_sec] windows during which the actor is on screen.
+    /// Gets the list of [start_sec, end_sec] windows during which the actor is in the scene.
     /// </summary>
     [JsonPropertyName("scenes")]
     [JsonObjectCreationHandling(JsonObjectCreationHandling.Populate)]

Jellyfin.Plugin.JRay/Models/TruthFile.cs

@@ -5,8 +5,19 @@ namespace Jellyfin.Plugin.JRay.Models;
 
 /// <summary>
 /// Root object of a scene-actor-extraction "truth" file
-/// (schema_version 1, minimal verbosity). See SPEC.md.
+/// (schema_version 1, minimal verbosity). See SPEC.md §1.
 /// </summary>
+/// <remarks>
+/// JRay <b>owns</b> this format; the extraction pipeline is its producer and the
+/// public server carries a derived envelope. Because three repos ship
+/// independently, breaking changes are batched into one coordinated
+/// <c>schema_version</c> bump rather than made piecemeal.
+///
+/// This type is still the v1 shape. JR-002 replaces it: <c>anneal_sec</c> out,
+/// an <c>extraction</c> provenance block and a <c>cut</c> block in, and
+/// <c>scenes</c> becoming objects that carry belief and identification route.
+/// </remarks>
+// TRACES: JR-001, JR-002 | SR-003
 public class TruthFile
 {
     /// <summary>
@@ -34,7 +45,7 @@ public class TruthFile
     public double AnnealSec { get; set; }
 
     /// <summary>
-    /// Gets the list of actors detected in the film, each with their on-screen scene windows.
+    /// Gets the list of actors in the film, each with their scene-presence windows.
     /// </summary>
     [JsonPropertyName("actors")]
     [JsonObjectCreationHandling(JsonObjectCreationHandling.Populate)]

Jellyfin.Plugin.JRay/Models/TruthProvenance.cs

@@ -0,0 +1,98 @@
+using System;
+using System.Text.Json.Serialization;
+using Jellyfin.Plugin.JRay.Configuration;
+
+namespace Jellyfin.Plugin.JRay.Models;
+
+/// <summary>
+/// Where an item's truth data came from.
+/// </summary>
+public enum TruthSource
+{
+    /// <summary>A <c>.jray.json</c> file beside the media, written locally.</summary>
+    Sidecar = 0,
+
+    /// <summary>Pushed over HTTP by a worker that cannot write beside the media.</summary>
+    Pushed = 1,
+
+    /// <summary>Fetched from a manifest server and converted to a truth file.</summary>
+    Fetched = 2,
+}
+
+/// <summary>
+/// How an item's truth data was obtained, recorded alongside it.
+/// </summary>
+/// <remarks>
+/// The three sources are not interchangeable. A locally computed sidecar and a
+/// <c>loose</c>-tier manifest from a third-party server make claims of very
+/// different strength about the same item, and once stored they are otherwise
+/// indistinguishable — the truth file itself records nothing about how it
+/// arrived.
+///
+/// <para>
+/// This is stored <b>beside</b> the truth file rather than inside it. Injecting
+/// fields would mean the bytes served back are not the bytes the producer wrote,
+/// which is the property JR-004 turns on.
+/// </para>
+/// </remarks>
+// TRACES: JR-010, JR-036 | PR-001
+public class TruthProvenance
+{
+    /// <summary>
+    /// Gets or sets which of the three routes delivered this truth data.
+    /// </summary>
+    [JsonPropertyName("source")]
+    public TruthSource Source { get; set; }
+
+    /// <summary>
+    /// Gets or sets the server a fetched manifest came from. Empty for the
+    /// local sources, whose origin is this instance.
+    /// </summary>
+    [JsonPropertyName("server_url")]
+    public string ServerUrl { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the cut-match tier a fetched manifest reached.
+    /// </summary>
+    /// <remarks>
+    /// Null for local sources: a sidecar or a push is about *this* file, so
+    /// there is no cut to match. The tier is what makes a fetched claim
+    /// interpretable — <c>loose</c> means "probably the same cut", which the UI
+    /// must surface rather than apply silently (JR-036).
+    /// </remarks>
+    [JsonPropertyName("match_tier")]
+    public MatchTier? MatchTier { get; set; }
+
+    /// <summary>
+    /// Gets or sets the offset, in seconds, applied to every window before
+    /// storage so the stored timings are in this file's own timebase (JR-030).
+    /// </summary>
+    /// <remarks>
+    /// Recorded because it is otherwise unrecoverable: once applied, the stored
+    /// windows look native, and nothing would say they had been shifted.
+    /// </remarks>
+    [JsonPropertyName("offset_sec")]
+    public double OffsetSec { get; set; }
+
+    /// <summary>
+    /// Gets or sets a human-readable caveat to surface with the overlay, or
+    /// null when the claim needs none.
+    /// </summary>
+    [JsonPropertyName("caveat")]
+    public string? Caveat { get; set; }
+
+    /// <summary>
+    /// Gets or sets when this truth data was recorded, UTC.
+    /// </summary>
+    [JsonPropertyName("recorded_at")]
+    public DateTime RecordedAt { get; set; }
+
+    /// <summary>
+    /// Creates provenance for truth data produced on this instance.
+    /// </summary>
+    /// <param name="source">Either <see cref="TruthSource.Sidecar"/> or <see cref="TruthSource.Pushed"/>.</param>
+    /// <param name="recordedAt">When it was recorded, UTC.</param>
+    /// <returns>The provenance record.</returns>
+    public static TruthProvenance Local(TruthSource source, DateTime recordedAt)
+        => new() { Source = source, RecordedAt = recordedAt };
+}

Jellyfin.Plugin.JRay/Plugin.cs

@@ -17,6 +17,7 @@ namespace Jellyfin.Plugin.JRay;
 public class Plugin : BasePlugin<PluginConfiguration>, IHasWebPages
 {
     private readonly ILogger<Plugin> _logger;
+    private readonly bool _usingFileTransformation;
 
     /// <summary>
     /// Initializes a new instance of the <see cref="Plugin"/> class.
@@ -30,8 +31,25 @@ public class Plugin : BasePlugin<PluginConfiguration>, IHasWebPages
         Instance = this;
         _logger = logger;
 
-        WebClientPatchService.Apply(ApplicationPaths, Configuration.EnableOverlay, _logger);
+        // The File Transformation plugin rewrites index.html as it is served.
-        ConfigurationChanged += (_, _) => WebClientPatchService.Apply(ApplicationPaths, Configuration.EnableOverlay, _logger);
+        // Registration is unconditional: the transformation itself checks
+        // EnableOverlay at request time, so toggling the setting takes effect
+        // without re-registering.
+        _usingFileTransformation = FileTransformationRegistration.TryRegister(_logger);
+
+        if (!_usingFileTransformation)
+        {
+            _logger.LogWarning(
+                "JRay: the pause overlay is disabled because the File Transformation plugin " +
+                "is not available. Install it from " +
+                "https://github.com/IAmParadox27/jellyfin-plugin-file-transformation. " +
+                "All other JRay features are unaffected.");
+        }
+
+        // JRay never injects into index.html. This only ever *removes* a patch
+        // left by an earlier version of JRay, identified by its own marker —
+        // see SPEC.md JR-021/JR-022.
+        WebClientPatchService.RemoveLegacyPatch(ApplicationPaths, _logger);
     }
 
     /// <inheritdoc />
@@ -45,6 +63,20 @@ public class Plugin : BasePlugin<PluginConfiguration>, IHasWebPages
     /// </summary>
     public static Plugin? Instance { get; private set; }
 
+    /// <summary>
+    /// Gets a value indicating whether the pause overlay should currently be
+    /// served. Read by the File Transformation callback at request time, so
+    /// toggling the setting takes effect without re-registering.
+    /// </summary>
+    internal static bool OverlayEnabled => Instance?.Configuration.EnableOverlay ?? false;
+
+    /// <summary>
+    /// Gets a value indicating whether the File Transformation plugin was found
+    /// at startup. When it was not, the overlay is disabled and every other JRay
+    /// feature continues to work.
+    /// </summary>
+    internal static bool FileTransformationAvailable => Instance?._usingFileTransformation ?? false;
+
     /// <inheritdoc />
     public IEnumerable<PluginPageInfo> GetPages()
     {

Jellyfin.Plugin.JRay/ServiceRegistrator.cs

@@ -16,5 +16,11 @@ public class ServiceRegistrator : IPluginServiceRegistrator
     {
         serviceCollection.AddSingleton<IManagedTruthStore, ManagedTruthStore>();
         serviceCollection.AddSingleton<ITruthDataService, TruthDataService>();
+        serviceCollection.AddSingleton<IMediaPolicyStore, MediaPolicyStore>();
+
+        // Singleton so per-server backoff state survives across requests: a
+        // server that is down should be skipped for the whole sweep, not
+        // retried once per item (JR-037).
+        serviceCollection.AddSingleton<IManifestExchangeClient, ManifestExchangeClient>();
     }
 }

Jellyfin.Plugin.JRay/Services/FileTransformationRegistration.cs

@@ -0,0 +1,175 @@
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.Loader;
+using System.Text.Json;
+using Jellyfin.Plugin.JRay.Models;
+using Microsoft.Extensions.Logging;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>
+/// Registers JRay's overlay script with the
+/// <see href="https://github.com/IAmParadox27/jellyfin-plugin-file-transformation">File Transformation</see>
+/// plugin, which rewrites <c>index.html</c> as it is served instead of
+/// modifying the file on disk. This is non-destructive and composes with
+/// other plugins that patch the same file.
+/// </summary>
+/// <remarks>
+/// File Transformation is referenced by reflection (rather than a NuGet
+/// package reference) so JRay still loads when it isn't installed. JRay must
+/// never bundle the assembly: a bundled copy would sit in a different
+/// <c>AssemblyLoadContext</c> from the real one, which is precisely the failure
+/// the reflection integration exists to avoid.
+///
+/// This is the only route by which JRay reaches the web client. There is no
+/// on-disk fallback (JR-021), so when registration fails the overlay is simply
+/// disabled — which is why both failure paths log a warning naming the missing
+/// plugin rather than quietly degrading.
+/// </remarks>
+// TRACES: JR-020, JR-023 | PR-004
+public static class FileTransformationRegistration
+{
+    /// <summary>
+    /// The marker comment written alongside the injected script tag, used to
+    /// keep the transformation idempotent.
+    /// </summary>
+    internal const string Marker = "<!-- jray-overlay -->";
+
+    /// <summary>
+    /// Repository manifest an admin adds to install the dependency. Surfaced on
+    /// the configuration page rather than only in the log, since that is where
+    /// it can be acted on.
+    /// </summary>
+    public const string ManifestUrl = "https://www.iamparadox.dev/jellyfin/plugins/manifest.json";
+
+    private const string PluginInterfaceTypeName = "Jellyfin.Plugin.FileTransformation.PluginInterface";
+    private const string RegisterMethodName = "RegisterTransformation";
+    private const string ScriptTag = "<script defer src=\"/Plugins/JRay/ClientScript\"></script>";
+    private const string BodyClose = "</body>";
+
+    /// <summary>
+    /// Stable id for JRay's index.html transformation. File Transformation
+    /// keys registrations on this, so re-registering replaces rather than
+    /// duplicates.
+    /// </summary>
+    private static readonly Guid TransformationId = Guid.Parse("2c9b5a41-6ad0-4c1e-9f7d-1d1e6b0d5a90");
+
+    /// <summary>
+    /// Attempts to register JRay's index.html transformation with the File
+    /// Transformation plugin.
+    /// </summary>
+    /// <param name="logger">The logger.</param>
+    /// <returns><see langword="true"/> if the transformation was registered;
+    /// <see langword="false"/> if the File Transformation plugin is not
+    /// installed or its interface could not be invoked.</returns>
+    public static bool TryRegister(ILogger logger)
+    {
+        ArgumentNullException.ThrowIfNull(logger);
+
+        try
+        {
+            var registerMethod = ResolveRegisterMethod();
+            if (registerMethod is null)
+            {
+                logger.LogWarning(
+                    "JRay: the File Transformation plugin was not found, so the pause overlay is "
+                    + "disabled. JRay does not modify index.html on disk and has no fallback. "
+                    + "Install it from {ManifestUrl} to enable the overlay; every other JRay "
+                    + "feature is unaffected.",
+                    ManifestUrl);
+                return false;
+            }
+
+            var payload = BuildPayload(registerMethod);
+            registerMethod.Invoke(null, [payload]);
+
+            logger.LogInformation("JRay: registered index.html transformation with the File Transformation plugin.");
+            return true;
+        }
+        catch (Exception ex) when (ex is TargetInvocationException or InvalidOperationException or JsonException or MissingMethodException)
+        {
+            logger.LogWarning(
+                ex,
+                "JRay: the File Transformation plugin is present but registration failed, so the "
+                + "pause overlay is disabled. JRay does not modify index.html on disk and has no "
+                + "fallback. Every other JRay feature is unaffected.");
+            return false;
+        }
+    }
+
+    /// <summary>
+    /// The transformation callback invoked by the File Transformation plugin.
+    /// It is resolved by name via reflection, so the signature (public,
+    /// static, single payload parameter, returns <see cref="string"/>) must
+    /// not change.
+    /// </summary>
+    /// <param name="payload">The current state of the file being served.</param>
+    /// <returns>The transformed file contents.</returns>
+    public static string TransformIndexHtml(TransformationPayload payload)
+    {
+        ArgumentNullException.ThrowIfNull(payload);
+
+        var contents = payload.Contents ?? string.Empty;
+        if (!Plugin.OverlayEnabled || contents.Contains(Marker, StringComparison.Ordinal))
+        {
+            return contents;
+        }
+
+        var index = contents.LastIndexOf(BodyClose, StringComparison.OrdinalIgnoreCase);
+        if (index < 0)
+        {
+            return contents;
+        }
+
+        return contents[..index]
+            + ScriptTag
+            + Marker
+            + "\n"
+            + contents[index..];
+    }
+
+    private static MethodInfo? ResolveRegisterMethod()
+    {
+        var assembly = AssemblyLoadContext.All
+            .SelectMany(context => context.Assemblies)
+            .FirstOrDefault(candidate => candidate.FullName?.Contains(".FileTransformation", StringComparison.Ordinal) ?? false);
+
+        return assembly?
+            .GetType(PluginInterfaceTypeName)?
+            .GetMethod(RegisterMethodName, BindingFlags.Public | BindingFlags.Static);
+    }
+
+    /// <summary>
+    /// Builds the registration payload. File Transformation expects a
+    /// Newtonsoft <c>JObject</c>, which JRay does not reference, so the
+    /// payload is serialized to JSON and parsed back through the type the
+    /// target method actually declares.
+    /// </summary>
+    private static object BuildPayload(MethodInfo registerMethod)
+    {
+        // File Transformation matches this against Assembly.FullName exactly,
+        // so it must be the full display name, not the short name.
+        var assemblyName = typeof(FileTransformationRegistration).Assembly.FullName
+            ?? throw new InvalidOperationException("JRay assembly has no name.");
+
+        var json = JsonSerializer.Serialize(new
+        {
+            id = TransformationId.ToString("D", CultureInfo.InvariantCulture),
+            fileNamePattern = "index.html",
+            callbackAssembly = assemblyName,
+            callbackClass = typeof(FileTransformationRegistration).FullName,
+            callbackMethod = nameof(TransformIndexHtml)
+        });
+
+        var payloadType = registerMethod.GetParameters().FirstOrDefault()?.ParameterType
+            ?? throw new InvalidOperationException("RegisterTransformation has no parameters.");
+
+        var parseMethod = payloadType.GetMethod("Parse", BindingFlags.Public | BindingFlags.Static, [typeof(string)])
+            ?? throw new InvalidOperationException($"Cannot construct File Transformation payload of type '{payloadType.FullName}'.");
+
+        return parseMethod.Invoke(null, [json])
+            ?? throw new InvalidOperationException("File Transformation payload parsed to null.");
+    }
+}

Jellyfin.Plugin.JRay/Services/Interfaces/IManagedTruthStore.cs

@@ -25,9 +25,21 @@ public interface IManagedTruthStore
     /// </summary>
     /// <param name="itemId">The Jellyfin library item id.</param>
     /// <param name="truth">The truth file contents to persist.</param>
+    /// <param name="provenance">How this truth data was obtained.</param>
     /// <param name="cancellationToken">Cancellation token.</param>
     /// <returns>A task that completes when the file has been written.</returns>
-    Task SaveAsync(Guid itemId, TruthFile truth, CancellationToken cancellationToken);
+    /// <remarks>
+    /// Provenance is written beside the truth file, never into it: the bytes
+    /// served back must be the bytes the producer wrote (JR-004).
+    /// </remarks>
+    Task SaveAsync(Guid itemId, TruthFile truth, TruthProvenance provenance, CancellationToken cancellationToken);
+
+    /// <summary>
+    /// Loads the provenance recorded alongside an item's managed truth data.
+    /// </summary>
+    /// <param name="itemId">The Jellyfin library item id.</param>
+    /// <returns>The provenance, or null if this item has no managed truth data.</returns>
+    TruthProvenance? LoadProvenance(Guid itemId);
 
     /// <summary>
     /// Deletes the managed truth file for the given item, if one exists.

Jellyfin.Plugin.JRay/Services/Interfaces/IManifestExchangeClient.cs

@@ -0,0 +1,53 @@
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using Jellyfin.Plugin.JRay.Configuration;
+
+namespace Jellyfin.Plugin.JRay.Services.Interfaces;
+
+/// <summary>
+/// Fetches actor-timeline manifests from the configured public servers.
+/// </summary>
+/// <remarks>
+/// Satisfies <c>JRay-public-server</c> UR-007: the plugin queries a configurable,
+/// <b>ordered</b> list of servers, and the first result clearing the configured
+/// match tier wins.
+/// </remarks>
+// TRACES: JR-025 | PR-006
+public interface IManifestExchangeClient
+{
+    /// <summary>
+    /// Fetches a movie manifest from the first server that has an acceptable one.
+    /// </summary>
+    /// <param name="servers">The configured servers, in trust order.</param>
+    /// <param name="minimumTier">The lowest cut-match tier that may be stored.</param>
+    /// <param name="query">Identity and cut parameters for the local item.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The accepted manifest, or null when no server had one.</returns>
+    Task<ManifestFetchOutcome?> FetchMovieAsync(
+        IReadOnlyList<ManifestServer> servers,
+        MatchTier minimumTier,
+        TitleQuery query,
+        CancellationToken cancellationToken);
+
+    /// <summary>
+    /// Fetches a single episode manifest.
+    /// </summary>
+    /// <param name="servers">The configured servers, in trust order.</param>
+    /// <param name="minimumTier">The lowest cut-match tier that may be stored.</param>
+    /// <param name="query">Identity and cut parameters for the local item.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The accepted manifest, or null when no server had one.</returns>
+    Task<ManifestFetchOutcome?> FetchEpisodeAsync(
+        IReadOnlyList<ManifestServer> servers,
+        MatchTier minimumTier,
+        TitleQuery query,
+        CancellationToken cancellationToken);
+
+    /// <summary>
+    /// Per-server reachability and last error, for the configuration page.
+    /// </summary>
+    /// <param name="servers">The configured servers.</param>
+    /// <returns>One status entry per configured server.</returns>
+    IReadOnlyList<ServerStatus> GetStatus(IReadOnlyList<ManifestServer> servers);
+}

Jellyfin.Plugin.JRay/Services/Interfaces/IMediaPolicyStore.cs

@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+using Jellyfin.Plugin.JRay.Models;
+
+namespace Jellyfin.Plugin.JRay.Services.Interfaces;
+
+/// <summary>
+/// Stores the prioritise/ignore rules that shape the work-discovery API
+/// (<c>GET /Plugins/JRay/Tasks/Pending</c>). Rules can target a genre, a
+/// series, or a single item; more specific scopes override broader ones.
+/// </summary>
+public interface IMediaPolicyStore
+{
+    /// <summary>
+    /// Gets all currently configured rules.
+    /// </summary>
+    /// <returns>The list of rules (a copy; safe to enumerate).</returns>
+    IReadOnlyList<MediaPolicyRule> GetRules();
+
+    /// <summary>
+    /// Adds or replaces the rule for a given scope+value. If a rule already
+    /// exists for the same scope and value, its action and label are updated,
+    /// so a target can never hold two conflicting actions.
+    /// </summary>
+    /// <param name="rule">The rule to set.</param>
+    void SetRule(MediaPolicyRule rule);
+
+    /// <summary>
+    /// Removes the rule matching the given scope and value, if present.
+    /// </summary>
+    /// <param name="scope">The scope of the rule to remove.</param>
+    /// <param name="value">The value of the rule to remove.</param>
+    /// <returns><c>true</c> if a rule was removed.</returns>
+    bool RemoveRule(PolicyScope scope, string value);
+}

Jellyfin.Plugin.JRay/Services/Interfaces/ITruthDataService.cs

@@ -18,6 +18,17 @@ public interface ITruthDataService
     /// <returns>The parsed truth file, or null if no truth file exists for this item.</returns>
     Task<TruthFile?> GetTruthAsync(Guid itemId, CancellationToken cancellationToken);
 
+    /// <summary>
+    /// Gets how the item's truth data was obtained, or null if it has none.
+    /// </summary>
+    /// <remarks>
+    /// Resolves the same precedence as <see cref="GetTruthAsync"/>: managed
+    /// truth (pushed or fetched) wins, and a sidecar is reported as such.
+    /// </remarks>
+    /// <param name="itemId">The Jellyfin library item id.</param>
+    /// <returns>The provenance of the truth data that would be served.</returns>
+    TruthProvenance? GetProvenance(Guid itemId);
+
     /// <summary>
     /// Removes any cached truth file for the given item, so the next
     /// <see cref="GetTruthAsync"/> call re-reads from the managed store or sidecar file.

Jellyfin.Plugin.JRay/Services/ManagedTruthStore.cs

@@ -14,6 +14,11 @@ namespace Jellyfin.Plugin.JRay.Services;
 /// Stores truth files pushed directly to JRay (e.g. by a remote extraction
 /// worker) under the plugin's configuration directory, keyed by item id.
 /// </summary>
+/// <remarks>
+/// Deliberately outside the media library filesystem, so a worker that cannot
+/// write beside the media file is not a second-class producer.
+/// </remarks>
+// TRACES: JR-009, JR-010 | PR-004
 public sealed class ManagedTruthStore : IManagedTruthStore
 {
     private static readonly JsonSerializerOptions JsonOptions = new(JsonSerializerDefaults.Web);
@@ -55,7 +60,7 @@ public sealed class ManagedTruthStore : IManagedTruthStore
     }
 
     /// <inheritdoc />
-    public async Task SaveAsync(Guid itemId, TruthFile truth, CancellationToken cancellationToken)
+    public async Task SaveAsync(Guid itemId, TruthFile truth, TruthProvenance provenance, CancellationToken cancellationToken)
     {
         var path = GetPath(itemId);
         var directory = Path.GetDirectoryName(path) ?? throw new InvalidOperationException("Managed truth path has no directory.");
@@ -68,11 +73,52 @@ public sealed class ManagedTruthStore : IManagedTruthStore
         }
 
         File.Move(tempPath, path, overwrite: true);
+
+        // Written after the truth file, so a crash between the two leaves truth
+        // with no provenance (readable, source unknown) rather than provenance
+        // describing a file that is not there.
+        var provenancePath = GetProvenancePath(itemId);
+        var provenanceTemp = provenancePath + ".tmp";
+        using (var stream = File.Create(provenanceTemp))
+        {
+            await JsonSerializer.SerializeAsync(stream, provenance, JsonOptions, cancellationToken).ConfigureAwait(false);
+        }
+
+        File.Move(provenanceTemp, provenancePath, overwrite: true);
+    }
+
+    /// <inheritdoc />
+    public TruthProvenance? LoadProvenance(Guid itemId)
+    {
+        var path = GetProvenancePath(itemId);
+        if (!File.Exists(path))
+        {
+            return null;
+        }
+
+        try
+        {
+            using var stream = File.OpenRead(path);
+            return JsonSerializer.Deserialize<TruthProvenance>(stream, JsonOptions);
+        }
+        catch (Exception ex) when (ex is IOException or JsonException)
+        {
+            // Provenance is metadata about the claim, not the claim. Losing it
+            // must never make readable truth data unreadable.
+            _logger.LogWarning(ex, "JRay: failed to read truth provenance at {Path}", path);
+            return null;
+        }
     }
 
     /// <inheritdoc />
     public bool Delete(Guid itemId)
     {
+        var provenancePath = GetProvenancePath(itemId);
+        if (File.Exists(provenancePath))
+        {
+            File.Delete(provenancePath);
+        }
+
         var path = GetPath(itemId);
         if (!File.Exists(path))
         {
@@ -93,4 +139,9 @@ public sealed class ManagedTruthStore : IManagedTruthStore
     {
         return Path.Combine(_applicationPaths.PluginConfigurationsPath, "JRay", "truth", itemId.ToString("D") + ".json");
     }
+
+    private string GetProvenancePath(Guid itemId)
+    {
+        return Path.Combine(_applicationPaths.PluginConfigurationsPath, "JRay", "truth", itemId.ToString("D") + ".provenance.json");
+    }
 }

Jellyfin.Plugin.JRay/Services/ManifestConverter.cs

@@ -0,0 +1,100 @@
+using System;
+using System.Globalization;
+using Jellyfin.Plugin.JRay.Configuration;
+using Jellyfin.Plugin.JRay.Models;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>
+/// Converts a fetched manifest into the truth file the plugin stores.
+/// </summary>
+// TRACES: JR-030 | SR-002, SR-003
+public static class ManifestConverter
+{
+    /// <summary>
+    /// Builds a truth file from a manifest, shifting every window by
+    /// <paramref name="offsetSec"/>.
+    /// </summary>
+    /// <remarks>
+    /// <b>The offset is applied here, once, at store time.</b> The server returns
+    /// it and the client applies it, so a single stored manifest serves every
+    /// trim of the same cut without ever being rewritten upstream. Applying it on
+    /// the way in means the stored truth is always in the local file's own
+    /// timebase, so the overlay and the <c>jray?t=</c> query need no offset
+    /// awareness at read time — the alternative would put the same correction in
+    /// every reader, forever, and one of them would eventually forget.
+    /// <para>
+    /// Windows are shifted, never reshaped: a window is a claim about scene
+    /// membership (SR-002), so merging or trimming would answer a different
+    /// question than the one the extraction pipeline answered.
+    /// </para>
+    /// </remarks>
+    /// <param name="manifest">The validated manifest.</param>
+    /// <param name="offsetSec">Seconds to add to every window.</param>
+    /// <param name="mediaPath">Local media path, recorded informationally.</param>
+    /// <returns>The truth file to store.</returns>
+    public static TruthFile ToTruthFile(Jmanifest manifest, double offsetSec, string mediaPath)
+    {
+        ArgumentNullException.ThrowIfNull(manifest);
+
+        var truth = new TruthFile
+        {
+            SchemaVersion = 1,
+            Movie = mediaPath ?? string.Empty,
+            SampleFps = manifest.Extraction?.SampleFps ?? 0,
+        };
+
+        foreach (var actor in manifest.Actors)
+        {
+            var converted = new TruthActor
+            {
+                Name = actor.Name ?? string.Empty,
+                ImdbId = actor.ImdbId ?? string.Empty,
+                TmdbId = actor.TmdbId ?? string.Empty,
+            };
+
+            foreach (var scene in actor.Scenes)
+            {
+                // Clamped at zero: a negative offset on an early window would
+                // otherwise produce a start before the file begins, which no
+                // reader can index.
+                var start = Math.Max(0, scene.Start + offsetSec);
+                var end = Math.Max(start, scene.End + offsetSec);
+                converted.Scenes.Add(new[] { start, end });
+            }
+
+            truth.Actors.Add(converted);
+        }
+
+        return truth;
+    }
+
+    /// <summary>
+    /// A short, human-readable description of how a manifest matched, for the
+    /// UI to show as a caveat.
+    /// </summary>
+    /// <remarks>
+    /// A <c>loose</c> match should surface as a caveat rather than being applied
+    /// silently: it means the runtimes differ by up to 30 seconds, which is
+    /// usually a different trim of the same cut but is not guaranteed to be.
+    /// </remarks>
+    /// <param name="tier">The tier achieved.</param>
+    /// <param name="offsetSec">The offset applied.</param>
+    /// <returns>A caveat string, or null when the match needs no explanation.</returns>
+    public static string? DescribeCaveat(MatchTier tier, double offsetSec)
+    {
+        if (tier == MatchTier.Loose)
+        {
+            return "Matched loosely — the runtime differs from this server's copy, so timings may drift.";
+        }
+
+        if (Math.Abs(offsetSec) > 0.001)
+        {
+            return string.Create(
+                CultureInfo.InvariantCulture,
+                $"Matched by audio content and shifted by {offsetSec:0.##}s to align with this file.");
+        }
+
+        return null;
+    }
+}

Jellyfin.Plugin.JRay/Services/ManifestExchangeClient.cs

@@ -0,0 +1,447 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Net.Http;
+using System.Text.Json;
+using System.Threading;
+using System.Threading.Tasks;
+using Jellyfin.Plugin.JRay.Configuration;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services.Interfaces;
+using Microsoft.Extensions.Logging;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>
+/// Fetches actor-timeline manifests from the configured servers.
+/// </summary>
+/// <remarks>
+/// Servers are an <b>ordered list</b>, and order is the user's trust ranking made
+/// explicit: for a fetch, servers are tried in order and the <i>first acceptable</i>
+/// result wins — acceptable meaning it clears the configured match tier.
+/// <para>
+/// First-match rather than best-match is deliberate. Querying every server for
+/// every item multiplies egress, leaks the library to more parties, and the
+/// ordering already encodes which source the admin prefers. Each configured
+/// server multiplies the privacy exposure described in the server spec §9, so
+/// later servers are queried only for what earlier ones lacked.
+/// </para>
+/// </remarks>
+// TRACES: JR-025, JR-029, JR-030, JR-037 | PR-005, PR-006
+public class ManifestExchangeClient : IManifestExchangeClient, IDisposable
+{
+    /// <summary>Server spec §9: a single manifest response is capped at 2 MiB.</summary>
+    public const long MaxManifestBytes = 2 * 1024 * 1024;
+
+    /// <summary>Server spec §9: a bundle response is capped at 25 MiB.</summary>
+    public const long MaxBundleBytes = 25L * 1024 * 1024;
+
+    private static readonly TimeSpan ConnectTimeout = TimeSpan.FromSeconds(5);
+    private static readonly TimeSpan ReadTimeout = TimeSpan.FromSeconds(30);
+
+    /// <summary>
+    /// How long a server that failed is skipped for, doubling each consecutive
+    /// failure. One dead server must never stall a library sweep.
+    /// </summary>
+    private static readonly TimeSpan BaseBackoff = TimeSpan.FromMinutes(1);
+    private static readonly TimeSpan MaxBackoff = TimeSpan.FromHours(1);
+
+    private readonly HttpClient _http;
+    private readonly ILogger<ManifestExchangeClient> _logger;
+    private readonly ConcurrentDictionary<string, ServerHealth> _health = new(StringComparer.Ordinal);
+    private readonly bool _ownsClient;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ManifestExchangeClient"/> class.
+    /// </summary>
+    /// <param name="logger">Logger.</param>
+    public ManifestExchangeClient(ILogger<ManifestExchangeClient> logger)
+        : this(logger, null)
+    {
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ManifestExchangeClient"/> class
+    /// with an injected transport, for testing.
+    /// </summary>
+    /// <param name="logger">Logger.</param>
+    /// <param name="httpClient">Transport to use, or null to build the default.</param>
+    public ManifestExchangeClient(ILogger<ManifestExchangeClient> logger, HttpClient? httpClient)
+    {
+        _logger = logger;
+        _ownsClient = httpClient is null;
+        _http = httpClient ?? new HttpClient(new SocketsHttpHandler
+        {
+            ConnectTimeout = ConnectTimeout,
+            // Certificate validation is never disabled: a plaintext or
+            // unverified server would let any network intermediary rewrite
+            // actor overlays.
+            AutomaticDecompression = System.Net.DecompressionMethods.All,
+        })
+        {
+            Timeout = ReadTimeout,
+        };
+    }
+
+    /// <inheritdoc />
+    public async Task<ManifestFetchOutcome?> FetchMovieAsync(
+        IReadOnlyList<ManifestServer> servers,
+        MatchTier minimumTier,
+        TitleQuery query,
+        CancellationToken cancellationToken)
+    {
+        ArgumentNullException.ThrowIfNull(servers);
+        ArgumentNullException.ThrowIfNull(query);
+
+        foreach (var server in Eligible(servers))
+        {
+            var url = BuildUrl(server, "manifests/movie", query);
+            if (url is null)
+            {
+                continue;
+            }
+
+            var outcome = await TryFetchOneAsync(server, url, query, minimumTier, cancellationToken)
+                .ConfigureAwait(false);
+            if (outcome is not null)
+            {
+                // First acceptable result wins — no further servers are queried,
+                // which is what bounds the privacy exposure.
+                return outcome;
+            }
+        }
+
+        return null;
+    }
+
+    /// <inheritdoc />
+    public async Task<ManifestFetchOutcome?> FetchEpisodeAsync(
+        IReadOnlyList<ManifestServer> servers,
+        MatchTier minimumTier,
+        TitleQuery query,
+        CancellationToken cancellationToken)
+    {
+        ArgumentNullException.ThrowIfNull(servers);
+        ArgumentNullException.ThrowIfNull(query);
+
+        foreach (var server in Eligible(servers))
+        {
+            var url = BuildUrl(server, "manifests/episode", query);
+            if (url is null)
+            {
+                continue;
+            }
+
+            var outcome = await TryFetchOneAsync(server, url, query, minimumTier, cancellationToken)
+                .ConfigureAwait(false);
+            if (outcome is not null)
+            {
+                return outcome;
+            }
+        }
+
+        return null;
+    }
+
+    /// <inheritdoc />
+    public IReadOnlyList<ServerStatus> GetStatus(IReadOnlyList<ManifestServer> servers)
+    {
+        ArgumentNullException.ThrowIfNull(servers);
+
+        return servers.Select(s =>
+        {
+            _health.TryGetValue(s.Url, out var h);
+            return new ServerStatus
+            {
+                Url = s.Url,
+                Name = s.Name,
+                Enabled = s.Enabled,
+                Reachable = h is null || h.ConsecutiveFailures == 0,
+                LastError = h?.LastError,
+                SkippedUntil = h?.SkipUntil,
+            };
+        }).ToList();
+    }
+
+    /// <summary>
+    /// Servers that are enabled and not currently in backoff, in configured order.
+    /// </summary>
+    private IEnumerable<ManifestServer> Eligible(IReadOnlyList<ManifestServer> servers)
+    {
+        var now = DateTimeOffset.UtcNow;
+        foreach (var s in servers)
+        {
+            if (!s.Enabled || string.IsNullOrWhiteSpace(s.Url))
+            {
+                continue;
+            }
+
+            if (_health.TryGetValue(s.Url, out var h) && h.SkipUntil > now)
+            {
+                _logger.LogDebug("Skipping {Url} until {Until} after {Failures} failures", s.Url, h.SkipUntil, h.ConsecutiveFailures);
+                continue;
+            }
+
+            yield return s;
+        }
+    }
+
+    private async Task<ManifestFetchOutcome?> TryFetchOneAsync(
+        ManifestServer server,
+        Uri url,
+        TitleQuery query,
+        MatchTier minimumTier,
+        CancellationToken cancellationToken)
+    {
+        try
+        {
+            using var response = await _http
+                .GetAsync(url, HttpCompletionOption.ResponseHeadersRead, cancellationToken)
+                .ConfigureAwait(false);
+
+            if (response.StatusCode == System.Net.HttpStatusCode.NotFound)
+            {
+                // Not an error: this server simply does not hold it. The next
+                // server in the list gets a turn.
+                RecordSuccess(server.Url);
+                return null;
+            }
+
+            if (!response.IsSuccessStatusCode)
+            {
+                RecordFailure(server.Url, $"HTTP {(int)response.StatusCode}");
+                return null;
+            }
+
+            var json = await ReadCappedAsync(response, MaxManifestBytes, cancellationToken)
+                .ConfigureAwait(false);
+            if (json is null)
+            {
+                RecordFailure(server.Url, "response exceeded the size cap");
+                return null;
+            }
+
+            var body = JsonSerializer.Deserialize<ManifestFetchResponse>(json);
+            RecordSuccess(server.Url);
+
+            if (body?.Manifest is null)
+            {
+                return null;
+            }
+
+            var tier = ParseTier(body.Match);
+            if (tier is null || tier < minimumTier)
+            {
+                _logger.LogDebug(
+                    "{Url} matched at {Tier}, below the configured minimum {Minimum}",
+                    server.Url,
+                    body.Match,
+                    minimumTier);
+                return null;
+            }
+
+            if (!ManifestValidator.TryValidate(body.Manifest, query.RuntimeSec, out var error))
+            {
+                // A manifest is never trusted merely because a server served it.
+                _logger.LogWarning("Rejected manifest from {Url}: {Error}", server.Url, error);
+                return null;
+            }
+
+            return new ManifestFetchOutcome
+            {
+                ServerUrl = server.Url,
+                Tier = tier.Value,
+                OffsetSec = body.OffsetSec,
+                Manifest = body.Manifest,
+            };
+        }
+        catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
+        {
+            throw;
+        }
+        catch (Exception ex) when (ex is HttpRequestException or TaskCanceledException or JsonException)
+        {
+            // A slow, unreachable or nonsense-returning server is skipped and
+            // backed off; it must never stall the sweep or fail the whole fetch.
+            RecordFailure(server.Url, ex.Message);
+            return null;
+        }
+    }
+
+    /// <summary>
+    /// Reads a response body, aborting once it exceeds <paramref name="cap"/>.
+    /// </summary>
+    /// <remarks>
+    /// Capped <b>while streaming</b> rather than after buffering: a hostile
+    /// server can declare any <c>Content-Length</c> it likes, so reading to
+    /// completion and then measuring is exactly the denial-of-service primitive
+    /// the cap exists to prevent.
+    /// </remarks>
+    private static async Task<string?> ReadCappedAsync(
+        HttpResponseMessage response,
+        long cap,
+        CancellationToken cancellationToken)
+    {
+        // The declared length is a cheap early rejection, never the enforcement.
+        if (response.Content.Headers.ContentLength is { } declared && declared > cap)
+        {
+            return null;
+        }
+
+        using var stream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
+        var buffer = new byte[8192];
+        using var accumulated = new System.IO.MemoryStream();
+
+        while (true)
+        {
+            var read = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
+            if (read == 0)
+            {
+                break;
+            }
+
+            if (accumulated.Length + read > cap)
+            {
+                return null;
+            }
+
+            await accumulated.WriteAsync(buffer.AsMemory(0, read), cancellationToken).ConfigureAwait(false);
+        }
+
+        return System.Text.Encoding.UTF8.GetString(accumulated.ToArray());
+    }
+
+    /// <summary>
+    /// Builds a fetch URL, or null when the server's URL is unusable.
+    /// </summary>
+    /// <remarks>
+    /// <b>HTTPS is required for anything that is not loopback.</b> A plaintext
+    /// community server would let any network intermediary rewrite actor
+    /// overlays, and the overlay is displayed to the user as fact.
+    /// </remarks>
+    /// <param name="server">The configured server.</param>
+    /// <param name="path">API path below <c>/api/v1/</c>.</param>
+    /// <param name="query">Identity and cut parameters.</param>
+    /// <returns>The URL to request, or null when the server URL is unusable.</returns>
+    internal static Uri? BuildUrl(ManifestServer server, string path, TitleQuery query)
+    {
+        ArgumentNullException.ThrowIfNull(server);
+        ArgumentNullException.ThrowIfNull(query);
+
+        if (!Uri.TryCreate(server.Url, UriKind.Absolute, out var baseUri))
+        {
+            return null;
+        }
+
+        if (!IsTransportAcceptable(baseUri))
+        {
+            return null;
+        }
+
+        var q = query.ToQueryString();
+        var trimmed = baseUri.AbsoluteUri.TrimEnd('/');
+        return Uri.TryCreate($"{trimmed}/api/v1/{path}?{q}", UriKind.Absolute, out var built)
+            ? built
+            : null;
+    }
+
+    /// <summary>
+    /// True when the URL may be used: HTTPS anywhere, or HTTP on loopback only.
+    /// </summary>
+    /// <param name="uri">The server base URL.</param>
+    /// <returns><c>true</c> when the transport is acceptable.</returns>
+    internal static bool IsTransportAcceptable(Uri uri)
+    {
+        ArgumentNullException.ThrowIfNull(uri);
+
+        if (uri.Scheme == Uri.UriSchemeHttps)
+        {
+            return true;
+        }
+
+        if (uri.Scheme != Uri.UriSchemeHttp)
+        {
+            return false;
+        }
+
+        // Loopback is exempt because there is no network path to intercept.
+        return uri.IsLoopback;
+    }
+
+    /// <summary>Parses a tier name the server reported.</summary>
+    /// <param name="tier">The tier string.</param>
+    /// <returns>The tier, or null when unrecognised.</returns>
+    internal static MatchTier? ParseTier(string? tier) => tier switch
+    {
+        // `exact` is deliberately absent: the file-hash tier is withdrawn on
+        // legal grounds (see MatchTier). A server cannot report it to us anyway,
+        // since we send no `video_hash` — and if one did, treating it as
+        // unrecognised means the manifest is declined rather than silently
+        // accepted under a tier this plugin has no policy for.
+        "audio" => MatchTier.Audio,
+        "runtime" => MatchTier.Runtime,
+        "loose" => MatchTier.Loose,
+        _ => null,
+    };
+
+    private void RecordSuccess(string url) => _health.TryRemove(url, out _);
+
+    private void RecordFailure(string url, string error)
+    {
+        var updated = _health.AddOrUpdate(
+            url,
+            _ => new ServerHealth { ConsecutiveFailures = 1, LastError = error, SkipUntil = DateTimeOffset.UtcNow + BaseBackoff },
+            (_, existing) =>
+            {
+                var failures = existing.ConsecutiveFailures + 1;
+                // Exponential, capped: a server that is down for a day should
+                // not be retried every minute for that whole day.
+                var delayTicks = Math.Min(
+                    BaseBackoff.Ticks * (long)Math.Pow(2, Math.Min(failures - 1, 6)),
+                    MaxBackoff.Ticks);
+                return new ServerHealth
+                {
+                    ConsecutiveFailures = failures,
+                    LastError = error,
+                    SkipUntil = DateTimeOffset.UtcNow + TimeSpan.FromTicks(delayTicks),
+                };
+            });
+
+        _logger.LogWarning(
+            "Server {Url} failed ({Failures} consecutive): {Error}. Skipping until {Until}",
+            url,
+            updated.ConsecutiveFailures,
+            error,
+            updated.SkipUntil);
+    }
+
+    /// <inheritdoc />
+    public void Dispose()
+    {
+        Dispose(true);
+        GC.SuppressFinalize(this);
+    }
+
+    /// <summary>
+    /// Releases the transport when this instance created it.
+    /// </summary>
+    /// <param name="disposing">Whether managed resources should be released.</param>
+    protected virtual void Dispose(bool disposing)
+    {
+        if (disposing && _ownsClient)
+        {
+            _http.Dispose();
+        }
+    }
+
+    private sealed class ServerHealth
+    {
+        public int ConsecutiveFailures { get; init; }
+
+        public string? LastError { get; init; }
+
+        public DateTimeOffset SkipUntil { get; init; }
+    }
+}

Jellyfin.Plugin.JRay/Services/ManifestFetchOutcome.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using Jellyfin.Plugin.JRay.Configuration;
+using Jellyfin.Plugin.JRay.Models;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>A manifest accepted from a server.</summary>
+public class ManifestFetchOutcome
+{
+    /// <summary>Gets or sets which server supplied it.</summary>
+    public string ServerUrl { get; set; } = string.Empty;
+
+    /// <summary>Gets or sets the cut-match tier achieved.</summary>
+    public MatchTier Tier { get; set; }
+
+    /// <summary>Gets or sets the offset the client must apply to every window.</summary>
+    public double OffsetSec { get; set; }
+
+    /// <summary>Gets or sets the manifest.</summary>
+    public Jmanifest? Manifest { get; set; }
+}

Jellyfin.Plugin.JRay/Services/ManifestValidator.cs

@@ -0,0 +1,256 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using Jellyfin.Plugin.JRay.Models;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>
+/// Re-validates a manifest received from a server.
+/// </summary>
+/// <remarks>
+/// <b>Every server is untrusted, including the pre-configured community one.</b>
+/// Everything the server specification guarantees is a property of a *correctly
+/// operated* server; pointing the plugin at an arbitrary URL inherits none of
+/// it. So the plugin re-applies client-side what the server applies on upload:
+/// unknown-shaped data rejected, identifiers format-checked, windows
+/// bounds-checked against the item's real runtime.
+/// <para>
+/// The honest framing for the configuration page is that adding a third-party
+/// server means trusting its operator not to serve you deliberately wrong actor
+/// data. These checks bound the damage to bad overlay content; they cannot make
+/// wrong data right.
+/// </para>
+/// </remarks>
+// TRACES: JR-027 | SR-004
+public static class ManifestValidator
+{
+    /// <summary>The exchange envelope version this plugin speaks (SR-003).</summary>
+    public const int SupportedJmanifestVersion = 2;
+
+    /// <summary>Server spec §6: no more than 500 actors in one manifest.</summary>
+    public const int MaxActors = 500;
+
+    /// <summary>Server spec §6: no more than 2000 windows for one actor.</summary>
+    public const int MaxScenesPerActor = 2000;
+
+    /// <summary>Server spec §6: no more than 20000 windows in total.</summary>
+    public const int MaxTotalScenes = 20000;
+
+    /// <summary>Server spec §6: names are capped at 200 characters.</summary>
+    public const int MaxNameLength = 200;
+
+    /// <summary>
+    /// Windows may exceed the measured runtime by this much before being
+    /// rejected, covering rounding and container-duration disagreement.
+    /// </summary>
+    public const double RuntimeToleranceSec = 5.0;
+
+    /// <summary>
+    /// Validates a manifest against the local item's measured runtime.
+    /// </summary>
+    /// <param name="manifest">The manifest as received.</param>
+    /// <param name="localRuntimeSec">
+    /// The runtime of the local file, or null when it is not known. Windows are
+    /// bounds-checked against it when it is available.
+    /// </param>
+    /// <param name="error">The first problem found, naming the offending field.</param>
+    /// <returns><c>true</c> when the manifest is safe to store.</returns>
+    public static bool TryValidate(Jmanifest? manifest, double? localRuntimeSec, out string error)
+    {
+        if (manifest is null)
+        {
+            error = "manifest: absent";
+            return false;
+        }
+
+        // An unknown envelope version is refused, never guessed at (JR-003).
+        // A server one version ahead may have changed the meaning of a field
+        // this plugin thinks it understands.
+        if (manifest.JmanifestVersion != SupportedJmanifestVersion)
+        {
+            error = string.Create(
+                CultureInfo.InvariantCulture,
+                $"jmanifest_version: unsupported version {manifest.JmanifestVersion}, expected {SupportedJmanifestVersion}");
+            return false;
+        }
+
+        if (manifest.Identity is null)
+        {
+            error = "identity: absent";
+            return false;
+        }
+
+        if (manifest.Cut is null || !IsSaneRuntime(manifest.Cut.RuntimeSec))
+        {
+            error = "cut.runtime_sec: absent or not a plausible duration";
+            return false;
+        }
+
+        if (manifest.Actors.Count == 0)
+        {
+            error = "actors: empty";
+            return false;
+        }
+
+        if (manifest.Actors.Count > MaxActors)
+        {
+            error = string.Create(
+                CultureInfo.InvariantCulture,
+                $"actors: more than {MaxActors} entries");
+            return false;
+        }
+
+        // Bounds are checked against the *local* file where known, because that
+        // is what the overlay will index into. A window past the end of the file
+        // is not merely useless, it is evidence the manifest is for another cut.
+        var limit = (localRuntimeSec ?? manifest.Cut.RuntimeSec) + RuntimeToleranceSec;
+
+        var total = 0;
+        var seenTmdb = new HashSet<string>(StringComparer.Ordinal);
+
+        for (var i = 0; i < manifest.Actors.Count; i++)
+        {
+            var actor = manifest.Actors[i];
+
+            if (actor.Name is { Length: > MaxNameLength })
+            {
+                error = string.Create(CultureInfo.InvariantCulture, $"actors[{i}].name: too long");
+                return false;
+            }
+
+            if (actor.Name is not null && ContainsControlCharacters(actor.Name))
+            {
+                error = string.Create(
+                    CultureInfo.InvariantCulture,
+                    $"actors[{i}].name: contains control characters");
+                return false;
+            }
+
+            if (actor.TmdbId is { Length: > 0 } tmdb)
+            {
+                if (!IsDigits(tmdb, 9))
+                {
+                    error = string.Create(
+                        CultureInfo.InvariantCulture,
+                        $"actors[{i}].tmdb_id: not a TMDB id");
+                    return false;
+                }
+
+                if (!seenTmdb.Add(tmdb))
+                {
+                    error = string.Create(
+                        CultureInfo.InvariantCulture,
+                        $"actors[{i}].tmdb_id: duplicate actor");
+                    return false;
+                }
+            }
+
+            if (actor.ImdbId is { Length: > 0 } imdb && !IsPersonImdbId(imdb))
+            {
+                error = string.Create(
+                    CultureInfo.InvariantCulture,
+                    $"actors[{i}].imdb_id: not an IMDB person id");
+                return false;
+            }
+
+            if (actor.Scenes.Count > MaxScenesPerActor)
+            {
+                error = string.Create(
+                    CultureInfo.InvariantCulture,
+                    $"actors[{i}].scenes: more than {MaxScenesPerActor} entries");
+                return false;
+            }
+
+            total += actor.Scenes.Count;
+            if (total > MaxTotalScenes)
+            {
+                error = string.Create(
+                    CultureInfo.InvariantCulture,
+                    $"actors: more than {MaxTotalScenes} windows in total");
+                return false;
+            }
+
+            for (var j = 0; j < actor.Scenes.Count; j++)
+            {
+                var scene = actor.Scenes[j];
+                if (!IsFinite(scene.Start) || !IsFinite(scene.End))
+                {
+                    error = string.Create(
+                        CultureInfo.InvariantCulture,
+                        $"actors[{i}].scenes[{j}]: non-finite value");
+                    return false;
+                }
+
+                if (scene.Start < 0 || scene.End < scene.Start)
+                {
+                    error = string.Create(
+                        CultureInfo.InvariantCulture,
+                        $"actors[{i}].scenes[{j}]: negative or inverted window");
+                    return false;
+                }
+
+                if (scene.End > limit)
+                {
+                    error = string.Create(
+                        CultureInfo.InvariantCulture,
+                        $"actors[{i}].scenes[{j}]: ends beyond the item's runtime");
+                    return false;
+                }
+
+                // A posterior outside [0, 1] is not a probability.
+                if (scene.Belief is { } b && (!IsFinite(b) || b < 0 || b > 1))
+                {
+                    error = string.Create(
+                        CultureInfo.InvariantCulture,
+                        $"actors[{i}].scenes[{j}].belief: outside [0, 1]");
+                    return false;
+                }
+            }
+        }
+
+        error = string.Empty;
+        return true;
+    }
+
+    private static bool IsSaneRuntime(double v) => IsFinite(v) && v > 0 && v < 200_000;
+
+    private static bool IsFinite(double v) => !double.IsNaN(v) && !double.IsInfinity(v);
+
+    private static bool IsDigits(string s, int maxLength) =>
+        s.Length > 0 && s.Length <= maxLength && s.All(char.IsAsciiDigit);
+
+    private static bool IsPersonImdbId(string s) =>
+        s.StartsWith("nm", StringComparison.Ordinal)
+        && (s.Length == 9 || s.Length == 10)
+        && s.AsSpan(2).ToString().All(char.IsAsciiDigit);
+
+    /// <summary>
+    /// Control characters are refused outright. The overlay renders names as
+    /// text nodes (JR-024), so markup is already inert, but a bidi override or a
+    /// zero-width joiner can still make a name display as something other than
+    /// what was stored.
+    /// </summary>
+    private static bool ContainsControlCharacters(string s)
+    {
+        foreach (var c in s)
+        {
+            if (char.IsControl(c))
+            {
+                return true;
+            }
+
+            // Zero-width and bidi-control codepoints.
+            if (c is >= '​' and <= '‏'
+                or >= '‪' and <= '‮'
+                or >= '⁦' and <= '⁩'
+                or '')
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}

Jellyfin.Plugin.JRay/Services/MediaPolicyStore.cs

@@ -0,0 +1,140 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services.Interfaces;
+using MediaBrowser.Common.Configuration;
+using Microsoft.Extensions.Logging;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>
+/// Persists the prioritise/ignore rules to a single JSON file under the
+/// plugin's configuration directory, and keeps an in-memory copy for fast
+/// reads. All access is synchronised so the work-discovery API and the
+/// config page can touch it concurrently.
+/// </summary>
+// TRACES: JR-016 | PR-003
+public sealed class MediaPolicyStore : IMediaPolicyStore
+{
+    private static readonly JsonSerializerOptions JsonOptions = new(JsonSerializerDefaults.Web)
+    {
+        WriteIndented = true,
+        Converters = { new JsonStringEnumConverter() }
+    };
+
+    private readonly IApplicationPaths _applicationPaths;
+    private readonly ILogger<MediaPolicyStore> _logger;
+    private readonly object _gate = new();
+    private List<MediaPolicyRule>? _rules;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="MediaPolicyStore"/> class.
+    /// </summary>
+    /// <param name="applicationPaths">The Jellyfin application paths.</param>
+    /// <param name="logger">The logger.</param>
+    public MediaPolicyStore(IApplicationPaths applicationPaths, ILogger<MediaPolicyStore> logger)
+    {
+        _applicationPaths = applicationPaths;
+        _logger = logger;
+    }
+
+    /// <inheritdoc />
+    public IReadOnlyList<MediaPolicyRule> GetRules()
+    {
+        lock (_gate)
+        {
+            return EnsureLoaded().ToList();
+        }
+    }
+
+    /// <inheritdoc />
+    public void SetRule(MediaPolicyRule rule)
+    {
+        ArgumentNullException.ThrowIfNull(rule);
+
+        lock (_gate)
+        {
+            var rules = EnsureLoaded();
+            rules.RemoveAll(r => r.Scope == rule.Scope && ValueEquals(r.Value, rule.Value));
+            rules.Add(rule);
+            Save(rules);
+        }
+    }
+
+    /// <inheritdoc />
+    public bool RemoveRule(PolicyScope scope, string value)
+    {
+        lock (_gate)
+        {
+            var rules = EnsureLoaded();
+            var removed = rules.RemoveAll(r => r.Scope == scope && ValueEquals(r.Value, value));
+            if (removed > 0)
+            {
+                Save(rules);
+                return true;
+            }
+
+            return false;
+        }
+    }
+
+    private static bool ValueEquals(string a, string b)
+    {
+        // Genre names are matched case-insensitively; ids happen to be
+        // case-insensitive too (GUID strings), so a single comparison suffices.
+        return string.Equals(a, b, StringComparison.OrdinalIgnoreCase);
+    }
+
+    private List<MediaPolicyRule> EnsureLoaded()
+    {
+        if (_rules is not null)
+        {
+            return _rules;
+        }
+
+        var path = GetPath();
+        if (!File.Exists(path))
+        {
+            _rules = new List<MediaPolicyRule>();
+            return _rules;
+        }
+
+        try
+        {
+            using var stream = File.OpenRead(path);
+            _rules = JsonSerializer.Deserialize<List<MediaPolicyRule>>(stream, JsonOptions)
+                     ?? new List<MediaPolicyRule>();
+        }
+        catch (Exception ex) when (ex is IOException or JsonException)
+        {
+            _logger.LogWarning(ex, "JRay: failed to read media policy file {Path}; starting empty", path);
+            _rules = new List<MediaPolicyRule>();
+        }
+
+        return _rules;
+    }
+
+    private void Save(List<MediaPolicyRule> rules)
+    {
+        var path = GetPath();
+        var directory = Path.GetDirectoryName(path) ?? throw new InvalidOperationException("Media policy path has no directory.");
+        Directory.CreateDirectory(directory);
+
+        var tempPath = path + ".tmp";
+        using (var stream = File.Create(tempPath))
+        {
+            JsonSerializer.Serialize(stream, rules, JsonOptions);
+        }
+
+        File.Move(tempPath, path, overwrite: true);
+    }
+
+    private string GetPath()
+    {
+        return Path.Combine(_applicationPaths.PluginConfigurationsPath, "JRay", "policy.json");
+    }
+}

Jellyfin.Plugin.JRay/Services/PolicyResolver.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using Jellyfin.Plugin.JRay.Models;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>
+/// Resolves the effective prioritise/ignore action for an item from the
+/// configured rules. More specific scopes win: an Item rule overrides a
+/// Series rule, which overrides a Genre rule. Because a given scope+value can
+/// hold only one action, the only conflicts possible are across scopes, and
+/// specificity resolves those.
+/// </summary>
+// TRACES: JR-016 | PR-003
+public static class PolicyResolver
+{
+    /// <summary>
+    /// Computes the effective action for an item, or <c>null</c> if no rule matches.
+    /// </summary>
+    /// <param name="rules">The configured rules.</param>
+    /// <param name="itemId">The item's id.</param>
+    /// <param name="seriesId">The item's series id, or <see cref="Guid.Empty"/> if it is not an episode.</param>
+    /// <param name="genres">The item's genres.</param>
+    /// <returns>The effective <see cref="PolicyAction"/>, or <c>null</c> when unruled.</returns>
+    public static PolicyAction? Resolve(
+        IReadOnlyList<MediaPolicyRule> rules,
+        Guid itemId,
+        Guid seriesId,
+        IReadOnlyList<string> genres)
+    {
+        ArgumentNullException.ThrowIfNull(rules);
+
+        PolicyAction? itemAction = null;
+        PolicyAction? seriesAction = null;
+        PolicyAction? genreAction = null;
+
+        var itemIdStr = itemId.ToString("D");
+        var seriesIdStr = seriesId == Guid.Empty ? null : seriesId.ToString("D");
+
+        foreach (var rule in rules)
+        {
+            switch (rule.Scope)
+            {
+                case PolicyScope.Item:
+                    if (string.Equals(rule.Value, itemIdStr, StringComparison.OrdinalIgnoreCase))
+                    {
+                        itemAction = rule.Action;
+                    }
+
+                    break;
+
+                case PolicyScope.Series:
+                    if (seriesIdStr is not null && string.Equals(rule.Value, seriesIdStr, StringComparison.OrdinalIgnoreCase))
+                    {
+                        seriesAction = rule.Action;
+                    }
+
+                    break;
+
+                case PolicyScope.Genre:
+                    if (genres is not null && MatchesGenre(genres, rule.Value))
+                    {
+                        genreAction = rule.Action;
+                    }
+
+                    break;
+            }
+        }
+
+        return itemAction ?? seriesAction ?? genreAction;
+    }
+
+    private static bool MatchesGenre(IReadOnlyList<string> genres, string value)
+    {
+        for (var i = 0; i < genres.Count; i++)
+        {
+            if (string.Equals(genres[i], value, StringComparison.OrdinalIgnoreCase))
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}

Jellyfin.Plugin.JRay/Services/PresenceLookup.cs

@@ -0,0 +1,119 @@
+using System.Collections.Generic;
+using Jellyfin.Plugin.JRay.Models;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>
+/// Answers "which actors are in the scene at time <c>t</c>" from a truth file.
+/// </summary>
+/// <remarks>
+/// This is the unit that decides presence, so the scene-scoped semantics live
+/// here rather than being spread through the controller.
+///
+/// <para>
+/// <b>A window is a claim about scene membership, not a recognition event.</b>
+/// An actor who turns away, is occluded, or is off-camera while the shot cuts to
+/// whoever they are speaking to is still present. Two windows mean a genuine
+/// departure and return, not a break in detection — so this code reads windows
+/// exactly as given and never merges, splits, trims, or reorders them.
+/// </para>
+/// <para>
+/// Bounds are inclusive at both ends, matching the format's definition. That
+/// makes adjacent windows such as <c>[0,10]</c> and <c>[10,20]</c> both contain
+/// <c>t = 10</c>; reporting the actor present once is correct, and is not a
+/// reason to merge the windows.
+/// </para>
+/// </remarks>
+// TRACES: JR-004, JR-005, JR-006 | SR-002
+public static class PresenceLookup
+{
+    /// <summary>
+    /// Determines whether an actor is present in the scene at <paramref name="t"/>.
+    /// </summary>
+    /// <param name="actor">The actor entry from a truth file.</param>
+    /// <param name="t">The timestamp, in seconds.</param>
+    /// <returns><c>true</c> when any window contains <paramref name="t"/>.</returns>
+    public static bool IsPresentAt(TruthActor actor, double t)
+    {
+        if (actor is null)
+        {
+            return false;
+        }
+
+        // A full scan, deliberately: windows may be numerous, but correctness
+        // must not depend on the producer having honoured the sortedness
+        // guarantee. An early exit on `start > t` would be faster and would
+        // silently under-report the moment one file arrived out of order —
+        // trading a correctness risk for a saving that does not matter at this
+        // scale (see JR-006).
+        foreach (var window in actor.Scenes)
+        {
+            if (window.Length == 2 && window[0] <= t && t <= window[1])
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /// <summary>
+    /// Lists the actors present in the scene at <paramref name="t"/>, in the
+    /// order the truth file lists them.
+    /// </summary>
+    /// <param name="truth">The truth file.</param>
+    /// <param name="t">The timestamp, in seconds.</param>
+    /// <returns>The actors whose windows contain <paramref name="t"/>.</returns>
+    public static IEnumerable<TruthActor> ActorsPresentAt(TruthFile truth, double t)
+    {
+        if (truth is null)
+        {
+            yield break;
+        }
+
+        foreach (var actor in truth.Actors)
+        {
+            if (IsPresentAt(actor, t))
+            {
+                yield return actor;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Determines whether an actor's windows are sorted by start time, as the
+    /// truth-file format requires of producers.
+    /// </summary>
+    /// <remarks>
+    /// Presence lookup does not depend on this — it is a diagnostic. A file that
+    /// fails it is still read correctly, but it signals a producer bug worth
+    /// surfacing rather than absorbing silently.
+    /// </remarks>
+    /// <param name="actor">The actor entry from a truth file.</param>
+    /// <returns><c>true</c> when every window starts at or after its predecessor.</returns>
+    public static bool WindowsAreSorted(TruthActor actor)
+    {
+        if (actor is null)
+        {
+            return true;
+        }
+
+        double previousStart = double.NegativeInfinity;
+        foreach (var window in actor.Scenes)
+        {
+            if (window.Length != 2)
+            {
+                continue;
+            }
+
+            if (window[0] < previousStart)
+            {
+                return false;
+            }
+
+            previousStart = window[0];
+        }
+
+        return true;
+    }
+}

Jellyfin.Plugin.JRay/Services/ServerStatus.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using Jellyfin.Plugin.JRay.Configuration;
+using Jellyfin.Plugin.JRay.Models;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>Per-server reachability, for the configuration page.</summary>
+public class ServerStatus
+{
+    /// <summary>Gets or sets the server's base URL.</summary>
+    public string Url { get; set; } = string.Empty;
+
+    /// <summary>Gets or sets the display name.</summary>
+    public string Name { get; set; } = string.Empty;
+
+    /// <summary>Gets or sets a value indicating whether the server is enabled.</summary>
+    public bool Enabled { get; set; }
+
+    /// <summary>Gets or sets a value indicating whether the last attempt succeeded.</summary>
+    public bool Reachable { get; set; }
+
+    /// <summary>Gets or sets the last error seen, if any.</summary>
+    public string? LastError { get; set; }
+
+    /// <summary>Gets or sets when this server will next be tried.</summary>
+    public DateTimeOffset? SkippedUntil { get; set; }
+}

Jellyfin.Plugin.JRay/Services/TitleQuery.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using Jellyfin.Plugin.JRay.Configuration;
+using Jellyfin.Plugin.JRay.Models;
+
+namespace Jellyfin.Plugin.JRay.Services;
+
+/// <summary>Identity and cut parameters for a fetch.</summary>
+public class TitleQuery
+{
+    /// <summary>Gets or sets the movie's TMDB id.</summary>
+    public string? TmdbId { get; set; }
+
+    /// <summary>Gets or sets the movie's IMDB id.</summary>
+    public string? ImdbId { get; set; }
+
+    /// <summary>Gets or sets the series TMDB id, for an episode.</summary>
+    public string? SeriesTmdbId { get; set; }
+
+    /// <summary>Gets or sets the season number, for an episode.</summary>
+    public int? Season { get; set; }
+
+    /// <summary>Gets or sets the episode number, for an episode.</summary>
+    public int? Episode { get; set; }
+
+    /// <summary>Gets or sets the local file's measured runtime, in seconds.</summary>
+    public double? RuntimeSec { get; set; }
+
+    /// <summary>Renders the query parameters the server expects.</summary>
+    /// <remarks>
+    /// There is deliberately no <c>video_hash</c> parameter. The file-hash tier
+    /// is withdrawn on legal grounds (see <see cref="MatchTier"/>), and omitting
+    /// the field here is what makes that structural: there is nothing to send,
+    /// so no future caller can start sending one by setting a property.
+    /// </remarks>
+    /// <returns>An escaped query string, without the leading '?'.</returns>
+    public string ToQueryString()
+    {
+        var parts = new List<string>();
+        void Add(string key, string? value)
+        {
+            if (!string.IsNullOrEmpty(value))
+            {
+                parts.Add($"{key}={Uri.EscapeDataString(value)}");
+            }
+        }
+
+        Add("tmdb_id", TmdbId);
+        Add("imdb_id", ImdbId);
+        Add("series_tmdb_id", SeriesTmdbId);
+        Add("season", Season?.ToString(CultureInfo.InvariantCulture));
+        Add("episode", Episode?.ToString(CultureInfo.InvariantCulture));
+        Add("runtime_sec", RuntimeSec?.ToString("0.###", CultureInfo.InvariantCulture));
+        return string.Join('&', parts);
+    }
+}

Jellyfin.Plugin.JRay/Services/TruthDataService.cs

@@ -16,6 +16,13 @@ namespace Jellyfin.Plugin.JRay.Services;
 /// item's source file, and caches the parsed result for a configurable
 /// duration.
 /// </summary>
+/// <remarks>
+/// Managed truth — pushed by a worker, or fetched from a manifest server —
+/// takes precedence over a sidecar file. Storing fetched manifests through the
+/// managed store is what keeps this a two-way rule rather than a three-way one,
+/// so the read path never learns that the exchange exists.
+/// </remarks>
+// TRACES: JR-008, JR-010, JR-011 | PR-001
 public sealed class TruthDataService : ITruthDataService
 {
     private static readonly JsonSerializerOptions JsonOptions = new(JsonSerializerDefaults.Web);
@@ -86,6 +93,34 @@ public sealed class TruthDataService : ITruthDataService
         }
     }
 
+    /// <inheritdoc />
+    public TruthProvenance? GetProvenance(Guid itemId)
+    {
+        // Managed truth wins, exactly as in GetTruthAsync -- resolving
+        // precedence twice by different rules is how the two would drift.
+        var managed = _managedTruthStore.LoadProvenance(itemId);
+        if (managed is not null)
+        {
+            return managed;
+        }
+
+        var item = _libraryManager.GetItemById(itemId);
+        if (item is null || string.IsNullOrEmpty(item.Path))
+        {
+            return null;
+        }
+
+        var sidecarPath = GetSidecarPath(item.Path);
+        if (!File.Exists(sidecarPath))
+        {
+            return null;
+        }
+
+        // A sidecar records nothing about itself, so its provenance is derived:
+        // it is local, and its timestamp is the file's own.
+        return TruthProvenance.Local(TruthSource.Sidecar, File.GetLastWriteTimeUtc(sidecarPath));
+    }
+
     /// <inheritdoc />
     public void Invalidate(Guid itemId)
     {

Jellyfin.Plugin.JRay/Services/WebClientPatchService.cs

@@ -6,26 +6,40 @@ using Microsoft.Extensions.Logging;
 namespace Jellyfin.Plugin.JRay.Services;
 
 /// <summary>
-/// Injects (or removes) a script tag in the web client's <c>index.html</c>
+/// Removes the pause-overlay script tag that an earlier version of JRay
-/// that loads JRay's pause-overlay script. This follows the pattern used by
+/// injected into the web client's <c>index.html</c> on disk.
-/// other Jellyfin plugins (e.g. Intro Skipper) since there is no official
-/// plugin hook for player-overlay UI.
 /// </summary>
+/// <remarks>
+/// <b>This class cannot inject.</b> JRay reaches the web client only through
+/// <see cref="FileTransformationRegistration"/>, which rewrites
+/// <c>index.html</c> as it is served. Patching the file on disk was removed
+/// rather than left switched off: the patch outlives an uninstall, a web-client
+/// upgrade discards it silently, and it races any other plugin patching the same
+/// file. An unreachable write path is also the one nobody runs, which is the one
+/// a later refactor re-enables by accident.
+///
+/// Removal remains because users upgrading from a version that did patch the
+/// file must not be left with a stale injection pointing at endpoints that have
+/// since changed. It keys on JRay's own <c>&lt;!-- jray-overlay --&gt;</c>
+/// marker, so it is unambiguous and touches nothing another plugin added.
+/// </remarks>
+// TRACES: JR-021, JR-022 | PR-004
 public static class WebClientPatchService
 {
     private const string Marker = "<!-- jray-overlay -->";
     private const string ScriptTag = "<script defer src=\"/Plugins/JRay/ClientScript\"></script>";
-    private const string Injected = ScriptTag + Marker + "\n</body>";
 
     /// <summary>
-    /// Ensures the web client's index.html either has or does not have the
+    /// Removes a legacy on-disk overlay injection, if one is present. Safe to
-    /// JRay overlay script injected, matching <paramref name="enableOverlay"/>.
+    /// call on every startup: it is a no-op once the marker is gone.
     /// </summary>
     /// <param name="applicationPaths">The Jellyfin application paths.</param>
-    /// <param name="enableOverlay">Whether the overlay script should be present.</param>
     /// <param name="logger">The logger.</param>
-    public static void Apply(IApplicationPaths applicationPaths, bool enableOverlay, ILogger logger)
+    public static void RemoveLegacyPatch(IApplicationPaths applicationPaths, ILogger logger)
     {
+        ArgumentNullException.ThrowIfNull(applicationPaths);
+        ArgumentNullException.ThrowIfNull(logger);
+
         var indexPath = Path.Combine(applicationPaths.WebPath, "index.html");
 
         try
@@ -37,36 +51,38 @@ public static class WebClientPatchService
             }
 
             var html = File.ReadAllText(indexPath);
-            var hasMarker = html.Contains(Marker, StringComparison.Ordinal);
+            if (!html.Contains(Marker, StringComparison.Ordinal))
+            {
+                return;
+            }
 
-            if (enableOverlay && !hasMarker)
+            var cleaned = RemoveInjection(html);
-            {
+            File.WriteAllText(indexPath, cleaned);
-                var patched = ReplaceLast(html, "</body>", Injected);
+            logger.LogInformation(
-                File.WriteAllText(indexPath, patched);
+                "JRay: removed a pause-overlay script left in {Path} by an earlier version. "
-                logger.LogInformation("JRay: injected pause-overlay script into {Path}", indexPath);
+                + "JRay no longer modifies this file; the overlay is served through File Transformation.",
-            }
+                indexPath);
-            else if (!enableOverlay && hasMarker)
-            {
-                var patched = html.Replace(ScriptTag + Marker + "\n", string.Empty, StringComparison.Ordinal)
-                    .Replace(ScriptTag + Marker, string.Empty, StringComparison.Ordinal);
-                File.WriteAllText(indexPath, patched);
-                logger.LogInformation("JRay: removed pause-overlay script from {Path}", indexPath);
-            }
         }
         catch (Exception ex) when (ex is IOException or UnauthorizedAccessException)
         {
-            logger.LogWarning(ex, "JRay: failed to patch web client index.html at {Path}", indexPath);
+            logger.LogWarning(ex, "JRay: failed to remove the legacy overlay patch from {Path}", indexPath);
         }
     }
 
-    private static string ReplaceLast(string source, string find, string replace)
+    /// <summary>
+    /// Strips the marked script tag from the document.
+    /// </summary>
+    /// <param name="html">The document contents.</param>
+    /// <returns>The contents with JRay's injection removed.</returns>
+    internal static string RemoveInjection(string html)
     {
-        var index = source.LastIndexOf(find, StringComparison.Ordinal);
+        ArgumentNullException.ThrowIfNull(html);
-        if (index < 0)
-        {
-            return source;
-        }
 
-        return source[..index] + replace + source[(index + find.Length)..];
+        // The trailing newline is stripped with the tag when present, so removing
+        // a patch restores the document byte-for-byte rather than leaving a blank
+        // line that accumulates across upgrades.
+        return html
+            .Replace(ScriptTag + Marker + "\n", string.Empty, StringComparison.Ordinal)
+            .Replace(ScriptTag + Marker, string.Empty, StringComparison.Ordinal);
     }
 }

Jellyfin.Plugin.JRay/Web/jray-overlay.js

@@ -1,8 +1,48 @@
+/*
+ * JRay pause overlay: lists the cast of the scene the viewer paused in.
+ *
+ * Presence is scene-scoped. An actor who has turned away, is occluded, or is
+ * off-camera during a reverse shot is still in the scene, so this must not be
+ * presented as "who is visible right now" — that is a different, and weaker,
+ * claim than the data makes.
+ *
+ * Every server-supplied string is written with textContent, never innerHTML.
+ * With the manifest exchange these strings may originate from a third-party
+ * server, and this is the one control that holds even if every other check is
+ * bypassed.
+ *
+ * TRACES: JR-005, JR-020, JR-024 | SR-002, SR-004
+ */
 (function () {
     'use strict';
 
     var POLL_INTERVAL_MS = 1000;
+    var OVERVIEW_MAX_LENGTH = 160;
     var overlayEl = null;
+    var detailEl = null;
+    var personCache = {};
+
+    function truncate(text, maxLength) {
+        if (text.length <= maxLength) {
+            return text;
+        }
+
+        return text.slice(0, maxLength).trim() + '…';
+    }
+
+    function getPerson(jellyfinId) {
+        if (personCache[jellyfinId]) {
+            return personCache[jellyfinId];
+        }
+
+        var promise = window.ApiClient.getItem(window.ApiClient.getCurrentUserId(), jellyfinId)
+            .catch(function () {
+                return null;
+            });
+
+        personCache[jellyfinId] = promise;
+        return promise;
+    }
 
     function getNowPlaying() {
         if (!window.ApiClient) {
@@ -23,7 +63,18 @@
         });
     }
 
+    function removeDetail() {
+        if (detailEl && detailEl.parentNode) {
+            detailEl.parentNode.removeChild(detailEl);
+        }
+
+        detailEl = null;
+        document.removeEventListener('keydown', onDetailKeydown, true);
+    }
+
     function removeOverlay() {
+        removeDetail();
+
         if (overlayEl && overlayEl.parentNode) {
             overlayEl.parentNode.removeChild(overlayEl);
         }
@@ -31,6 +82,119 @@
         overlayEl = null;
     }
 
+    function onDetailKeydown(event) {
+        // Back button on TV remotes / keyboards maps to Escape / Backspace.
+        if (event.key === 'Escape' || event.key === 'Backspace' || event.keyCode === 27 || event.keyCode === 8) {
+            event.stopPropagation();
+            event.preventDefault();
+            removeDetail();
+        }
+    }
+
+    // A larger, closeable "pop-up" card shown over the video when an actor is
+    // clicked. It stays inside the player so playback position is never lost.
+    function showDetail(container, actor, person) {
+        removeDetail();
+
+        detailEl = document.createElement('div');
+        detailEl.className = 'jrayActorDetail';
+        detailEl.style.position = 'absolute';
+        detailEl.style.top = '0';
+        detailEl.style.left = '0';
+        detailEl.style.right = '0';
+        detailEl.style.bottom = '0';
+        detailEl.style.zIndex = '10000';
+        detailEl.style.display = 'flex';
+        detailEl.style.alignItems = 'center';
+        detailEl.style.justifyContent = 'center';
+        detailEl.style.background = 'rgba(0, 0, 0, 0.6)';
+        detailEl.style.pointerEvents = 'auto';
+
+        // Click on the dimmed backdrop closes the pop-up.
+        detailEl.addEventListener('click', function (event) {
+            if (event.target === detailEl) {
+                removeDetail();
+            }
+        });
+
+        var panel = document.createElement('div');
+        panel.style.position = 'relative';
+        panel.style.display = 'flex';
+        panel.style.gap = '24px';
+        panel.style.maxWidth = '720px';
+        panel.style.width = '80%';
+        panel.style.maxHeight = '80%';
+        panel.style.overflowY = 'auto';
+        panel.style.background = 'rgba(20, 20, 20, 0.96)';
+        panel.style.color = '#fff';
+        panel.style.padding = '24px';
+        panel.style.borderRadius = '10px';
+        panel.style.boxShadow = '0 8px 32px rgba(0, 0, 0, 0.6)';
+
+        if (person && person.ImageTags && person.ImageTags.Primary) {
+            var img = document.createElement('img');
+            img.src = window.ApiClient.getImageUrl(actor.jellyfin_id, {
+                type: 'Primary',
+                maxHeight: 400,
+                tag: person.ImageTags.Primary
+            });
+            img.style.height = '300px';
+            img.style.width = 'auto';
+            img.style.borderRadius = '8px';
+            img.style.objectFit = 'cover';
+            img.style.flexShrink = '0';
+            panel.appendChild(img);
+        }
+
+        var text = document.createElement('div');
+        text.style.flex = '1';
+
+        var name = document.createElement('div');
+        name.style.fontWeight = 'bold';
+        name.style.fontSize = '24px';
+        name.style.marginBottom = '12px';
+        name.textContent = actor.name;
+        text.appendChild(name);
+
+        if (person && person.Overview) {
+            var overview = document.createElement('div');
+            overview.style.fontSize = '15px';
+            overview.style.lineHeight = '1.5';
+            overview.style.opacity = '0.9';
+            overview.textContent = person.Overview;
+            text.appendChild(overview);
+        }
+
+        panel.appendChild(text);
+
+        var closeBtn = document.createElement('button');
+        closeBtn.type = 'button';
+        closeBtn.setAttribute('aria-label', 'Close');
+        closeBtn.textContent = '✕';
+        closeBtn.style.position = 'absolute';
+        closeBtn.style.top = '8px';
+        closeBtn.style.right = '8px';
+        closeBtn.style.width = '32px';
+        closeBtn.style.height = '32px';
+        closeBtn.style.border = 'none';
+        closeBtn.style.borderRadius = '50%';
+        closeBtn.style.background = 'rgba(255, 255, 255, 0.15)';
+        closeBtn.style.color = '#fff';
+        closeBtn.style.fontSize = '16px';
+        closeBtn.style.cursor = 'pointer';
+        closeBtn.addEventListener('click', function (event) {
+            event.stopPropagation();
+            removeDetail();
+        });
+        panel.appendChild(closeBtn);
+
+        detailEl.appendChild(panel);
+        container.appendChild(detailEl);
+
+        // Back button (Escape/Backspace) closes the pop-up first.
+        document.addEventListener('keydown', onDetailKeydown, true);
+    }
+
     function showOverlay(video, actors) {
         removeOverlay();
 
@@ -54,15 +218,87 @@
         overlayEl.style.gap = '12px';
         overlayEl.style.pointerEvents = 'none';
 
+        // "In this scene", not "on screen now". Presence is scene-scoped, so
+        // this list includes people the camera is not currently pointing at —
+        // without the heading a viewer reads a paused frame and concludes the
+        // overlay is wrong whenever someone is off-camera mid-conversation.
+        var heading = document.createElement('div');
+        heading.className = 'jrayOverlayHeading';
+        heading.textContent = 'In this scene';
+        heading.style.width = '100%';
+        heading.style.color = '#fff';
+        heading.style.opacity = '0.75';
+        heading.style.fontSize = '13px';
+        heading.style.textTransform = 'uppercase';
+        heading.style.letterSpacing = '0.08em';
+        heading.style.textShadow = '0 1px 3px rgba(0,0,0,0.9)';
+        overlayEl.appendChild(heading);
+
         actors.forEach(function (actor) {
             var card = document.createElement('div');
-            card.style.background = 'rgba(0, 0, 0, 0.7)';
+            card.className = 'jrayActorCard';
+            card.style.background = 'rgba(0, 0, 0, 0.75)';
             card.style.color = '#fff';
-            card.style.padding = '6px 12px';
+            card.style.padding = '8px 12px';
-            card.style.borderRadius = '4px';
+            card.style.borderRadius = '6px';
-            card.style.fontSize = '14px';
+            card.style.display = 'flex';
-            card.textContent = actor.name;
+            card.style.alignItems = 'center';
+            card.style.gap = '10px';
+            card.style.maxWidth = '360px';
+
+            var textBlock = document.createElement('div');
+
+            var name = document.createElement('div');
+            name.style.fontWeight = 'bold';
+            name.style.fontSize = '16px';
+            name.textContent = actor.name;
+            textBlock.appendChild(name);
+
+            card.appendChild(textBlock);
             overlayEl.appendChild(card);
+
+            if (!actor.jellyfin_id || !window.ApiClient) {
+                return;
+            }
+
+            card.style.pointerEvents = 'auto';
+            card.style.cursor = 'pointer';
+
+            getPerson(actor.jellyfin_id).then(function (person) {
+                if (!person || !overlayEl || !overlayEl.contains(card)) {
+                    return;
+                }
+
+                // Clicking the card opens the in-player detail pop-up rather than
+                // navigating away — this keeps the current playback position.
+                card.addEventListener('click', function (event) {
+                    event.stopPropagation();
+                    showDetail(container, actor, person);
+                });
+
+                if (person.ImageTags && person.ImageTags.Primary) {
+                    var img = document.createElement('img');
+                    img.src = window.ApiClient.getImageUrl(actor.jellyfin_id, {
+                        type: 'Primary',
+                        maxHeight: 120,
+                        tag: person.ImageTags.Primary
+                    });
+                    img.style.height = '120px';
+                    img.style.width = 'auto';
+                    img.style.borderRadius = '4px';
+                    img.style.objectFit = 'cover';
+                    card.insertBefore(img, textBlock);
+                }
+
+                if (person.Overview) {
+                    var overview = document.createElement('div');
+                    overview.style.fontSize = '12px';
+                    overview.style.opacity = '0.85';
+                    overview.style.marginTop = '4px';
+                    overview.textContent = truncate(person.Overview, OVERVIEW_MAX_LENGTH);
+                    textBlock.appendChild(overview);
+                }
+            });
         });
 
         container.appendChild(overlayEl);

README.md

@@ -1,6 +1,19 @@
 # JRay
 
-JRay reads "truth" files produced offline by the scene-actor-extraction pipeline (face detection + recognition) and exposes an API to query which actors are visible on screen at a given timestamp in a movie, for building an actor-overlay (Jellyfin "X-Ray") style feature.
+A Jellyfin plugin that brings an actor-overlay (think Amazon "X-Ray") feature to your media: pause a movie and JRay shows you which actors are in the scene you paused in.
+
+JRay reads "truth" files produced offline by the
+[scene-actor-extraction](https://github.com/dtourolle/scene-actor-extraction)
+pipeline (face detection + recognition) and exposes an API to query which actors
+are present in the scene at a given timestamp. A small overlay, injected into the Jellyfin web
+client, displays the result when you pause playback.
+
+## Status
+
+**Alpha** — JRay works end to end (sidecar truth files, remote truth push, and the
+pause overlay) but is early software and the truth-file schema may still change.
+The overlay relies on patching the web client's `index.html`, which is inherently
+a little fragile across Jellyfin versions (see [Important Notes](#important-notes)).
 
 ## Quick Install
 
@@ -10,422 +23,394 @@ Add this repository URL in Jellyfin (Dashboard → Plugins → Repositories):
 https://gitea.tourolle.paris/dtourolle/jRay/raw/branch/master/manifest.json
 ```
 
-Then install "JRay" from the plugin catalog.
+Then install "JRay" from the plugin catalog and restart Jellyfin.
 
----
+### Required for the overlay: File Transformation
 
-# So you want to make a Jellyfin plugin
+JRay's pause overlay needs a script tag in the web client's `index.html`.
+Install [File Transformation](https://github.com/IAmParadox27/jellyfin-plugin-file-transformation)
+(repository `https://www.iamparadox.dev/jellyfin/plugins/manifest.json`) **before**
+installing JRay. It rewrites the page as it is served, so the file on disk is
+never touched — that survives server upgrades and coexists with other plugins
+patching the same file.
 
-Awesome! This guide is for you. Jellyfin plugins are written using the dotnet standard framework. What that means is you can write them in any language that implements the CLI or the DLI and can compile to net8.0. The examples on this page are in C# because that is what most of Jellyfin is written in, but F#, Visual Basic, and IronPython should all be compatible once compiled.
+**There is no fallback.** JRay never edits `index.html` on disk: a patch there
+outlives an uninstall, is silently discarded by a web-client upgrade, and races
+any other plugin touching the file. Without File Transformation the pause
+overlay is simply disabled — every other JRay feature works normally, and the
+plugin's configuration page tells you what is missing and how to install it.
 
-## 0. Things you need to get started
+Upgrading from an older JRay that did patch `index.html`? It removes its own
+patch on startup, so there is nothing to clean up by hand. See
+[SPEC.md](SPEC.md) JR-021/JR-022.
 
-- [Dotnet SDK 9.0](https://dotnet.microsoft.com/en-us/download/dotnet)
+## Features
 
-- An editor of your choice. Some free choices are:
+- **Pause overlay** — pause a movie or episode in the web client and see the
+  actors in the current scene, without leaving the player.
+- **Sidecar truth files** — drop a `Movie.jray.json` next to `Movie.mkv` and JRay
+  picks it up automatically (suffix configurable).
+- **Remote truth push** — for servers that can't run the extraction pipeline
+  locally, a remote worker can `PUT` truth data over HTTP. Managed (pushed) data
+  takes precedence over sidecar files.
+- **Work discovery API** — a remote worker can poll for a random batch of library
+  items that still need processing, so the backlog spreads naturally across
+  workers without server-side task tracking.
+- **Prioritise / ignore rules** — steer that backlog by genre, series, or
+  individual item: ignore what you never want extracted (e.g. anime), or push a
+  series to the front of the queue.
+- **Coverage overview** — see at a glance how much of your library has actor
+  data, broken down by genre and by media type (film vs TV).
+- **Extensible "context at time t" envelope** — the per-timestamp response is
+  designed to grow (locations, trivia, …) without breaking existing clients.
+- **In-memory caching** — loaded truth files are cached with a configurable TTL.
+- **Toggleable overlay** — disabling the overlay also cleanly removes the injected
+  script from the web client.
 
-   [Visual Studio Code](https://code.visualstudio.com)
+## How It Works
-
-   [Visual Studio Community Edition](https://visualstudio.microsoft.com/downloads)
-
-   [Mono Develop](https://www.monodevelop.com)
-
-## 0.5. Quickstarts
-
-We have a number of quickstart options available to speed you along the way.
-
-- [Download the Example Plugin Project](https://github.com/jellyfin/jellyfin-plugin-template/tree/master/Jellyfin.Plugin.Template) from this repository, open it in your IDE and go to [step 3](https://github.com/jellyfin/jellyfin-plugin-template#3-customize-plugin-information)
-
-- Install our dotnet template by [downloading the dotnet-template/content folder from this repo](https://github.com/jellyfin/jellyfin-plugin-template/tree/master/dotnet-template/content) or off of Nuget (Coming soon)
 
 ```
-   dotnet new -i /path/to/templatefolder
+  scene-actor-extraction            Jellyfin server                 web client
+  (offline pipeline)                                                (browser)
+ ┌────────────────────┐           ┌──────────────────┐           ┌────────────┐
+ │ face detection +   │  truth    │   JRay plugin    │  jray?t=  │  pause      │
+ │ recognition        │ ───────►  │ - sidecar reader │ ◄───────  │  overlay    │
+ │ result_sink_node   │  file     │ - managed store  │  actors   │  script     │
+ └────────────────────┘           │ - REST API       │ ───────►  └────────────┘
+        │ PUT /Truth (remote)     │ - web patcher    │
+        └────────────────────────►└──────────────────┘
 ```
 
-- Run this command then skip to step 4
+1. The extraction pipeline analyses a film offline and emits a **truth file**
+   listing each actor and the time windows they are present in the film.
+2. JRay loads that truth file either from a **sidecar** next to the media
+   (`Movie.jray.json`) or from a **managed store** populated via the push API.
+3. On startup JRay injects a small `<script>` into the web client's `index.html`.
+   When you pause, the script calls JRay for the current item and timestamp and
+   renders the scene's cast as an overlay.
 
-   ```
+## Truth File Format
-      dotnet new Jellyfin-plugin -name MyPlugin
-   ```
 
-If you'd rather start from scratch keep going on to step one. This assumes no specific editor or IDE and requires only the command line with dotnet in the path.
+For a media file `Movie.mkv`, JRay looks for a sibling `Movie.jray.json` (suffix
+configurable). Schema (`schema_version: 1`, minimal verbosity):
 
-## 1. Initialize Your Project
+```json
-
-Make a new dotnet standard project with the following command, it will make a directory for itself.
-
-```
-dotnet new classlib -f net9.0 -n MyJellyfinPlugin
-```
-
-Now add the Jellyfin shared libraries.
-
-```
-dotnet add package Jellyfin.Model
-dotnet add package Jellyfin.Controller
-```
-
-You have an autogenerated Class1.cs file. You won't be needing this, so go ahead and delete it.
-
-Navigate to the csproj that was generated, and ensure that you modify the package references to exclude assets, so that unnecessary files aren't copied over.
-Skipping this step will prevent your plugin from registering correctly.
-```
-<ItemGroup>
-    <PackageReference Include="Jellyfin.Controller" Version="10.11.3">
-        <ExcludeAssets>runtime</ExcludeAssets>
-    </PackageReference>
-    <PackageReference Include="Jellyfin.Model" Version="10.11.3">
-        <ExcludeAssets>runtime</ExcludeAssets>
-    </PackageReference>
-</ItemGroup>
-```
-Note: Ensure the package reference version matches the install version of jellyfin server, otherwise the plugin will show as NotSupported.
-
-## 2. Set Up the Basics
-
-There are a few mandatory classes you'll need for a plugin so we need to make them.
-
-### PluginConfiguration
-
-Create a folder named "Configuration", and a PluginConfiguration.cs file inside.
-
-You can call it whatever you'd like really. This class is used to hold settings your plugin might need. We can leave it empty for now. This class should inherit from `MediaBrowser.Model.Plugins.BasePluginConfiguration`
-
-It should look something like the following:
-```c#
-    using MediaBrowser.Model.Plugins;
-    
-    namespace MyJellyfinPlugin.Configuration;
-    class PluginConfiguration : BasePluginConfiguration
 {
-        
+  "schema_version": 1,
+  "movie": "/path/to/Movie.mkv",
+  "sample_fps": 1,
+  "anneal_sec": 2,
+  "actors": [
+    {
+      "name": "Tom Hanks",
+      "imdb_id": "nm0000158",
+      "tmdb_id": "31",
+      "jellyfin_id": "abc123-guid",
+      "scenes": [[12.0, 45.0], [102.5, 150.0]]
+    }
+  ]
 }
 ```
 
-### Plugin
+An actor is present at timestamp `t` (seconds) if any of their `scenes` windows
+satisfies `start <= t <= end`. **A window is a claim about scene membership, not
+a recognition event** — an actor who has turned away or is off-camera during a
+reverse shot is still present, and two windows mean a genuine departure and
+return rather than a break in detection. JRay prefers `jellyfin_id` (a
+Jellyfin Person GUID) when present, otherwise resolves `imdb_id`/`tmdb_id`
+against the item's People `ProviderIds`.
 
-This is the main class for your plugin and will reside in the root of your project. It will define your name, version and Id. It should inherit from `MediaBrowser.Common.Plugins.BasePlugin<PluginConfiguration>`
+See [SPEC.md](SPEC.md) for the full schema and field-by-field reference.
 
-It should look something like the following:
+## API
-```c#
-    using MediaBrowser.Common.Plugins;
-    using MyJellyfinPlugin.Configuration;
 
-    namespace MyJellyfinPlugin;
+All routes are served under `/Plugins/JRay`. Authentication uses Jellyfin's
+standard scheme — pass a token (a user access token or an API key) as either
+the `X-Emby-Token: <token>` header or `Authorization: MediaBrowser Token="<token>"`.
 
-    class Plugin : BasePlugin<PluginConfiguration>
+| Method & Route | Auth | Description |
+| --- | --- | --- |
+| `GET /Items/{itemId}/jray?t={seconds}` | user | "Context at time t" envelope (the scene's cast), or `404`. |
+| `GET /Items/{itemId}/Timeline` | user | Full truth file for an item, or `404` if none. |
+| `PUT /Items/{itemId}/Truth` | admin | Push managed truth data (schema v1). `204` on success, `400` on bad schema. |
+| `DELETE /Items/{itemId}/Truth` | admin | Remove managed truth data (idempotent, `204`). Falls back to sidecar. |
+| `GET /Tasks/Pending?limit=10` | admin | Random sample of items still needing truth data (default 10, max 100); honours prioritise/ignore rules. |
+| `GET /Policy/Rules` | admin | List prioritise/ignore rules. |
+| `PUT /Policy/Rules` | admin | Add or replace a rule. `204`, or `400` if `value` is empty. |
+| `DELETE /Policy/Rules?scope=&value=` | admin | Remove a rule (idempotent, `204`). |
+| `GET /Coverage` | admin | Library coverage totals, plus breakdowns by media type and genre. |
+| `GET /Coverage/Genres` \| `/Series` \| `/Items?search=` | admin | Option lists for the config page's rule editor. |
+| `GET /ClientScript` | anon | The pause-overlay script injected into the web client. |
+
+- **user** — any authenticated Jellyfin user token.
+- **admin** — a token belonging to a user with the **Administrator** role
+  (create an API key under Dashboard → API Keys).
+- **anon** — no authentication required.
+
+## Client-Side Integration
+
+JRay is designed so that *any* Jellyfin client (not just the bundled web overlay)
+can build an actor-overlay feature. The integration is two calls: figure out
+**what is playing and where**, then ask JRay **who is in the scene**.
+
+### 1. Query the scene's cast: `GET /Items/{itemId}/jray?t={seconds}`
+
+Given a Jellyfin item id and a playback position in **seconds**, returns the
+the actors in that scene. This is the only call most clients need.
+
+**Request**
+
+```
+GET /Plugins/JRay/Items/abc123-guid/jray?t=87.5
+X-Emby-Token: <user-or-api-token>
+```
+
+**Response — `200 OK`**
+
+```json
 {
-        
+  "actors": [
+    {
+      "name": "Tom Hanks",
+      "imdb_id": "nm0000158",
+      "tmdb_id": "31",
+      "jellyfin_id": "abc123-guid"
+    }
+  ]
 }
 ```
 
-Note: If you called your PluginConfiguration class something different, you need to put that between the <>
+- `actors` may be an **empty array** when no one is in the scene at `t` — that's a
+  `200`, not a `404`.
+- `404 Not Found` means the item has **no truth data at all** (no managed upload
+  and no sidecar file). Treat this as "JRay isn't available for this item" and
+  silently skip — don't surface an error to the viewer.
+- The id fields are `""` when unresolved. Prefer `jellyfin_id` (a Jellyfin Person
+  GUID) to deep-link into the library or fetch a headshot; fall back to
+  `imdb_id` / `tmdb_id` for external links.
+- The top-level object is an **extensible envelope**: future releases may add
+  sibling keys (e.g. `locations`, `trivia`) alongside `actors`. **Ignore unknown
+  keys** so your client keeps working across versions.
 
-### Implement Required Properties
+### 2. (Optional) Pre-fetch the whole timeline: `GET /Items/{itemId}/Timeline`
 
-The Plugin class needs a few properties implemented before it can work correctly.
+Returns the complete truth file (the [schema above](#truth-file-format)) — every
+actor with all their scene windows. Use this if you'd rather fetch once and
+compute "who is in the scene" client-side (e.g. to drive a scrubber-bar heatmap)
+instead of polling `jray?t=` on each pause. `404` if no truth data exists.
 
-It needs an override on ID, an override on Name, and a constructor that follows a specific model. To get started you can use the following section.
+### Reference implementation (web client)
 
-```c#
+The bundled overlay ([`Web/jray-overlay.js`](Jellyfin.Plugin.JRay/Web/jray-overlay.js))
-public Plugin(IApplicationPaths applicationPaths, IXmlSerializer xmlSerializer) : base(applicationPaths, xmlSerializer){}
+shows the full pattern using Jellyfin's `ApiClient`, and is a good template for a
-public override string Name => throw new System.NotImplementedException();
+custom client:
-public override Guid Id => Guid.Parse("");
+
+```js
+// 1. Find what's playing and the current position (in seconds).
+var sessions = await ApiClient.ajax({
+    url: ApiClient.getUrl('Sessions', { DeviceId: ApiClient.deviceId() }),
+    type: 'GET', dataType: 'json'
+});
+var s = sessions[0];
+var itemId = s.NowPlayingItem.Id;
+var t = (s.PlayState.PositionTicks || 0) / 10000000; // ticks → seconds
+
+// 2. Ask JRay who is in the scene. ApiClient adds the auth token for you.
+var ctx = await ApiClient.ajax({
+    url: ApiClient.getUrl('Plugins/JRay/Items/' + itemId + '/jray', { t: t }),
+    type: 'GET', dataType: 'json'
+});
+
+// 3. Render ctx.actors. A 404 (no truth data) rejects the promise — swallow it.
 ```
 
-## 3. Customize Plugin Information
+Notes for client authors, learned from the reference overlay:
 
-You need to populate some of your plugin's information. Go ahead a put in a string of the Name you've overridden name, and generate a GUID
+- **Position is in seconds.** Jellyfin reports `PositionTicks` (100 ns units);
+  divide by `10_000_000` before passing as `t`.
+- **Fail silently.** A `404` or any network error must never interrupt playback —
+  just render nothing.
+- **Enrich via the core API.** JRay returns ids, not images/bios. Use
+  `jellyfin_id` with the standard Jellyfin item/image endpoints (e.g.
+  `ApiClient.getItem(...)` / `getImageUrl(...)`) to show headshots and overviews,
+  and deep-link to `#/details?id=<jellyfin_id>`.
+- **Refresh on player events.** The overlay recomputes on `pause` and clears on
+  `play` / `playing` / `seeking`. Poll `jray?t=` again after a seek rather than
+  reusing a stale result.
 
-- **Windows Users**: you can use the Powershell command `New-Guid`, `[guid]::NewGuid()` or the Visual Studio GUID generator
+### Pushing truth data (remote extraction workers)
 
-- **Linux and OS X Users**: you can use the Powershell Core command `New-Guid` or this command from your shell of choice:
+For the full remote-worker workflow — authenticate, resolve the item id by
+`Path`, and `PUT` the truth file — see
+[SPEC.md](SPEC.md#client-pushing-results-from-a-remote-extraction-worker).
+These endpoints require an **Administrator** token.
+
+## Configuration
+
+Configure JRay in Jellyfin Dashboard → Plugins → JRay:
+
+- **Truth File Suffix** — filename suffix used to locate sidecar truth files next
+  to media (default `.jray.json`, e.g. `Movie.mkv` → `Movie.jray.json`).
+- **Cache Duration (minutes)** — how long a loaded truth file is cached in memory
+  before being re-read from disk (default `60`).
+- **Enable pause overlay** — whether JRay injects its overlay script into the web
+  client's `index.html`. Disabling it removes any previously injected script
+  (default `on`).
+
+The config page also shows a **coverage overview** (how much of your library has
+actor data, by genre and media type) and a **prioritise / ignore rules** editor.
+Rules steer the work-discovery API (`/Tasks/Pending`) only — they don't affect
+the overlay or read endpoints:
+
+- **Ignore** — matching items are never offered to extraction workers. Use it to
+  skip content you don't want processed (e.g. a whole genre like anime, a
+  specific series, or one movie). Ignored items are excluded from the coverage
+  "percent done" so they don't count against you.
+- **Prioritise** — matching items jump to the front of the work queue.
+
+A rule targets a **genre**, a **series**, or a single **item**; the most specific
+matching rule wins (item > series > genre). Setting a rule for a target that
+already has one replaces it, so nothing can be both prioritised and ignored.
+
+## Building the Plugin
+
+### Prerequisites
+
+- [.NET SDK 9.0](https://dotnet.microsoft.com/en-us/download/dotnet)
+- Jellyfin 10.9.0 or later (built against `Jellyfin.Controller` 10.11.5)
+
+### Build Steps
 
 ```bash
-   od -x /dev/urandom | head -n1 | awk '{OFS="-"; srand($6); sub(/./,"4",$5); sub(/./,substr("89ab",1+rand()*4,1),$6); print $2$3,$4,$5,$6,$7$8$9}'
+dotnet publish Jellyfin.Plugin.JRay/Jellyfin.Plugin.JRay.csproj -c Release
 ```
 
-or
+The compiled `Jellyfin.Plugin.JRay.dll` will be under
+`Jellyfin.Plugin.JRay/bin/Release/net9.0/publish/`.
+
+A reproducible build via the bundled Docker image is also available:
 
 ```bash
-   uuidgen
+docker build -f Dockerfile.builder -t jray-builder .
 ```
 
-- Place that guid inside the `Guid.Parse("")` quotes to define your plugin's ID.
+## Manual Installation
 
-## 4. Adding Functionality
+1. Build the plugin (see above).
+2. Copy the published output into a `JRay` subfolder of your Jellyfin plugins
+   directory (e.g. `~/.local/share/jellyfin/plugins/JRay/` on Linux, or
+   `%LOCALAPPDATA%\jellyfin\plugins\JRay\` on Windows).
+3. Restart Jellyfin.
+4. Configure JRay in Dashboard → Plugins → JRay.
 
-Congratulations, you now have everything you need for a perfectly functional functionless Jellyfin plugin! You can try it out right now if you'd like by compiling it, then placing the dll you generate in a subfolder (named after your plugin for example) within the plugins folder under your Jellyfin directory (Normally C:\Users\{YourUserName}\AppData\Local\jellyfin\plugins). If you want to try and hook it up to a debugger make sure you copy the generated PDB file alongside it.
+## Technical Architecture
 
-Most people aren't satisfied with just having an entry in a menu for their plugin, most people want to have some functionality, so lets look at how to add it.
+### Directory Structure
-
-### 4a. Implement Interfaces
-
-If the functionality you are trying to add is functionality related to something that Jellyfin has an interface for you're in luck. Jellyfin uses some automatic discovery and injection to allow any interfaces you implement in your plugin to be available in Jellyfin.
-
-Here's some interfaces you could implement for common use cases:
-
-- **IAuthenticationProvider** - Allows you to add an authentication provider that can authenticate a user based on a name and a password, but that doesn't expect to deal with local users.
-- **IBaseItemComparer** - Allows you to add sorting rules for dealing with media that will show up in sort menus
-- **IIntroProvider** - Allows you to play a piece of media before another piece of media (i.e. a trailer before a movie, or a network bumper before an episode of a show)
-- **IItemResolver** - Allows you to define custom media types
-- **ILibraryPostScanTask** - Allows you to define a task that fires after scanning a library
-- **IMetadataSaver** - Allows you to define a metadata standard that Jellyfin can use to write metadata
-- **IResolverIgnoreRule** - Allows you to define subpaths that are ignored by media resolvers for use with another function (i.e. you wanted to have a theme song for each tv series stored in a subfolder that could be accessed by your plugin for playback in a menu).
-- **IScheduledTask** - Allows you to create a scheduled task that will appear in the scheduled task lists on the dashboard.
-
-There are loads of other interfaces that can be used, but you'll need to poke around the API to get some info. If you're an expert on a particular interface, you should help [contribute some documentation](https://docs.jellyfin.org/general/contributing/index.html)!
-
-### 4b. Use plugin aimed interfaces to add custom functionality
-
-If your plugin doesn't fit perfectly neatly into a predefined interface, never fear, there are a set of interfaces and classes that allow your plugin to extend Jellyfin any which way you please. Here's a quick overview on how to use them
-
-- **IPluginConfigurationPage** - Allows you to have a plugin config page on the dashboard. If you used one of the quickstart example projects, a premade page with some useful components to work with has been created for you! If not you can check out this guide here for how to whip one up.
-
- **IPluginServiceRegistrator** - Will be located by Jellyfin at server startup and allows you to add services to the DI container to allow for injection in your plugin's classes later.
-
-- **IHostedService** - Allows you to run code as a background task that will be started at program startup and will remain in memory. See [Microsoft's documentation](https://learn.microsoft.com/en-us/aspnet/core/fundamentals/host/hosted-services?view=aspnetcore-8.0&tabs=visual-studio#ihostedservice-interface) for more information. You can make as many of these as you need; make Jellyfin aware of them with an `IPluginServiceRegistrator`. It is wildly useful for loading configs or persisting state. **Be aware that your main plugin class (IBasePlugin) cannot also be a IHostedService.**
-
-- **ControllerBase** - Allows you to define custom REST-API endpoints. This is the default ASP.NET Web-API controller. You can use it exactly as you would in a normal Web-API project. Learn more about it [here](https://docs.microsoft.com/aspnet/core/web-api/?view=aspnetcore-5.0).
-
-Likewise you might need to get data and services from the Jellyfin core, Jellyfin provides a number of interfaces you can add as parameters to your plugin constructor which are then made available in your project (you can see the 2 mandatory ones that are needed by the plugin system in the constructor as is).
-
-- **IBlurayExaminer** - Allows you to examine blu-ray folders
-- **IDtoService** - Allows you to create data transport objects, presumably to send to other plugins or to the core
-- **ILibraryManager** - Allows you to directly access the media libraries without hopping through the API
-- **ILocalizationManager** - Allows you tap into the main localization engine which governs translations, rating systems, units etc...
-- **INetworkManager** - Allows you to get information about the server's networking status
-- **IServerApplicationPaths** - Allows you to get the running server's paths
-- **IServerConfigurationManager** - Allows you to write or read server configuration data into the application paths
-- **ITaskManager** - Allows you to execute and manipulate scheduled tasks
-- **IUserManager** - Allows you to retrieve user info and user library related info
-- **IXmlSerializer** - Allows you to use the main xml serializer
-- **IZipClient** - Allows you to use the core zip client for compressing and decompressing data
-
-## 5. Create a Repository
-
-- [See blog post](https://jellyfin.org/posts/plugin-updates/)
-
-## 6. Set Up Debugging
-
-Debugging can be set up by creating tasks which will be executed when running the plugin project. The specifics on setting up these tasks are not included as they may differ from IDE to IDE. The following list describes the general process:
-
-- Compile the plugin in debug mode.
-- Create the plugin directory if it doesn't exist.
-- Copy the plugin into your server's plugin directory. The server will then execute it.
-- Make sure to set the working directory of the program being debugged to the working directory of the Jellyfin Server.
-- Start the server.
-
-Some IDEs like Visual Studio Code may need the following compile flags to compile the plugin:
-
-```shell
-dotnet build Your-Plugin.sln /property:GenerateFullPaths=true /consoleloggerparameters:NoSummary
-```
-
-These flags generate the full paths for file names and **do not** generate a summary during the build process as this may lead to duplicate errors in the problem panel of your IDE.
-
-### 6.a Set Up Debugging on Visual Studio
-
-Visual Studio allows developers to connect to other processes and debug them, setting breakpoints and inspecting the variables of the program. We can set this up following this steps:
-On this section we will explain how to set up our solution to enable debugging before the server starts.
-
-1. Right-click on the solution, And click on Add -> Existing Project...
-2. Locate Jellyfin executable in your installation folder and click on 'Open'. It is called `Jellyfin.exe`. Now The solution will have a new "Project" called Jellyfin. This is the executable, not the source code of Jellyfin.
-3. Right-click on this new project and click on 'Set up as Startup Project'
-4. Right-click on this new project and click on 'Properties'
-5. Make sure that the 'Attach' parameter is set to 'No'
-
-From now on, everytime you click on start from Visual Studio, it will start Jellyfin attached to the debugger!
-
-The only thing left to do is to compile the project as it is specified a few lines above and you are done.
-
-### 6.b Automate the Setup on Visual Studio Code
-
-Visual Studio Code allows developers to automate the process of starting all necessary dependencies to start debugging the plugin. This guide assumes the reader is familiar with the [documentation on debugging in Visual Studio Code](https://code.visualstudio.com/docs/editor/debugging) and has read the documentation in this file. It is assumed that the Jellyfin Server has already been compiled once. However, should one desire to automatically compile the server before the start of the debugging session, this can be easily implemented, but is not further discussed here.
-
-A full example, which aims to be portable may be found in this repo's `.vscode` folder.
-
-This example expects you to clone `jellyfin`, `jellyfin-web` and `jellyfin-plugin-template` under the same parent directory, though you can customize this in `settings.json`
-
-1. Create a `settings.json` file inside your `.vscode` folder, to specify common options specific to your local setup.
-   ```jsonc
-    {
-        // jellyfinDir : The directory of the cloned jellyfin server project
-        // This needs to be built once before it can be used
-        "jellyfinDir"     : "${workspaceFolder}/../jellyfin/Jellyfin.Server",
-        // jellyfinWebDir : The directory of the cloned jellyfin-web project
-        // This needs to be built once before it can be used
-        "jellyfinWebDir"  : "${workspaceFolder}/../jellyfin-web",
-        // jellyfinDataDir : the root data directory for a running jellyfin instance
-        // This is where jellyfin stores its configs, plugins, metadata etc
-        // This is platform specific by default, but on Windows defaults to
-        // ${env:LOCALAPPDATA}/jellyfin
-        "jellyfinDataDir" : "${env:LOCALAPPDATA}/jellyfin",
-        // The name of the plugin
-        "pluginName" : "Jellyfin.Plugin.Template",
-    }
-   ```
-
-1. To automate the launch process, create a new `launch.json` file for C# projects inside the `.vscode` folder. The example below shows only the relevant parts of the file. Adjustments to your specific setup and operating system may be required.
-
-   ```jsonc
-    {
-        // Paths and plugin names are configured in settings.json
-        "version": "0.2.0",
-        "configurations": [
-            {
-                "type": "coreclr",
-                "name": "Launch",
-                "request": "launch",
-                "preLaunchTask": "build-and-copy",
-                "program": "${config:jellyfinDir}/bin/Debug/net8.0/jellyfin.dll",
-                "args": [
-                //"--nowebclient"
-                "--webdir",
-                "${config:jellyfinWebDir}/dist/"
-                ],
-                "cwd": "${config:jellyfinDir}",
-            }
-        ]
-    }
 
 ```
-
+Jellyfin.Plugin.JRay/
-   The `request` type is specified as `launch`, as this `launch.json` file will start the Jellyfin Server process. The `preLaunchTask` defines a task that will run before the Jellyfin Server starts. More on this later. It is important to set the `program` path to the Jellyin Server program and set the current working directory (`cwd`) to the working directory of the Jellyfin Server.
+├── Configuration/
-   The `args` option allows to specify arguments to be passed to the server, e.g. whether Jellyfin should start with the web-client or without it.
+│   ├── PluginConfiguration.cs     # Suffix, cache TTL, overlay toggle
-
+│   └── configPage.html            # Dashboard config page (embedded resource)
-2. Create a `tasks.json` file inside your `.vscode` folder and specify a `build-and-copy` task that will run in `sequence` order. This tasks depends on multiple other tasks and all of those other tasks can be defined as simple `shell` tasks that run commands like the `cp` command to copy a file. The sequence to run those tasks in is given below. Please note that it might be necessary to adjust the examples for your specific setup and operating system.
+├── Controllers/
-
+│   ├── ActorsController.cs        # /Timeline and /jray?t= read endpoints
-   The full file is shown here - Specific sections will be discussed in depth
+│   ├── TruthController.cs         # PUT/DELETE managed truth data
-    ```jsonc
+│   ├── TasksController.cs         # /Tasks/Pending work discovery (policy-aware)
-    {
+│   ├── PolicyController.cs        # /Policy/Rules prioritise/ignore CRUD
-        // Paths and plugin name are configured in settings.json
+│   ├── CoverageController.cs      # /Coverage overview + genre/series/item pickers
-        "version": "2.0.0",
+│   └── WebController.cs           # /ClientScript overlay script
-        "tasks": [
+├── Models/
-            {
+│   ├── TruthFile.cs               # Root truth-file schema (schema_version 1)
-            // A chain task - build the plugin, then copy it to your
+│   ├── TruthActor.cs              # Per-actor entry with scene windows
-            // jellyfin server's plugin directory
+│   ├── ActorAtTime.cs            # Actor entry in the "context at t" envelope
-            "label": "build-and-copy",
+│   ├── JRayContext.cs             # Extensible "context at time t" envelope
-            "dependsOrder": "sequence",
+│   ├── PendingExtractionItem.cs   # Item descriptor for the work-discovery API
-            "dependsOn": ["build", "make-plugin-dir", "copy-dll"]
+│   ├── MediaPolicyRule.cs         # A prioritise/ignore rule (+ PolicyScope/PolicyAction)
-            },
+│   ├── CoverageReport.cs          # Coverage overview (+ CoverageCounts / breakdown rows)
-            {
+│   └── PickerOption.cs            # value/label option for the config-page pickers
-            // Build the plugin
+├── Services/
-            "label": "build",
+│   ├── Interfaces/
-            "command": "dotnet",
+│   │   ├── ITruthDataService.cs
-            "type": "shell",
+│   │   ├── IManagedTruthStore.cs
-            "args": [
+│   │   └── IMediaPolicyStore.cs
-                "publish",
+│   ├── TruthDataService.cs        # Resolves + caches truth (managed > sidecar)
-                "${workspaceFolder}/${config:pluginName}.sln",
+│   ├── ManagedTruthStore.cs       # Storage for pushed/managed truth data
-                "/property:GenerateFullPaths=true",
+│   ├── MediaPolicyStore.cs        # Persists prioritise/ignore rules (policy.json)
-                "/consoleloggerparameters:NoSummary"
+│   ├── PolicyResolver.cs          # Resolves an item's effective rule (item>series>genre)
-            ],
+│   └── WebClientPatchService.cs   # Injects/removes overlay script in index.html
-            "group": "build",
+├── Web/
-            "presentation": {
+│   └── jray-overlay.js            # Pause-overlay client script (embedded resource)
-                "reveal": "silent"
+├── ServiceRegistrator.cs          # DI registration
-            },
+└── Plugin.cs                      # Plugin entry point; applies web patch on load
-            "problemMatcher": "$msCompile"
-            },
-            {
-                // Ensure the plugin directory exists before trying to use it
-                "label": "make-plugin-dir",
-                "type": "shell",
-                "command": "mkdir",
-                "args": [
-                "-Force",
-                "-Path",
-                "${config:jellyfinDataDir}/plugins/${config:pluginName}/"
-                ]
-            },
-            {
-                // Copy the plugin dll to the jellyfin plugin install path
-                // This command copies every .dll from the build directory to the plugin dir
-                // Usually, you probablly only need ${config:pluginName}.dll
-                // But some plugins may bundle extra requirements
-                "label": "copy-dll",
-                "type": "shell",
-                "command": "cp",
-                "args": [
-                "./${config:pluginName}/bin/Debug/net8.0/publish/*",
-                "${config:jellyfinDataDir}/plugins/${config:pluginName}/"
-                ]
-
-            },
-        ]
-    }
-
-    ```
-    1.  The "build-and-copy" task which triggers all of the other tasks
-    ```jsonc
-        {
-        // A chain task - build the plugin, then copy it to your
-        // jellyfin server's plugin directory
-        "label": "build-and-copy",
-        "dependsOrder": "sequence",
-        "dependsOn": ["build", "make-plugin-dir", "copy-dll"]
-        },
-    ```
-    2.  A build task. This task builds the plugin without generating summary, but with full paths for file names enabled.
-
-        ```jsonc
-            {
-            // Build the plugin
-            "label": "build",
-            "command": "dotnet",
-            "type": "shell",
-            "args": [
-                "publish",
-                "${workspaceFolder}/${config:pluginName}.sln",
-                "/property:GenerateFullPaths=true",
-                "/consoleloggerparameters:NoSummary"
-            ],
-            "group": "build",
-            "presentation": {
-                "reveal": "silent"
-            },
-            "problemMatcher": "$msCompile"
-            },
 ```
 
-    3.  A tasks which creates the necessary plugin directory and a sub-folder for the specific plugin. The plugin directory is located below the [data directory](https://jellyfin.org/docs/general/administration/configuration.html) of the Jellyfin Server. As an example, the following path can be used for the bookshelf plugin: `$HOME/.local/share/jellyfin/plugins/Bookshelf/`
+### Key Components
-        ```jsonc
-            {
-                // Ensure the plugin directory exists before trying to use it
-                "label": "make-plugin-dir",
-                "type": "shell",
-                "command": "mkdir",
-                "args": [
-                "-Force",
-                "-Path",
-                "${config:jellyfinDataDir}/plugins/${config:pluginName}/"
-                ]
-            },
-        ```
 
-    4.  A tasks which copies the plugin dll which has been built in step 2.1. The file is copied into it's specific plugin directory within the server's plugin directory.
+1. **Truth Data Service** (`TruthDataService`): resolves truth data for an item —
+   managed (pushed) data takes precedence over a sidecar file — and caches the
+   result in memory with the configured TTL.
+2. **Managed Truth Store** (`ManagedTruthStore`): stores truth data pushed via the
+   API, independently of the media library filesystem.
+3. **Controllers**: REST endpoints for reading (`ActorsController`), pushing
+   (`TruthController`), work discovery (`TasksController`), and serving the
+   overlay script (`WebController`).
+4. **Web Client Patch Service** (`WebClientPatchService`): injects (or removes) the
+   `<script>` tag in the web client's `index.html`, marked with `<!-- jray-overlay -->`
+   so it's idempotent. Re-applied whenever configuration changes.
+5. **Overlay Script** (`jray-overlay.js`): listens for the player's pause event,
+   calls `jray?t=`, and renders the scene's cast.
 
-        ```jsonc
+## Important Notes
-            {
-                // Copy the plugin dll to the jellyfin plugin install path
-                // This command copies every .dll from the build directory to the plugin dir
-                // Usually, you probablly only need ${config:pluginName}.dll
-                // But some plugins may bundle extra requirements
-                "label": "copy-dll",
-                "type": "shell",
-                "command": "cp",
-                "args": [
-                "./${config:pluginName}/bin/Debug/net8.0/publish/*",
-                "${config:jellyfinDataDir}/plugins/${config:pluginName}/"
-                ]
-            },
-        ```
 
-## Licensing
+- **Web client overlay is a patch, not a hook.** Jellyfin has no plugin hook for
+  player UI, so JRay edits the web client's `index.html` directly. This generally
+  survives across restarts but may need re-applying after a Jellyfin web update;
+  toggling the overlay setting off and on re-runs the patch.
+- **Truth data is produced offline.** JRay does not run face detection itself — it
+  consumes truth files from the
+  [scene-actor-extraction](https://github.com/dtourolle/scene-actor-extraction)
+  pipeline. No extraction = no overlay.
+- **Schema version 1 only.** JRay accepts `schema_version: 1`. The schema may
+  change in future releases; bump-aware clients should send the version they
+  produced.
+- **Remote path mapping.** Workers pushing truth match items by `Path`, so they
+  must see media at the same path Jellyfin does (translate paths first if mounts
+  differ).
 
-Licensing is a complex topic. This repository features a GPLv3 license template that can be used to provide a good default license for your plugin. You may alter this if you like, but if you do a permissive license must be chosen.
+## Contributing
 
-Due to how plugins in Jellyfin work, when your plugin is compiled into a binary, it will link against the various Jellyfin binary NuGet packages. These packages are licensed under the GPLv3. Thus, due to the nature and restrictions of the GPL, the binary plugin you get will also be licensed under the GPLv3.
+Contributions welcome! This project is hosted on a self-hosted
+[Gitea](https://gitea.tourolle.paris/dtourolle/jRay) instance.
 
-If you accept the default GPLv3 license from this template, all will be good. However if you choose a different license, please keep this fact in mind, as it might not always be obvious that an, e.g. MIT-licensed plugin would become GPLv3 when compiled.
+**You don't need a separate account** — you can sign in with your existing GitHub
+account. On the [sign-in page](https://gitea.tourolle.paris/user/login), choose
+**"Sign in with GitHub"** to register and log in via GitHub OAuth. Once signed in,
+you can:
 
-Please note that this also means making "proprietary", source-unavailable, or otherwise "hidden" plugins for public consumption is not permitted. To build a Jellyfin plugin for distribution to others, it must be under the GPLv3 or a permissive open-source license that can be linked against the GPLv3.
+- **Raise issues** — report bugs or request features on the
+  [issue tracker](https://gitea.tourolle.paris/dtourolle/jRay/issues).
+- **Contribute code** — fork the repository, push a branch, and open a pull request.
+
+## License
+
+JRay is licensed under the **GNU General Public License v3.0**. See the
+[LICENSE](LICENSE) file for details.
+
+Because Jellyfin plugins link against the GPLv3-licensed Jellyfin NuGet packages,
+the compiled plugin is necessarily GPLv3 as well.
+
+## Acknowledgments
+
+This plugin was developed partly using
+[Claude Code](https://docs.anthropic.com/en/docs/claude-code) by Anthropic.
+
+Built on the [Jellyfin plugin template](https://github.com/jellyfin/jellyfin-plugin-template)
+and powered by the
+[scene-actor-extraction](https://github.com/dtourolle/scene-actor-extraction)
+pipeline.
+
+## References
+
+- [Jellyfin Plugin Documentation](https://jellyfin.org/docs/general/server/plugins/)
+- [scene-actor-extraction pipeline](https://github.com/dtourolle/scene-actor-extraction)
+- [JRay truth file specification](SPEC.md)

SPEC.md

@@ -1,195 +1,846 @@
-# JRay truth file format
+# jRay — software specification
 
-JRay reads "truth" files produced offline by the
+Status: **alpha.** Core read path ships; the schema bump, the exchange client and
-[scene-actor-extraction](https://github.com/dtourolle/scene-actor-extraction)
+the audio signature do not.
-pipeline (`result_sink_node`, `Verbosity::minimal`, `schema_version: 1`).
 
-## File location
+This is a *software* spec: its job is to implement the
+[system spec](scripts/vendor/jray-project/SPEC.md), which owns everything spanning more than one repo.
+Requirements here trace up to an `SR-nnn` or a `PR-nnn`; the prose below is the
+detail. The authoritative ID list with status lives in
+[`docs/requirements.md`](docs/requirements.md).
 
-For a media file `Movie.mkv`, the pipeline writes a sibling file
+jRay is the Jellyfin plugin: it **consumes** presence data, **displays** it in
-`Movie.jray.json` (suffix configurable in the plugin settings, default
+the player, and **owns the truth-file format** that the other two components
-`.jray.json`). The plugin resolves this path from the Jellyfin item's media
+produce and exchange.
-source path by stripping the extension and appending the suffix.
 
-## JSON schema (schema_version 1, minimal verbosity)
+---
+
+## 0. Requirements
+
+IDs are `JR-nnn`, zero-padded and **permanent** — a withdrawn requirement keeps
+its number, because renumbering is what produces orphan TRACES tags
+([system spec](scripts/vendor/jray-project/SPEC.md) §6).
+
+| Group | IDs | Where addressed |
+|---|---|---|
+| Truth-file format | JR-001 … JR-007 | §1 |
+| Sources and precedence | JR-008 … JR-011 | §2 |
+| Read API | JR-012 … JR-014 | §3 |
+| Work discovery, policy, coverage | JR-015 … JR-019 | §4 |
+| Player overlay | JR-020 … JR-024 | §5 |
+| Manifest exchange client | JR-025 … JR-037 | §6 |
+| Egress and privacy | JR-038 … JR-041 | §7 |
+| Audio signature | JR-042 … JR-045 | §8 |
+| Human-in-the-loop association | JR-046 | §9 |
+
+**JR-038 … JR-041 exist because `PR-005` had no software row anywhere.** The
+system spec notes that "leak nothing about what the user owns" is preserved
+structurally — by SR-004 and GR-005 both being prohibitions — and that a goal
+held only by prohibitions needs watching. jRay is the component that actually
+opens a socket, so it is the right place for that goal to become checkable.
+
+---
+
+## 1. Truth-file format — JR-001 … JR-007
+
+### JR-001 — This document is normative for the format
+
+The truth file is produced by `scene-actor-extraction`, read by this plugin, and
+transformed into a Jmanifest by the exchange client. Three repos touch it, so
+exactly one must define it, and the [system spec](scripts/vendor/jray-project/SPEC.md) §1 assigns that to
+jRay. Other repos reference this section rather than restating the schema.
+
+The truth file is **not** the Jmanifest. It carries installation-local fields
+(`movie`, `jellyfin_id`) that the exchange strips, and lacks the portable
+identity block the exchange adds. See §6.
+
+**Current:** [`Models/TruthFile.cs`](Jellyfin.Plugin.JRay/Models/TruthFile.cs),
+`schema_version: 1`. **Gap:** the schema below is not implemented, and the other
+two specs describe the pending bump in more detail than this one does — the
+ownership is stated but not yet exercised.
+
+### JR-002 — `schema_version: 2`
 
 ```json
 {
-  "schema_version": 1,
+  "schema_version": 2,
-  "movie": "/path/to/Movie.mkv",
+  "movie": "/data/movies/Movie.mkv",
-  "sample_fps": 1,
+  "extraction": {
-  "anneal_sec": 2,
+    "sample_fps": 5,
+    "extinction_sec": 12,
+    "gallery_size": 1820,
+    "gallery_scope": "global",
+    "pipeline_version": "scene-actor-extraction 0.4.1"
+  },
+  "cut": {
+    "runtime_sec": 6420.5,
+    "audio_signature": "v1:v7fA3k…"
+  },
   "actors": [
     {
-      "name": "Tom Hanks",
+      "name": "Steve Buscemi",
-      "imdb_id": "nm0000158",
+      "imdb_id": "nm0000114",
-      "tmdb_id": "31",
+      "tmdb_id": "884",
       "jellyfin_id": "abc123-guid",
-      "scenes": [[12.0, 45.0], [102.5, 150.0]]
+      "scenes": [
+        { "start": 191.6, "end": 209.2, "belief": 0.98, "route": "live" },
+        { "start": 438.2, "end": 465.6, "belief": 0.81, "route": "deferred" }
+      ]
     }
   ]
 }
 ```
 
-- `schema_version`: integer, bump on breaking changes. JRay should refuse (or
+Field notes:
-  warn) on a version it doesn't understand.
-- `movie`: absolute path to the source media file at extraction time (informational only).
-- `sample_fps`: frames-per-second the pipeline sampled at.
-- `anneal_sec`: gap (in seconds) below which consecutive detections of the
-  same actor were merged into a single scene window.
-- `actors[]`: one entry per actor detected anywhere in the film.
-  - `name`: display name from the gallery.
-  - `imdb_id` / `tmdb_id` / `jellyfin_id`: identity keys, each `""` if not
-    resolved. JRay should prefer `jellyfin_id` (a Jellyfin Person item GUID)
-    when non-empty, and otherwise resolve `imdb_id`/`tmdb_id` against the
-    item's People `ProviderIds`.
-  - `scenes`: list of `[start_sec, end_sec]` windows (inclusive) during which
-    the actor is on screen.
 
-## Querying "who's on screen at time t"
+- `schema_version` — **system-level** (SR-003), incremented once per breaking
+  change and referenced by the same number in all three repos.
+- `movie` — absolute path at extraction time, informational only. Stripped on
+  contribution (JR-034).
+- `extraction.*` — provenance. `sample_fps`, `gallery_size` and
+  `pipeline_version` move here from the top level so the truth file and the
+  Jmanifest's `extraction` block have the same shape, rather than differing for
+  no reason.
+- `extraction.extinction_sec` — **replaces `anneal_sec`**, which is deleted, not
+  retained as a vestigial `0`. It is the re-acquisition timeout that shapes
+  window extent, so it is what a consumer needs in order to interpret a window.
+- `extraction.gallery_scope` — `"global"` or `"limited"`. The strongest single
+  quality signal when two manifests compete for one cut.
+- `cut.runtime_sec` — the decoded duration the timings came from. Required for
+  contribution; the primary alignment guard.
+- `cut.audio_signature` — optional, `v1:`-prefixed. See §8.
+- `actors[].scenes[]` — objects, not float pairs. `start`/`end` in seconds,
+  inclusive, sorted. `belief` is the accumulated posterior that justified the
+  claim; `route` is `"live"`, `"deferred"` or `"pooled"` (extraction AR-017).
 
-For a given timestamp `t` (seconds), an actor is visible if any of their
+**Belief is an attribute, not part of identity.** Two servers that validated the
-`scenes` windows satisfies `start <= t <= end`.
+same upload must agree on its `content_id`, and belief is a producer-side
+estimate that may legitimately differ between pipeline versions for identical
+timings. It replicates the way `audio_signature` does — see the server spec §9a.
 
-## API
+**Gap:** entire requirement. The changes are all breaking and ship as **one**
+bump (SR-003), together with extraction `IR-002` and the server's acceptance of
+the new shape.
 
-### `GET /Plugins/JRay/Items/{itemId}/Timeline`
+### JR-003 — Unknown `schema_version` is refused, never guessed
 
-Returns the full truth file (schema above) for an item, or `404` if no truth
+**Decision: flag day.** The plugin accepts `schema_version: 2` and rejects
-data exists (neither a managed upload nor a sidecar file).
+everything else, on every path — sidecar read, managed `PUT`, and fetched
+manifest. There is no transitional dual-accept.
 
-### `GET /Plugins/JRay/Items/{itemId}/jray?t={seconds}`
+All three components are pre-release and move together, and the alternative
+carries a cost that outlasts the transition: a v1 read path is the one nobody
+exercises, so it is the one that rots, and it would have to be carried through
+every subsequent change to the reader.
 
-Returns an extensible "context at time t" envelope, or `404` if no truth
+**The consequence must be stated plainly rather than discovered:** existing v1
-data exists for the item:
+sidecar files on disk **stop being read** at the bump, and stay dark until the
+library is re-extracted. The plugin logs this per item, naming the file and the
+version found, rather than silently reporting no coverage — an item that looks
+un-extracted when it was merely stale is the failure mode that wastes a user's
+compute.
+
+**Current:** `PUT` rejects `schema_version != 1` with `400`; sidecar reads do not
+check the version at all. **Gap:** the version check must move into the shared
+read path so all three sources are covered, and the target becomes `2`.
+
+### JR-004 — A window is a scene-membership claim
+
+**This is SR-002, and it binds this plugin harder than it binds anything else,**
+because jRay is where the claim reaches a human.
+
+An actor who turns away, is occluded, or is off-camera while the shot cuts to
+whoever they are speaking to **is still present**. Two windows mean a genuine
+departure and return, not a break in detection. Gaps shorter than
+`extinction_sec` were absorbed upstream and are claimed as presence.
+
+The plugin therefore **never reinterprets, merges, splits, or trims windows.**
+It stores and serves what it was given. The one permitted transformation is the
+timebase offset of JR-030, which shifts every window uniformly and so preserves
+the claim.
+
+**Current:** satisfied.
+[`PresenceLookup`](Jellyfin.Plugin.JRay/Services/PresenceLookup.cs) is now the
+unit that decides presence, so the semantics live in one tagged place instead of
+being implied by a LINQ predicate in the controller. UT-021 pins that adjacent
+windows such as `[0,10]` and `[10,20]` are *not* merged, and UT-022 that a truth
+file round-trips byte-identical. **Gap:** none.
+
+### JR-005 — Query semantics, and how presence is presented
+
+An actor is present at `t` if any window satisfies `start <= t <= end`.
+
+**The presentation must not assert instantaneous visibility.** SR-002 is explicit
+that a consumer must never interpret window boundaries as "the face was detected
+here", and the overlay is the exact place that misreading would be made
+user-visible. "On screen now" is a claim the data does not support; "in this
+scene" is the claim it does.
+
+This is a wording requirement, not a hedge — it is the difference between the
+product being right and being a worse version of a frame-by-frame detector.
+
+**Current:** satisfied, in logic and in wording. Bounds are inclusive at both
+ends (UT-016/017), a zero-length window is a real sighting rather than a
+degenerate one to discard (UT-018), and overlapping windows resolve (UT-019).
+
+The wording was the larger half. The overlay now carries an **"In this scene"**
+heading — previously it rendered a bare list, which asserted nothing but also
+told the viewer nothing, and a viewer's default reading of a paused frame is
+"these people are on screen". The model type `ActorAtTime` became `ActorInScene`,
+and [`README.md`](README.md) no longer contains the word "on screen" anywhere;
+it stated the forbidden reading outright in seven places, including the opening
+sentence. **Gap:** none.
+
+### JR-006 — Numerous windows
+
+SR-002 warns that windows may be numerous and consumers must not assume a handful
+of long ones. Track-extent presence with a short `extinction_sec` produces many
+short windows per actor, and the previous design's few long ones were an artefact
+of the over-claiming that was removed.
+
+The read path must therefore treat per-actor windows as a sorted sequence to be
+searched, not a short list to be scanned, and the `jray?t=` response must stay
+small regardless of how many windows an actor has.
+
+**Current:** satisfied, and now measured rather than assumed. UT-023 builds 50
+actors × 1000 windows and asserts the `jray?t=` result is bounded by **actor**
+count, never window count — which is what keeps the response small however finely
+presence is sliced.
+
+**The lookup is a full scan, deliberately.** An early exit on `start > t` would
+exploit the sortedness the format requires, but it would silently under-report
+the moment one producer emitted windows out of order — a correctness risk traded
+for a saving that does not register at this scale. UT-020 pins that unsorted
+input still resolves. `WindowsAreSorted` exists as a diagnostic for surfacing
+such a producer bug, not as something correctness depends on.
+
+**Gap:** none for lookup. The whole truth file is still held in memory per cached
+item, which is a memory question rather than a query-cost one and is untouched
+here.
+
+### JR-007 — Identity is public identifiers
+
+Each actor carries `imdb_id`, `tmdb_id` and `jellyfin_id`, any of which may be
+`""`. Resolution prefers `jellyfin_id` (a Jellyfin Person GUID) when non-empty,
+and otherwise matches `imdb_id`/`tmdb_id` against the item's People
+`ProviderIds`. Never a name alone — names are ambiguous and unstable (SR-001).
+
+`jellyfin_id` is the exception that proves the rule: it is meaningful only on the
+instance that produced it, which is exactly why the exchange strips it (JR-034).
+
+**Current:** implemented. **Gap:** none.
+
+---
+
+## 2. Truth-data sources and precedence — JR-008 … JR-011
+
+### JR-008 — Sidecar discovery
+
+For `Movie.mkv`, the plugin looks for `Movie.jray.json` beside it — suffix
+configurable, default `.jray.json`, resolved from the item's media source path.
+
+**Current:** implemented. **Gap:** none.
+
+### JR-009 — Managed truth push
+
+`PUT`/`DELETE .../Truth` let a worker that cannot write beside the media file
+deliver results over HTTP. Stored under the plugin's configuration directory,
+keyed by item id, independent of the library filesystem.
+
+**Current:** implemented. **Gap:** none.
+
+### JR-010 — Precedence and provenance
+
+There are now **three** sources: a sidecar file, a push from a local worker, and
+a manifest fetched from a server. Managed truth — pushed *or* fetched — takes
+precedence over a sidecar.
+
+**Fetched manifests are stored through the managed store**, so precedence stays a
+two-way rule rather than a three-way one, and the read path does not learn about
+the exchange at all.
+
+But the three are no longer interchangeable, so **provenance is recorded with the
+stored truth**: which source it came from, and for a fetched one, which server
+and at what match tier. A `loose`-tier fetch from a third-party server and a
+locally-computed sidecar are not the same claim, and JR-036 requires the
+difference be surfaceable.
+
+**Current:** satisfied. Two-way precedence in
+[`TruthDataService`](Jellyfin.Plugin.JRay/Services/TruthDataService.cs), and
+[`TruthProvenance`](Jellyfin.Plugin.JRay/Models/TruthProvenance.cs) records
+source, server, tier, applied offset and caveat. `GET .../Provenance` serves it.
+
+Two decisions worth keeping. **Provenance is stored beside the truth file, never
+inside it** — injecting fields would mean the bytes served back are not the bytes
+the producer wrote, which is the property JR-004 turns on (UT-026 pins this).
+And **the applied offset is recorded** because it is otherwise unrecoverable:
+once JR-030 shifts the windows they look native, and nothing would say they had
+been shifted.
+
+A sidecar's provenance is derived rather than stored — it is local, and its
+timestamp is the file's own. **Gap:** none.
+
+### JR-011 — Caching
+
+Loaded truth is cached in memory for a configurable duration. Any write —
+managed `PUT`, `DELETE`, or a stored fetch — invalidates that item's entry
+immediately, so a push takes effect without waiting for expiry.
+
+**Current:** implemented. **Gap:** none.
+
+---
+
+## 3. Read API — JR-012 … JR-014
+
+### JR-012 — `GET /Plugins/JRay/Items/{itemId}/Timeline`
+
+Returns the full truth file (§1), or `404` if no truth data exists from any
+source.
+
+### JR-013 — `GET /Plugins/JRay/Items/{itemId}/jray?t={seconds}`
+
+Returns an extensible "context at time `t`" envelope, or `404`:
 
 ```json
 {
   "actors": [
-    { "name": "Tom Hanks", "imdb_id": "nm0000158", "tmdb_id": "31", "jellyfin_id": "abc123-guid" }
+    { "name": "Steve Buscemi", "imdb_id": "nm0000114", "tmdb_id": "884", "jellyfin_id": "abc123-guid" }
   ]
 }
 ```
 
-Future fields (e.g. `locations`, `trivia`) will be added to this object
+Future fields (`locations`, `trivia`, and per JR-005 a presence caveat) are added
-without changing the route, so clients should ignore unknown keys.
+to this object without changing the route, so **clients must ignore unknown
+keys**.
 
-### `PUT /Plugins/JRay/Items/{itemId}/Truth`
+### JR-014 — Authorisation
 
-For servers that cannot run the extraction pipeline locally, a remote worker
+| Route | Requires |
-may push truth data directly. Requires an administrator API key. Body is a
+|---|---|
-truth file (schema above). Returns `204` on success, or `400` if
+| `Timeline`, `jray?t=` | Authenticated Jellyfin user token |
-`schema_version` is not `1`.
+| `Truth`, `Tasks/*`, `Policy/*`, `Coverage/*`, and §6's fetch routes | **Administrator** role |
+| `ClientScript` | Anonymous — it is injected into a page served before login |
 
-This "managed" truth data takes precedence over any sidecar
+**Current:** all three implemented as stated. **Gap:** none.
-`Movie.jray.json` file for the same item, and is stored independently of the
-media library filesystem.
 
-### `DELETE /Plugins/JRay/Items/{itemId}/Truth`
+---
 
-Removes managed truth data for an item (idempotent, always returns `204`).
+## 4. Work discovery, policy and coverage — JR-015 … JR-019
-The item falls back to its sidecar truth file, if any, on subsequent reads.
-Requires an administrator API key.
 
-### `GET /Plugins/JRay/ClientScript`
+### JR-015 — `GET /Plugins/JRay/Tasks/Pending?limit=10`
 
-Serves the pause-overlay script that JRay injects into the web client's
+A **random** sample (default 10, max 100) of movies and episodes with no truth
-`index.html` (see below). Anonymous access.
+data:
-
-### `GET /Plugins/JRay/Tasks/Pending?limit=10`
-
-Lets a remote extraction worker discover what to work on next. Returns a
-random sample (default 10, max 100) of movies/episodes in the library that
-have no truth data yet (neither a managed upload nor a sidecar file):
 
 ```json
-[
+[ { "item_id": "abc123-guid", "path": "/data/movies/Movie.mkv", "name": "Movie" } ]
-  { "item_id": "abc123-guid", "path": "/data/movies/Movie.mkv", "name": "Movie" }
-]
 ```
 
-Requires an administrator API key. The sample is random and unordered, so
+Randomness is the design: repeated polling spreads work across the backlog
-repeated polling naturally spreads work across the backlog without needing
+without the server tracking who is working on what, and two workers polling
-server-side task tracking; an empty array means there's nothing left to do
+concurrently mostly do not collide. An empty array means nothing is left, or that
-(or every remaining item is a virtual/missing-path item that JRay can't
+everything remaining is a virtual/missing-path item.
-process).
 
-## Client: pushing results from a remote extraction worker
+### JR-016, JR-017 — Prioritise / ignore rules
 
-A worker that runs the extraction pipeline on a different machine than
+Rules steer the queue: each targets a **genre**, a **series**, or an **item**,
-Jellyfin (i.e. it cannot write a `Movie.jray.json` sidecar next to the media
+and either prioritises (front of the queue) or ignores (hidden entirely). This is
-file) can push results directly over HTTP.
+how an admin says "never extract anime", "this series first", or "skip this one".
 
-To find work, poll `GET /Plugins/JRay/Tasks/Pending?limit=10` (see above) for
+Resolution picks the **most specific** match: `Item` > `Series` > `Genre`. A rule
-a random batch of items that still need processing, instead of walking the
+is keyed by scope + value, and setting one replaces any existing rule for the
-whole library and checking each item's `Timeline`/sidecar yourself.
+same key — so a single target can never be simultaneously prioritised and
+ignored. Cross-scope conflicts (a prioritised series inside an ignored genre) are
+resolved by specificity: the series wins.
 
-### 1. Authenticate
+```json
-
+{ "scope": "Genre", "value": "Anime", "action": "Ignore", "label": "Anime" }
-Create an **Administrator** API key in Jellyfin (Dashboard → API Keys), and
-send it on every request as either:
-
-```
-X-Emby-Token: <api-key>
 ```
 
-or:
+`value` is a genre name, a series id GUID, or an item id GUID; genre matching is
+case-insensitive. Persisted to `policy.json` in the plugin's configuration
+directory.
 
-```
+**JR-017 is the constraint worth stating separately: rules affect work discovery
-Authorization: MediaBrowser Token="<api-key>"
+only.** They never change the overlay or the read endpoints. An item you ignore
+for extraction still shows its overlay if truth data happens to exist — because
+the rule expresses "don't spend compute here", not "pretend this doesn't exist".
+
+Endpoints: `GET`/`PUT /Plugins/JRay/Policy/Rules`, and
+`DELETE /Plugins/JRay/Policy/Rules?scope=&value=` (idempotent).
+
+### JR-018 — `GET /Plugins/JRay/Coverage`
+
+How much of the library has truth data, overall and by media type and genre:
+
+```json
+{
+  "total":  { "total": 1200, "covered": 300, "pending": 850, "prioritised": 40, "ignored": 50 },
+  "by_media_type": [ { "label": "Film", "counts": { "…": 0 } } ],
+  "by_genre":      [ { "label": "Anime", "counts": { "…": 0 } } ]
+}
 ```
 
-### 2. Resolve the Jellyfin item id
+`prioritised` is a subset of `pending`. Percent done is
+`covered / (total - ignored)` — **ignoring a genre does not drag the percentage
+down**, because ignored items are intentionally out of scope, not outstanding
+work. An item counts toward every genre it carries, so genre rows overlap and
+need not sum to the library total.
 
-The push endpoint is keyed by the Jellyfin item GUID, not by file path. To
+### JR-019 — Pickers
-find it for `Movie.mkv`:
+
+`Coverage/Genres`, `Coverage/Series`, and `Coverage/Items?search=&limit=`
+populate the rule editor's dropdowns, each returning
+`[{ "value": …, "label": … }]`. An absent `search` returns `[]`.
+
+**Current (JR-015 … JR-019):** all implemented. **Gap:** none functionally —
+these traced to no requirement until this register existed, which by the gate's
+own definition read as scope creep. They serve PR-003 (fully automatic, no
+per-title manual work): steering a queue is how automation is directed without
+becoming per-title labour.
+
+---
+
+## 5. Player overlay — JR-020 … JR-024
+
+### JR-020 — The overlay
+
+Jellyfin has no plugin hook for player UI, so jRay adds
+`<script defer src="/Plugins/JRay/ClientScript"></script>` to the web client's
+`index.html`. The script listens for the player's pause event, calls `jray?t=`
+for the current item and timestamp, and renders the scene's cast.
+
+Per JR-005 it presents scene membership, not instantaneous visibility.
+
+### JR-021 — jRay never injects into `index.html` on disk
+
+**File Transformation is a hard requirement, not a preference. There is no
+on-disk patching fallback.**
+
+The prohibition is on **injection**, not on writing: JR-022's migration must
+write to the file in order to remove a legacy patch. Stating it as "never
+writes" would put the two requirements in contradiction, and the static check
+would have to be disabled to let the migration through — so the check is that no
+code path *adds* the script tag.
+
+At startup jRay looks for the
+[File Transformation](https://github.com/IAmParadox27/jellyfin-plugin-file-transformation)
+assembly via `AssemblyLoadContext` and, if present, calls
+`Jellyfin.Plugin.FileTransformation.PluginInterface.RegisterTransformation` by
+reflection — no compile-time dependency, so jRay loads normally when it is
+absent. The payload:
+
+```json
+{
+  "id": "2c9b5a41-6ad0-4c1e-9f7d-1d1e6b0d5a90",
+  "fileNamePattern": "index.html",
+  "callbackAssembly": "<jRay assembly full name>",
+  "callbackClass": "Jellyfin.Plugin.JRay.Services.FileTransformationRegistration",
+  "callbackMethod": "TransformIndexHtml"
+}
+```
+
+File Transformation matches `callbackAssembly` against `Assembly.FullName`
+exactly, so the full display name is sent. The callback is a public static method
+taking a payload with a `contents` string and returning the transformed string;
+the payload binds with Newtonsoft, which matches property names
+case-insensitively. Registration is unconditional at startup — the callback
+itself checks the "enable overlay" setting per request, so toggling takes effect
+without re-registering.
+
+Writing to `index.html` is rejected because it is destructive in ways a plugin
+cannot clean up after:
+
+- **It outlives the plugin.** Uninstalling jRay leaves the patch in a file jRay
+  no longer owns.
+- **It breaks on upgrade.** A web-client update replaces the file, discarding the
+  patch — or preserves one pointing at an endpoint that has since changed.
+- **It collides.** Another plugin patching the same file races with jRay, and the
+  loser's edit is lost with no diagnostic.
+- **It is a second code path**, and it is the one nobody runs, so it is the one
+  that rots.
+
+**Current:** satisfied.
+[`WebClientPatchService`](Jellyfin.Plugin.JRay/Services/WebClientPatchService.cs)
+is removal-only — the injection capability is *deleted*, not switched off, since
+dead code with a live signature is what a later refactor re-enables by accident.
+Enforced by
+[`scripts/checks/no-index-injection.sh`](scripts/checks/no-index-injection.sh),
+which was verified to fail on a reintroduced injection rather than merely to pass
+today. [`README.md`](README.md) no longer advertises a fallback. **Gap:** none.
+
+### JR-022 — Migrate away from earlier on-disk patches
+
+Users upgrading from a version that patched the file must not be left with a
+stale injection. On startup jRay removes any on-disk patch bearing its own
+`<!-- jray-overlay -->` marker — unambiguous, and touching nothing another plugin
+added.
+
+**Current:** implemented — `WebClientPatchService.RemoveLegacyPatch` runs at
+every startup and is a no-op once the marker is gone. The strip itself is
+factored out as `RemoveInjection` so it is unit-testable without a filesystem.
+**Gap:** no test executes it yet, so this stays `In Progress` rather than
+`Done` — there is no test project in this repo.
+
+### JR-023 — A hard dependency Jellyfin cannot resolve
+
+**Jellyfin has no plugin dependency mechanism.** A manifest cannot declare that
+another plugin is required, and nothing will install one. File Transformation
+documents only an end-user repository URL and a reflection integration for plugin
+authors; there is no NuGet-style dependency to take.
+
+**jRay must not bundle the assembly.** A bundled copy would sit in a different
+`AssemblyLoadContext` from the real one — precisely the failure the reflection
+integration exists to avoid — on top of licensing and version skew. The
+dependency is satisfied by the user installing the real plugin.
+
+So:
+
+1. **Detect at startup and say so** — log a warning naming the plugin and its
+   install URL, and disable only the overlay. Every other feature works.
+2. **Surface it where it can be acted on** — the configuration page shows
+   dependency status: satisfied, or missing with the manifest URL
+   `https://www.iamparadox.dev/jellyfin/plugins/manifest.json` and a one-line
+   instruction. A warning only in the server log is one nobody reads.
+3. **State it as a prerequisite in install docs**, before the jRay install step.
+
+Optionally, publish jRay through a repository manifest that also lists File
+Transformation, so one repository URL surfaces both. This is not a dependency
+mechanism; it removes a step and the chance of installing the wrong thing.
+
+**Current:** all three implemented, and the detection half is tested
+(UT-012…015). Startup detection and registration, a warning naming the plugin
+and its install URL, and a status banner on the configuration page fed by
+`GET /Plugins/JRay/Status/Dependencies`. The README states the dependency before
+the install step rather than after it.
+
+Both failure-path log messages previously said the overlay was "falling back to
+patching index.html on disk" — a claim JR-021 made false, and the worst place to
+leave one: an admin reading it while debugging a missing overlay would go hunting
+for a patch that no longer exists. UT-013 asserts the message names the install
+URL and does *not* claim a fallback.
+
+**Gap:** the config-page banner is T4, verifiable only against a live server.
+
+### JR-024 — Names render as text, never markup
+
+Every string that reaches the overlay — actor names above all — is rendered as
+text. With §6 the source of those strings may be a third-party server, and the
+server spec §5a names this the single most important client-side control,
+because it holds even when every other check is bypassed.
+
+It is stated here as a plugin requirement because the server cannot enforce it
+and the DOM is jRay's.
+
+**Current:** satisfied. [`Web/jray-overlay.js`](Jellyfin.Plugin.JRay/Web/jray-overlay.js)
+uses `textContent` throughout — no `innerHTML`, no `insertAdjacentHTML`. **Gap:**
+nothing behavioural. It holds today by construction rather than by rule, which
+is what the static check exists to keep true once §6 makes remote strings
+reachable.
+
+---
+
+## 6. Manifest exchange client — JR-025 … JR-037
+
+The wire format, tiers and server behaviour are specified in
+[`../JRay-public-server/SPEC.md`](../JRay-public-server/SPEC.md). **This section
+owns the client half**, which previously lived in that document's §9 — an
+inversion, since those are obligations on this repo.
+
+A Jmanifest is this truth file plus a portable identity block and a cut
+fingerprint, minus the installation-local fields.
+
+### JR-025, JR-026, JR-037 — Server list and resolution
+
+The plugin queries a configured **ordered list**, not a single URL. Per server:
+`Url`, `Name`, `Token` (contribution only), `Enabled`, `AllowContribute`,
+`TrustLevel` (`Full` / `FetchOnly`). A community entry ships pre-configured but
+**disabled**.
+
+**First acceptable wins** — servers are tried in order, and the first result
+clearing the configured tier is taken. Order *is* the user's trust ranking, made
+explicit. Best-match-across-all would multiply egress and leak the library to
+more parties for a gain the ordering already expresses.
+
+**For a series, first-match applies per episode** (JR-026): fetch the bundle from
+server 1, then query server 2 only for what is still missing. Series are commonly
+split across sources, and this is where multiple servers earn their keep.
+
+**Failure isolation** (JR-037): an unreachable or failing server is skipped after
+a short timeout (5 s connect, 30 s read) and marked failed with exponential
+backoff. One dead server must never stall a library sweep; failures surface
+per-server in the config page.
+
+**Current:**
+[`ManifestServer`](Jellyfin.Plugin.JRay/Configuration/ManifestServer.cs) and
+[`PluginConfiguration`](Jellyfin.Plugin.JRay/Configuration/PluginConfiguration.cs)
+model all of this. **Gap:** nothing consumes them — there is no HTTP client.
+
+### JR-027 … JR-029 — Every server is untrusted
+
+Everything in the server spec §5a is a property of a *correctly operated* server.
+Pointing the plugin at an arbitrary URL inherits none of it. jRay therefore
+re-applies client-side what a server applies on upload, **including for the
+default server**:
+
+- **JR-027 — validate on receipt.** Downloaded manifests go through the same
+  strict schema as uploads: unknown fields rejected, sizes capped, and windows
+  bounds-checked against the item's real runtime. A manifest is never trusted
+  because a server served it.
+- **JR-028 — size caps enforced while streaming**, so an unbounded body is
+  aborted rather than buffered. 2 MiB single manifest, 25 MiB bundle.
+- **JR-029 — HTTPS required** for non-loopback servers, with certificate
+  validation never disabled. A plaintext server would let any intermediary
+  rewrite actor overlays.
+- **`TrustLevel: FetchOnly`** — the default for user-added servers — accepts
+  manifests but never contributes and never sends inventory beyond the single
+  item queried.
+
+The honest framing for the config page: *adding a third-party server means
+trusting its operator not to serve you deliberately wrong actor data.* The
+controls above bound the damage to bad overlay content; they cannot make wrong
+data right.
+
+### JR-030 — Offsets are applied before storage
+
+When a match carries a non-zero `offset` (the `audio` tier — §8), the plugin
+**must** add it to every scene window before storing.
+
+**The stored truth file is always in the local file's own timebase.** This is
+what keeps the offset out of the read path entirely: `Timeline`, `jray?t=` and
+the overlay never learn that an offset existed. An offset applied at read time
+would have to be applied identically in three places and would be wrong in the
+fourth.
+
+### JR-031, JR-032 — Endpoints
+
+Mirroring the existing Truth and Tasks controllers:
+
+| Route | Purpose |
+|---|---|
+| `POST /Plugins/JRay/Items/{itemId}/Fetch` | Resolve across servers in order; on a match at or above the configured tier, apply JR-030 and store via the managed store |
+| `POST /Plugins/JRay/Series/{seriesId}/Fetch` | Bundle fetch with per-episode gap-filling |
+| `GET /Plugins/JRay/Servers/Status` | Per-server reachability and last error, for the config page |
+| `POST /Plugins/JRay/Items/{itemId}/Identify` | Compute the audio signature and search by content, for items of unknown providence |
+
+**JR-032: `Identify` never stores automatically.** It returns candidate titles
+with scores and offsets; storing one is a separate confirmation step. Content
+identification is a guess about what a file *is*, and a wrong guess silently
+attaches another film's cast to it.
+
+### JR-033 — Scheduled sweep
+
+A scheduled task walks items with no truth data and attempts a fetch, reusing the
+`Tasks/Pending` backlog logic — including its policy rules — and the **batch**
+`exists` endpoint, so a sweep is a handful of requests per server rather than one
+per item.
+
+### JR-034, JR-035 — Contribution
+
+On a `PUT .../Truth` from a local worker, if contribution is enabled: strip
+`movie` and `jellyfin_id`, attach identity from the item's `ProviderIds` and its
+measured runtime, and `POST` to each contribute-enabled server. For a series,
+batch into one bundle upload rather than per-episode posts.
+
+**Stripping is a requirement, not hygiene.** `movie` leaks the contributor's
+directory layout and `jellyfin_id` is a GUID from their database — meaningless
+elsewhere and mildly identifying. The server rejects both, but the plugin must
+not send them in the first place.
+
+**Contribution is never fanned out.** A manifest goes only to servers with
+`AllowContribute` set, each an explicit choice.
+
+**JR-035:** uploads set `Expect: 100-continue`, so a server rejecting on size or
+auth does so before the body is transmitted. This matters most for bundles, where
+a rejected upload would otherwise push tens of MiB pointlessly.
+
+### JR-036 — Match tier is the user's dial
+
+The configured minimum tier (`audio` / `runtime` / `loose`) gates what may be
+stored. A `loose` match — runtimes within ±30 s — is plausibly a different trim
+of the same cut, so it is **surfaced as a caveat in the UI**, not applied
+silently. Per JR-010 the tier is recorded with the stored truth, which is what
+makes surfacing it possible after the fetch has finished.
+
+**There is no `exact` tier here, and the plugin sends no `video_hash`.** The
+server spec §3 defines `exact` as an equal OpenSubtitles file hash, and it is the
+strongest *technical* signal available — it identifies a specific file, so it
+cannot produce a false positive. That is exactly why it is withdrawn.
+
+A TMDB id discloses "some copy of this film", which is what a library catalogue
+discloses. A file hash discloses **this exact release**, which turns a catalogue
+lookup into a release-identification service and turns a server's database into a
+mapping from file fingerprints to the instances holding them. That is a far more
+specific disclosure than PR-005 permits, and a dataset no volunteer operator
+should be asked to hold.
+
+The audio signature is the deliberate replacement: derived from *content*, it
+identifies the **cut** rather than the copy, so two different encodes of the same
+edit agree. It answers the question the exchange needs — "do these timings apply
+to this media?" — without answering the one it must not. `audio` is therefore the
+top tier.
+
+A server may still hold hashes contributed by other clients; this plugin simply
+never participates, and `MatchTier` has no `Exact` member so no code path can
+come to depend on one.
+
+**Current:** `MinimumMatchTier` exists in configuration, defaulting to `runtime`,
+and `ManifestExchangeClient` rejects a below-tier match. **Gap:** the caveat is
+returned by the fetch endpoint but not yet displayed in the overlay.
+
+---
+
+## 7. Egress and privacy — JR-038 … JR-041
+
+Contribution reveals to a server operator that some instance holds a given title.
+Fetching reveals the same. That is inherent to the exchange — which is why the
+requirements here bound it rather than claim to remove it.
+
+- **JR-038 — opt-in, off by default.** Manifest sharing, contribution and audio
+  signatures are three separate switches, all default off, and the pre-configured
+  community server ships **disabled**. No traffic leaves an installation until an
+  admin acts.
+- **JR-039 — no library-wide inventory in one request.** The batch `exists`
+  endpoint is capped at 100 items and sweeps are paced. A single request
+  enumerating a library is a fingerprint of it, which is the thing PR-005 exists
+  to prevent.
+- **JR-040 — the config page says plainly that each configured server multiplies
+  the exposure.** First-match resolution limits it — later servers are queried
+  only for what earlier ones lacked — and that is worth stating too.
+- **JR-041 — the plugin never touches gallery data.** No reference faces, no
+  embeddings, fetched or stored or transmitted. There is no such code path and
+  there must not be one (SR-005). Verified by static check, mirroring the
+  server's UR-012.
+
+**Current:** JR-038 holds — every switch defaults off. JR-041 holds vacuously,
+there being no gallery code. **Gap:** JR-039 and JR-040 are unimplemented,
+alongside the exchange client itself.
+
+---
+
+## 8. Audio signature — JR-042 … JR-045
+
+A content-derived fingerprint from the centre of a media file, used to identify a
+file of unknown providence and to recover the time offset between differently
+trimmed releases of the same cut. Construction is specified in
+[`../JRay-public-server/SPEC.md` §3](../JRay-public-server/SPEC.md) and must be
+implemented **exactly**:
+
+1. Decode a 120 s window centred on the midpoint (`runtime/2 ± 60 s`) — avoiding
+   logos and cold opens at the head, credits at the tail.
+2. Downmix to mono, resample to 11025 Hz.
+3. STFT: 4096-sample frame, 1024-sample hop (~93 ms, ~1290 frames), Hann window.
+4. Log-magnitude spectrum over 300–3000 Hz.
+5. 32 logarithmically spaced bins; record peak-bin index plus a 2-bit energy
+   class.
+6. One byte per frame → ~1290-byte array, base64-encoded.
+
+**JR-042 — no new dependency.** FFmpeg performs decode, downmix and resample,
+using the binary Jellyfin already ships, reached via `IMediaEncoder.EncoderPath`
+from `MediaBrowser.Controller.MediaEncoding`. The plugin implements only a small
+fixed FFT and bin-peak extraction.
+
+**JR-043 — bit-exactness is verified, not assumed.** The pipeline computes this
+signature too (extraction `IR-004`), deliberately: files never processed locally
+still get one from the plugin. Two independent implementations of one fingerprint
+are only useful if they agree exactly, so a **golden-vector fixture is shared
+between the two repos** — a short WAV and its expected signature, committed in
+both. It is CPU-only DSP, which is why this cross-repo check can be a binding CI
+test rather than an aspiration. Extraction's counterpart is `IR-005`.
+
+**JR-044 — media shorter than 120 s.** The window underflows, so **no signature
+is emitted and no sync offset is applied**. Such items fall back to the runtime
+tier, which is adequate: a 90-second extra is not content whose cut alignment
+matters. Both producers must apply the identical rule, or they diverge
+on exactly the short items most likely to be misidentified. Extraction's
+counterpart is `IR-007`.
+
+**JR-045 — the signature carries its own `v1:` prefix**, separate from
+`schema_version`. Emit and honour it, so a future change to the DSP chain is
+*detectable* rather than silently producing non-matching signatures. Extraction's
+counterpart is `IR-008`.
+
+Matching — sliding ±600 frames (≈±56 s), scoring the fraction of overlapping
+frames whose peak bin matches — is a **consumer** concern and belongs to this
+plugin. Offsets are applied client-side per JR-030; manifests are never
+rewritten.
+
+**Current:** `ComputeAudioSignatures` exists as a configuration switch. **Gap:**
+entire requirement, both computation and matching.
+
+---
+
+## 9. Human-in-the-loop association — JR-046
+
+*Proposed. See [system spec](scripts/vendor/jray-project/SPEC.md) §4, which owns the design.*
+
+The pipeline produces **unidentified tracks** — a face that is genuinely someone,
+sustained across many frames, that the gallery cannot name. A user watching the
+film usually knows exactly who it is. jRay's contribution is the review UI: show
+a cluster's context crops, let the user pick from the title's cast or search
+TMDB, and record the association for extraction to ingest into the local gallery.
+
+**The unit of review is a person, not a track.** Unknown tracks are clustered
+upstream (`AR-021`), so the question is "who is this person, who appears in these
+twelve places?" rather than twelve disconnected questions. One answer resolves
+the cluster.
+
+Deliberately left as a single `TBD` row rather than decomposed. It depends on
+extraction `AR-021`/`AR-022` landing, and on **system open question 2** — whether
+unidentified presence is published in the truth file at all, which determines
+whether this UI's work queue arrives with the truth data or needs a separate
+channel. Decomposing now would fix an interface against an undecided upstream.
+
+---
+
+## 10. Client: pushing results from a remote worker
+
+Reference material for worker authors; the requirements are JR-009 and JR-015.
+
+**1. Authenticate.** Create an Administrator API key (Dashboard → API Keys) and
+send it as `X-Emby-Token: <key>` or
+`Authorization: MediaBrowser Token="<key>"`.
+
+**2. Find work.** Poll `GET /Plugins/JRay/Tasks/Pending?limit=10` rather than
+walking the library and checking each item.
+
+**3. Resolve the item id.** The push endpoint is keyed by Jellyfin item GUID, not
+path:
 
 ```
 GET /Items?Recursive=true&Fields=Path&IncludeItemTypes=Movie,Episode
 ```
 
-(use `&ParentId=<library-id>` to narrow the search if the library is large).
+Match `Path` against the file you processed — which requires the worker to see
-Each returned item DTO has `Id` (the GUID) and `Path`. Match `Path` against
+the file at the *same path* Jellyfin does; translate first if it mounts the
-the absolute path of the file you just processed — note this requires the
+library elsewhere. The mapping is stable until the file moves, so cache
-worker to see the file at the *same path* Jellyfin does (same mount/share);
+`path -> itemId` and re-resolve only on a miss.
-translate paths first if the worker mounts the library elsewhere.
 
-This mapping is stable until the file is moved/re-scanned, so the worker
+**4. Push.** `PUT /Plugins/JRay/Items/{itemId}/Truth` with the truth file body.
-should cache `path -> itemId` and only re-resolve on a cache miss.
+`204` stored (cache invalidated immediately), `400` unsupported
+`schema_version`, `401`/`403` key missing or not an administrator. The `PUT` is
+idempotent, so retrying on a network error is safe.
 
-### 3. Push the truth file
+**5. Optionally remove.** `DELETE /Plugins/JRay/Items/{itemId}/Truth` always
+returns `204`; the item falls back to its sidecar on the next read.
 
-```
+---
-PUT /Plugins/JRay/Items/{itemId}/Truth
-Content-Type: application/json
 
-<truth file JSON, schema_version 1, as produced by result_sink_node>
+## 11. Open questions
-```
 
-- `204 No Content` — stored. Takes effect immediately (any cached read for
+1. **`sample_fps`, `gallery_size` and `pipeline_version` move under
-  this item is invalidated server-side).
+   `extraction.*` in JR-002.** This aligns the truth file with the Jmanifest's
-- `400 Bad Request` — `schema_version` is not `1`.
+   block of the same name, and the bump is breaking regardless. It is a change
-- `401`/`403` — API key missing or not an administrator.
+   this spec proposes rather than one inherited from SR-003's list — confirm, or
-
+   keep them top-level.
-The `PUT` is idempotent (replaces any existing managed truth for the item),
+2. **Does `route` belong in the `jray?t=` envelope?** JR-013 says the response is
-so the worker can safely retry on network errors.
+   extensible and JR-005 says presentation must not over-claim. Exposing belief
-
+   and route would let the overlay caveat a weak claim, but invites a UI that
-### 4. (Optional) Remove pushed data
+   shows a number to a viewer who cannot act on it.
-
+3. **System open question 2 — unidentified presence.** If published, the overlay
-```
+   could show "unidentified person" and JR-046 gets its queue from the truth file
-DELETE /Plugins/JRay/Items/{itemId}/Truth
+   directly. jRay is the consumer that would have to display it, so this repo has
-```
+   a position to state.
-
+4. **Test-ID namespacing.** `UT-nnn`/`IT-nnn` are per-component registers, so
-Always returns `204`. The item falls back to a sidecar `Movie.jray.json` (if
+   `UT-001` will exist in both this repo and `scene-actor-extraction`. Fine while
-any) on the next read.
+   the gate runs per repo; ambiguous the moment a rollup spans them.
-
-## Web client pause overlay
-
-Since Jellyfin has no plugin hook for player UI, JRay injects
-`<script defer src="/Plugins/JRay/ClientScript"></script>` into the web
-client's `index.html` on startup (idempotent, marked with
-`<!-- jray-overlay -->`). The injected script listens for the video player's
-pause event, calls `jray?t=` for the current item and timestamp, and renders
-a small overlay listing on-screen actors. This can be disabled via the
-plugin's "Enable pause overlay" setting, which also removes the injected
-script.

build.yaml

@@ -19,4 +19,9 @@ dotnet_configuration: "Release"
 dotnet_framework: "net9.0"
 project: "Jellyfin.Plugin.JRay/Jellyfin.Plugin.JRay.csproj"
 changelog: >
-  Initial scaffold
+  The pause overlay is now served through the File Transformation plugin, which
+  rewrites the web client's index.html as it is sent. JRay no longer edits that
+  file on disk and there is no fallback: without File Transformation the overlay
+  is disabled and every other feature works normally. Any stale on-disk patch
+  left by an earlier JRay is removed on startup, and the plugin's configuration
+  page now reports whether the dependency is satisfied.

docs/requirements.md

@@ -0,0 +1,350 @@
+# jRay — requirements register
+
+Stable IDs for every requirement in [`../SPEC.md`](../SPEC.md), which holds the
+prose. This file is the **authoritative list**; the CI gate reads its
+denominators from here (see [`../scripts/vendor/jray-project/SPEC.md`](../scripts/vendor/jray-project/SPEC.md) §6).
+
+**IDs are permanent.** A withdrawn requirement is marked `Withdrawn` and its
+number is never reused — renumbering is what produces orphan TRACES tags. This
+register replaces the earlier section-numbering of `SPEC.md`, which gave the
+plugin no way to be traced to and left it outside the chain entirely.
+
+Tag code with `// TRACES: JR-012 | SR-002`.
+
+| Type | Scope |
+|---|---|
+| `JR` | Everything this plugin does — truth format, API, overlay, exchange client |
+| `UT` / `IT` | Unit / integration tests |
+
+## Tests (UT)
+
+| ID | Asserts | Covers | Status |
+|---|---|---|---|
+| UT-001 | Marked tag **and its trailing newline** removed — no blank line accumulates per upgrade cycle | JR-022 | **Passing** |
+| UT-002 | Marked tag with no trailing newline removed | JR-022 | **Passing** |
+| UT-003 | Document without the marker left byte-identical | JR-022 | **Passing** |
+| UT-004 | Removal is idempotent — startup runs it on every boot forever after | JR-022 | **Passing** |
+| UT-005 | **Another plugin's injection left intact** — it is their file too | JR-022 | **Passing** |
+| UT-006 | An unmarked look-alike script tag is left alone — JRay did not write it | JR-022 | **Passing** |
+| UT-007 | No matching rule resolves to `null` | JR-016 | **Passing** |
+| UT-008 | Item rule beats Series rule | JR-016 | **Passing** |
+| UT-009 | **Prioritised series inside an ignored genre — series wins** | JR-016 | **Passing** |
+| UT-010 | Genre matching is case-insensitive | JR-016 | **Passing** |
+| UT-011 | A Series rule valued `Guid.Empty` does not swallow every movie | JR-016 | **Passing** |
+| UT-012 | `TryRegister` returns `false` when File Transformation is absent | JR-023 | **Passing** |
+| UT-013 | …and **warns** naming the install URL, with no "falling back" claim | JR-023 | **Passing** |
+| UT-014 | Overlay disabled ⇒ `index.html` returned unchanged | JR-023 | **Passing** |
+| UT-015 | Null contents return empty rather than throwing — this callback runs on every page another plugin serves | JR-023 | **Passing** |
+| UT-016 | Both bounds **inclusive** — start, interior and end all present | JR-005 | **Passing** |
+| UT-017 | Just outside either bound is absent | JR-005 | **Passing** |
+| UT-018 | A zero-length window is a real sighting, not a degenerate one to discard | JR-005 | **Passing** |
+| UT-019 | **Overlapping windows** — present inside an enclosing window | JR-005 | **Passing** |
+| UT-020 | **Unsorted windows still resolve**; sortedness is a producer guarantee, not a correctness dependency | JR-006 | **Passing** |
+| UT-021 | **Adjacent windows are never merged** — reported once, from two windows | JR-004 | **Passing** |
+| UT-022 | Truth file round-trips with windows byte-identical | JR-004 | **Passing** |
+| UT-023 | 50 actors × 1000 windows: response bounded by actor count, lookup not quadratic | JR-006 | **Passing** |
+| UT-024 | A fetched claim round-trips: server, tier, **offset**, caveat, timestamp | JR-010 | **Passing** |
+| UT-025 | A local push records no server and **no tier** — there is no cut to match | JR-010 | **Passing** |
+| UT-026 | Provenance is **not** written into the truth file | JR-010, JR-004 | **Passing** |
+| UT-027 | `Delete` removes provenance too — no record outliving its claim | JR-010 | **Passing** |
+| UT-028 | Unknown item yields null rather than a fabricated record | JR-010 | **Passing** |
+
+All execute and pass. The suite is also checked to **fail** on deliberate
+mutations, because a suite that has only ever passed is not evidence that it
+tests anything. Three so far, each restored and re-verified afterwards:
+
+| Mutation | Fails | Blast radius |
+|---|---|---|
+| Drop the newline-stripping in `RemoveInjection` | UT-001 | 1 test |
+| Downgrade the missing-dependency warning to `Information` | UT-013 | 1 test |
+| Make the window end bound exclusive (`t < end`) | UT-016, UT-018 | 2 tests |
+| Stop `Delete` removing provenance | UT-027 | 1 test |
+
+The third is the one worth keeping: a single character turns an inclusive window
+into a half-open one, which would drop an actor at exactly the moment a scene
+ends — and nothing else in the suite would have noticed.
+
+`JR` is flat rather than split by theme. The plugin is one deployable with one
+audience, and the thematic grouping lives in the section headings below, where it
+costs nothing and cannot go stale against a prefix.
+
+Status: `Done` · `In Progress` · `Planned` · `TBD` · `Withdrawn`
+
+---
+
+## Truth-file format (JR-001 … JR-007)
+
+jRay **owns** this format ([system spec](../scripts/vendor/jray-project/SPEC.md) §1); extraction is the
+producer and the public server carries a derived envelope. Changes are
+coordinated `schema_version` bumps (SR-003).
+
+| ID | Requirement | Traces to | Priority | Status |
+|---|---|---|---|---|
+| JR-001 | The truth-file format is normatively defined here; other repos reference it rather than restating it | SR-003 | High | In Progress |
+| JR-002 | `schema_version: 2` shape — `extraction.*` provenance block, `cut.*` block, `scenes` as objects carrying belief and route | SR-003 | High | Planned |
+| JR-003 | Reject an unknown `schema_version`, never guess. **Flag day: v2 only**, no dual-accept | SR-003 | High | Planned |
+| JR-004 | A window is a **scene-membership claim**, not a recognition event — never reinterpreted, merged, split or trimmed | **SR-002** | High | **Done** (UT-021, UT-022) |
+| JR-005 | Query semantics: actor present at `t` if any window contains `t`; presentation must not assert instantaneous visibility | **SR-002** | High | **Done** (UT-016…019) |
+| JR-006 | Read path holds up under **numerous** windows — no assumption of a handful of long ones | SR-002 | Medium | **Done** (UT-020, UT-023) |
+| JR-007 | Identity is public identifiers: prefer `jellyfin_id` locally, else resolve `imdb_id`/`tmdb_id` against the item's People `ProviderIds` | SR-001 | High | Done |
+
+## Truth-data sources and precedence (JR-008 … JR-011)
+
+| ID | Requirement | Traces to | Priority | Status |
+|---|---|---|---|---|
+| JR-008 | Discover a sidecar truth file beside the media, by configurable suffix | PR-001 | High | Done |
+| JR-009 | Accept truth data pushed by a remote worker (`PUT`/`DELETE`), admin key | PR-004 | High | Done |
+| JR-010 | Precedence: managed truth (pushed **or** fetched) overrides a sidecar; provenance is recorded so the UI can distinguish the three sources | PR-001 | High | **Done** (UT-024…028) |
+| JR-011 | Loaded truth is cached; any write invalidates the item's cache entry immediately | PR-001 | Medium | Done |
+
+## Read API (JR-012 … JR-014)
+
+| ID | Requirement | Traces to | Priority | Status |
+|---|---|---|---|---|
+| JR-012 | `GET .../Timeline` returns the full truth file for an item | PR-001 | High | Done |
+| JR-013 | `GET .../jray?t=` returns an **extensible** context envelope; consumers ignore unknown keys | PR-001 | High | Done |
+| JR-014 | Authorisation: reads need an authenticated user, admin routes need the Administrator role, only `ClientScript` is anonymous | PR-004 | High | Done |
+
+## Work discovery, policy and coverage (JR-015 … JR-019)
+
+| ID | Requirement | Traces to | Priority | Status |
+|---|---|---|---|---|
+| JR-015 | `Tasks/Pending` serves a random sample of items with no truth data, so pollers spread across the backlog without server-side task state | PR-003 | High | Done |
+| JR-016 | Prioritise/ignore rules scoped `Genre` / `Series` / `Item`; **most specific wins**; scope+value is the unique key | PR-003 | Medium | **Done** (UT-007…011) |
+| JR-017 | Rules steer **work discovery only** — never the overlay or the read endpoints | PR-003 | Medium | Done |
+| JR-018 | Coverage report by media type and genre; ignored items leave the percent-done denominator rather than dragging it down | PR-003 | Medium | Done |
+| JR-019 | Picker endpoints (genres, series, item search) populate the rule editor | PR-003 | Low | Done |
+
+## Player overlay (JR-020 … JR-024)
+
+| ID | Requirement | Traces to | Priority | Status |
+|---|---|---|---|---|
+| JR-020 | Pause overlay: injected client script queries `jray?t=` and renders the scene's cast | **PR-001** | High | Done |
+| JR-021 | **jRay never injects into `index.html` on disk.** File Transformation is a hard dependency; there is no on-disk fallback. The only permitted write is JR-022's removal | PR-004 | High | **Done** |
+| JR-022 | Migration: remove any on-disk patch left by an earlier jRay, identified by the `<!-- jray-overlay -->` marker | PR-004 | High | **Done** (UT-001…006) |
+| JR-023 | Absent the dependency, disable **only** the overlay and say so in the log and the config page; never bundle the assembly | PR-004 | Medium | **Done** (UT-012…015; config page is T4) |
+| JR-024 | Actor names and all server-supplied strings render as **text, never markup** | SR-004 | High | Done |
+
+## Manifest exchange client (JR-025 … JR-037)
+
+Plugin-side requirements for the exchange specified in
+[`../../JRay-public-server/SPEC.md`](../../JRay-public-server/SPEC.md) §9. The
+wire format is the server's; **the client's obligations are jRay's**, and belong
+in this register rather than in the server's spec.
+
+The server's register already anticipates this: its `UR-007` is recorded as
+having "no server-side test and cannot have one — it is a requirement on the
+plugin", to be cross-referenced from the plugin's register once one exists. This
+is that register, and `JR-025` is that row. `UR-007` should now point here and
+stay `In Progress` until `JR-025` is `Done`.
+
+| ID | Requirement | Traces to | Priority | Status |
+|---|---|---|---|---|
+| JR-025 | Query an **ordered list** of servers; first result clearing the configured tier wins — **satisfies `JRay-public-server` UR-007** | PR-006 | High | Done |
+| JR-026 | For a series, first-match applies per **episode** — later servers are queried only for the episodes earlier ones lacked | PR-006 | Medium | Planned |
+| JR-027 | Treat **every** server as untrusted, including the default: re-validate on receipt against the strict upload schema, bounds-check windows against the item's real runtime | SR-004 | High | Done |
+| JR-028 | Enforce response size caps **while streaming** — 2 MiB single, 25 MiB bundle — aborting rather than buffering | SR-004 | High | Done |
+| JR-029 | HTTPS required for non-loopback servers; certificate validation must not be disabled | SR-004 | High | Done |
+| JR-030 | Apply an `audio`-tier `offset` to **every** window before storing — stored truth is always in the local file's timebase, so read paths need no offset awareness | SR-003 | High | Done |
+| JR-031 | Fetch endpoints: item fetch, series bundle fetch, per-server status, content identify | PR-006 | High | Planned |
+| JR-032 | Identify is **never automatic** — storing a candidate is a separate confirmation step | PR-006 | Medium | Planned |
+| JR-033 | Scheduled sweep over items lacking truth data, using the **batch** `exists` endpoint | PR-006 | Medium | Planned |
+| JR-034 | Contribution strips `movie` and `jellyfin_id`, attaches identity from `ProviderIds` plus measured runtime, and posts **only** to contribute-enabled servers — never fanned out | PR-005 | High | Planned |
+| JR-035 | Uploads set `Expect: 100-continue`, so a rejection lands before a bundle body is transmitted | PR-006 | Low | Planned |
+| JR-036 | Minimum accepted match tier is configurable; a `loose` match surfaces as a caveat rather than being applied silently | PR-006 | Medium | In Progress |
+| JR-037 | A server that is unreachable or failing is skipped on a short timeout with backoff; one dead server never stalls a sweep | PR-006 | Medium | Done |
+
+## Egress and privacy (JR-038 … JR-041)
+
+`PR-005` had **no software row in any repo** — it was held structurally, by
+SR-004 and GR-005 both being prohibitions. jRay is the component that actually
+performs egress, so these are the rows that make it verifiable rather than merely
+preserved.
+
+| ID | Requirement | Traces to | Priority | Status |
+|---|---|---|---|---|
+| JR-038 | Every exchange feature is **opt-in and off by default**, including the pre-configured community server | **PR-005** | High | Done |
+| JR-039 | No library-wide inventory in one request: batch `exists` capped at 100 items, sweeps paced | **PR-005** | High | Planned |
+| JR-040 | The config page states plainly that **each configured server multiplies the exposure** | **PR-005** | Medium | Planned |
+| JR-041 | The plugin never fetches, stores, or transmits gallery data — reference faces or embeddings. It has no gallery code path at all | **SR-005** | High | Done |
+
+## Audio signature (JR-042 … JR-045)
+
+Mirror-image of extraction `IR-004`/`IR-005`/`IR-007`/`IR-008`. Both producers
+must agree **bit-for-bit**, so each obligation is stated on both sides rather
+than assumed to be inherited.
+
+| ID | Requirement | Traces to | Priority | Status |
+|---|---|---|---|---|
+| JR-042 | Compute the signature **exactly** per server spec §3, using the FFmpeg binary Jellyfin already ships via `IMediaEncoder.EncoderPath` — no new dependency | SR-003 | Medium | Planned |
+| JR-043 | Golden-vector fixture **shared with the extraction repo**, proving the two implementations are bit-exact | SR-003 | High | Planned |
+| JR-044 | Media shorter than 120 s: emit no signature and apply no sync offset — identical rule in both producers | SR-003 | Low | Planned |
+| JR-045 | Emit and honour the signature's own `v1:` prefix, so a DSP change is detectable rather than silently non-matching | SR-003 | Low | Planned |
+
+## Human-in-the-loop association (JR-046)
+
+| ID | Requirement | Traces to | Priority | Status |
+|---|---|---|---|---|
+| JR-046 | Review UI for unidentified track clusters: show context crops, pick from the title's cast or search TMDB, record the association | [system §4](../scripts/vendor/jray-project/SPEC.md) | Medium | **TBD** |
+
+Deliberately a single placeholder row rather than a decomposed set. It depends on
+extraction `AR-021`/`AR-022` landing, and on system open question 2 (whether
+unidentified presence is published at all) — decomposing it now would fix an
+interface against an undecided upstream.
+
+**It carries tiers (T2 + T4) despite being undesigned, and stays in the coverage
+denominator.** Tiers say *how* it will be verified, which is knowable — an
+association endpoint is CI-testable, the UI is not — without asserting *what*
+the assertions are, which is not. Recording it as T4-only would have been the
+tempting move, because that drops it out of CI scope and lifts the CI
+percentage; it would also have been the 158%-coverage error in miniature, a
+number improved by reclassifying work rather than by doing it. An unbuilt
+requirement should count against coverage until it is built.
+
+---
+
+## Verification strategy
+
+**CI is an Intel N100** ([system spec](../scripts/vendor/jray-project/SPEC.md) §6). Unlike the extraction
+pipeline this costs jRay almost nothing: the plugin is CPU-only managed code, and
+every requirement above except the live-integration ones is executable in CI.
+
+| Tier | Runs in CI | What it covers |
+|---|---|---|
+| **T1 — Unit** | Yes | Parsing, precedence, policy resolution, coverage arithmetic, offset application, audio DSP, schema rejection |
+| **T2 — Host integration** | Yes | Controllers and authorisation against a test host with a faked `ILibraryManager` |
+| **T4 — Live** | **No** | Real Jellyfin + File Transformation + web client; real manifest server round-trip |
+| **static** | Yes | Grep/analyzer checks — e.g. no injection path into `index.html` (JR-021) |
+
+**T3 is deliberately unused.** Executable tiers are declared per repo in
+[`../traceability.toml`](../traceability.toml), so the numbering is a local
+choice — but jRay keeps **T4** for "no CI host can run this" because that is
+what T4 means in `scene-actor-extraction`. A tier number should mean the same
+thing when read across repos; reusing T3 for a live tier here would make a
+cross-repo reader count live-only requirements as covered.
+
+`Jellyfin.Plugin.JRay.Tests` (xUnit, in the solution) carries the T1 tier. It
+builds clean alongside the plugin and all 15 tests pass.
+
+### Running the suite on a box without the web runtime
+
+`dotnet test` from the repo root. Two properties on the test project make that
+work anywhere, and both are load-bearing rather than incidental:
+
+- **`RollForward=LatestMajor`.** The plugin targets `net9.0` to match Jellyfin's
+  ABI, but a machine that can *build* it need not have the 9.0 runtime. Rolling
+  the test host forward keeps the suite runnable without pinning developers to a
+  runtime the plugin does not otherwise need.
+- **`DisableTransitiveFrameworkReferences=true`.** The plugin
+  framework-references `Microsoft.AspNetCore.App` through `Jellyfin.Controller`,
+  and that flows into anything referencing it — so the test host would otherwise
+  demand a web runtime that no version of exists in the Arch repositories for
+  .NET 9 (8 and 10 only).
+- **Explicit `Jellyfin.Controller` / `Jellyfin.Model` references.** The plugin
+  sets `ExcludeAssets=runtime` on both, because at run time the *server* supplies
+  them and shipping copies would risk loading a second, different
+  `MediaBrowser.Common`. The test host is not the server, so it must bring its
+  own — hence the same packages without that exclusion, and only in the test
+  project.
+
+Those two together are what make it work: the first drops the demand for the web
+*framework*, the second supplies the Jellyfin *assemblies*. Cutting the framework
+reference alone is not enough — `ILogger` and `MediaBrowser.Common` live in the
+excluded assets, so anything beyond genuinely dependency-free logic fails to load
+with `FileNotFoundException` at run time rather than at build.
+
+**T2 — controllers and authorisation — is still a separate matter**, since
+instantiating MVC types needs the ASP.NET Core runtime itself, not just its
+reference assemblies. Those tests belong in a second project that keeps the
+framework reference and leans on `RollForward` to reach the 10.0 runtime.
+
+### Per-requirement verification plan
+
+| ID | Tier | Test asserts | Edge cases to cover |
+|---|---|---|---|
+| JR-001 | static | Other repos' specs link here rather than restating the schema | A second copy of the schema anywhere is the failure |
+| JR-002 | T1 | A v2 file round-trips; `scenes` objects retain belief and route | Window with belief exactly at the ownership threshold; all three route values |
+| JR-003 | **T1** | `schema_version` 1 and 3 are both **rejected**, not coerced | Missing field entirely; non-integer value |
+| JR-004 | T1 | Windows are stored and served byte-identical to input | Adjacent windows that "look" mergeable must **not** merge |
+| JR-005 | T1 | `t` exactly on `start` and on `end` are both present | Zero-length window; overlapping windows for one actor |
+| JR-006 | T1 | Response bounded by actor count, not window count; lookup not quadratic | 50 × 1000 windows; **unsorted input still resolves** — sortedness is a producer guarantee, never a correctness dependency |
+| JR-007 | T1 | `jellyfin_id` preferred; falls back to provider ids | All three ids empty → actor still displayable by name |
+| JR-008 | T1 | Sidecar path derived from the item path plus the configured suffix | Item with no path; suffix changed at runtime |
+| JR-009 | T2 | `PUT` stores, `DELETE` removes, both admin-only | `DELETE` on an item with no managed truth is still `204` |
+| JR-010 | T1 | Managed overrides sidecar; provenance survives a round trip and is deleted with its truth | Fetched vs pushed for the same item; **provenance never inside the truth file**; unknown item yields null |
+| JR-011 | T1 | A write invalidates the cached entry immediately | Read, push, read again within the cache window |
+| JR-012 | T2 | Returns the file, or `404` when no source has data | Sidecar present but unparseable |
+| JR-013 | T2 | Envelope shape is stable; extra keys are additive | Item with truth data but no actor present at `t` |
+| JR-014 | T2 | Anonymous request to each admin route is refused | Authenticated non-admin on an admin route |
+| JR-015 | T2 | Sample excludes covered items and clamps `limit` | `limit` of 0 and of 1000; library of missing-path ghosts |
+| JR-019 | T2 | Pickers return `{value,label}`; empty search returns `[]` | Two episodes named "Pilot" — labels must disambiguate |
+| JR-020 | **T4** | Overlay appears on pause and lists the scene cast | Live web client only |
+| JR-016 | T1 | Item beats Series beats Genre | Prioritised series inside an ignored genre — the case that motivated the rule |
+| JR-017 | **T1** | An ignored item still serves its overlay | Rule added after truth data exists |
+| JR-018 | T1 | `covered / (total - ignored)` | Item carrying two genres counts in both rows |
+| JR-021 | **static** | No code path *adds* the script tag to `index.html` | `scripts/checks/no-index-injection.sh`. Removal (JR-022) is the one permitted write, so the check is on injection, not on writing. Verified to **fail** on a reintroduced `Apply()` and on reintroduced `ReplaceLast` injection, not merely to pass today |
+| JR-022 | T1 | A marked legacy patch is removed; unmarked content untouched | Foreign plugin's injection left intact |
+| JR-023 | T1 + **T4** | Absent dependency disables only the overlay, and the log says so | Detection and log content covered by UT-012…015; the config-page banner is T4, verifiable only against a live server |
+| JR-024 | T1 | A name containing markup renders escaped | `<script>` in an actor name from a hostile server |
+| JR-025 | T1 | First result clearing the tier wins; disabled servers skipped | All servers fail; first server returns a below-tier match |
+| JR-026 | T1 | Server 2 queried only for episodes server 1 lacked | Bundle with a gap in the middle of a season |
+| JR-027 | T1 | Unknown field, oversized body, and out-of-range window each rejected | Window ending beyond the item's runtime |
+| JR-028 | T1 | Stream aborts past the cap rather than buffering | Server declaring a small length and sending more |
+| JR-029 | T1 | Plain `http` to a non-loopback host is refused | `http://localhost` allowed; `http://192.168.x` refused |
+| JR-030 | **T1** | Offset added to every window before storage | Negative offset; offset that would push a window below zero |
+| JR-031 | T2 | All four routes exist and are admin-only | — |
+| JR-032 | T1 | `Identify` returns candidates and stores nothing | A single high-confidence candidate still does not auto-store |
+| JR-033 | T1 | Sweep batches through `exists` and paces | Backlog smaller than one batch |
+| JR-034 | **T1** | `movie` and `jellyfin_id` absent from the upload body | Contribution attempted to a `FetchOnly` server must not send |
+| JR-035 | T1 | `Expect: 100-continue` set on uploads | — |
+| JR-036 | T1 | Below-tier match is not stored; `loose` is flagged | Tier configured to `audio` with only a `runtime` match available; **`MatchTier` has no `Exact` member** — the file-hash tier is withdrawn on legal grounds, so a test naming it would not compile |
+| JR-037 | T1 | Failing server skipped, backoff grows | Every server failing must not hang the sweep |
+| JR-038 | **T1** | Every exchange switch defaults off; community server disabled | Fresh config object, no user input |
+| JR-039 | T1 | Batch never exceeds 100 items | Library of 10⁴ items produces a paced sweep |
+| JR-040 | **T4** | Config page states the per-server exposure | Manual review of copy |
+| JR-041 | **static** | No embedding or image field is parsed or stored | Grep-based, mirroring the server's UR-012 |
+| JR-042 | T1 | DSP chain matches the specified parameters exactly | Window, hop, band, bin count each asserted individually |
+| JR-043 | **T1** | Signature matches the shared golden vector **bit-for-bit** | Media < 120 s → no signature; identical result in both repos |
+| JR-044 | T1 | Media < 120 s yields no signature and no offset | Exactly 120 s — the boundary both repos must agree on |
+| JR-045 | T1 | `v1:` emitted; an unknown prefix is refused, not parsed | `v2:` signature from a future producer |
+| JR-046 | T2 + **T4** | *Assertions deferred* — recording an association and persisting it is T2; the review UI itself is T4 | Cannot be written until the truth-file interface for unidentified presence is settled (system open question 2) and AR-021/AR-022 land |
+
+Three are worth singling out. **JR-021** and **JR-041** are static checks because
+both are requirements to *not do something*, and a prohibition is verified by
+absence, not by a passing test. **JR-043** is the cross-repo check: it is the only
+test in this repo whose fixture is shared with another, and it is CPU-only DSP,
+which is exactly why it can be the binding check rather than an aspiration.
+
+---
+
+## Running the gate
+
+The extractor is shared and vendored, never forked — there must only ever be one
+implementation. Everything that varies per repo lives in
+[`../traceability.toml`](../traceability.toml), so the invocation carries no
+flags to drift out of sync between a developer's shell and CI:
+
+```sh
+python3 scripts/vendor/jray-project/scripts/traceability/extract_traces.py \
+    --root . --format coverage
+```
+
+That config declares the `JR` prefix, the languages, the source roots, the
+CI-executable tiers, and the path to the vendored system spec.
+
+Refresh the pinned tooling with
+`git submodule update --remote scripts/vendor/jray-project`.
+
+Two choices in it are worth knowing about. `scripts/checks` is scanned so the
+**static checks carry their own TRACES tags** — an enforcement script is
+evidence for a requirement exactly as a unit test is. And the source roots are
+listed individually rather than as `scripts`, because the latter would walk
+`scripts/vendor/jray-project` and harvest the `AR-nnn` examples in the
+extractor's own docstrings as orphan tags.
+
+`JR` is now what the shared tooling expects too — its example config names
+`jRay: ["JR"]` — so the prefix is settled across all three repos. It was chosen
+because `JRay-public-server` already ships `UR-001…018` and `DR-001…014`, and a
+second repo reusing those prefixes would make `UR-007` ambiguous across
+registers, which is precisely the ID the server's own register asks this one to
+cross-reference (see JR-025).

manifest.json

@@ -7,6 +7,78 @@
     "owner": "dtourolle",
     "category": "General",
     "versions": [
+      {
+        "version": "0.0.0.0",
+        "changelog": "Latest Build",
+        "targetAbi": "10.9.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jRay/releases/download/latest/jray_0.0.0.0.zip",
+        "checksum": "52faba139f29c6a5b0a418845328071a",
+        "timestamp": "2026-07-31T08:05:39Z"
+      },
+      {
+        "version": "0.0.4",
+        "changelog": "Release 0.0.4",
+        "targetAbi": "10.9.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jRay/releases/download/v0.0.4/jray_0.0.4.0.zip",
+        "checksum": "cb9613660b3fe3b730f46c9c7f257333",
+        "timestamp": "2026-07-04T19:47:05Z"
+      },
+      {
+        "version": "0.0.0.0",
+        "changelog": "Latest Build",
+        "targetAbi": "10.9.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jRay/releases/download/latest/jray_0.0.0.0.zip",
+        "checksum": "a76316397228c9d8b8e38fbccad50390",
+        "timestamp": "2026-07-04T19:44:35Z"
+      },
+      {
+        "version": "0.0.3",
+        "changelog": "Release 0.0.3",
+        "targetAbi": "10.9.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jRay/releases/download/v0.0.3/jray_0.0.3.0.zip",
+        "checksum": "da5ded2ee720f7a7f7e15ac092871a91",
+        "timestamp": "2026-07-04T19:11:39Z"
+      },
+      {
+        "version": "0.0.0.0",
+        "changelog": "Latest Build",
+        "targetAbi": "10.9.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jRay/releases/download/latest/jray_0.0.0.0.zip",
+        "checksum": "0d1cc8954a1b0557eb5ec6c368bce486",
+        "timestamp": "2026-07-04T19:10:48Z"
+      },
+      {
+        "version": "0.0.2",
+        "changelog": "Release 0.0.2",
+        "targetAbi": "10.9.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jRay/releases/download/v0.0.2/jray_0.0.2.0.zip",
+        "checksum": "6969ca24f23e66eaffae0b52638fea14",
+        "timestamp": "2026-06-12T18:30:35Z"
+      },
+      {
+        "version": "0.0.0.0",
+        "changelog": "Latest Build",
+        "targetAbi": "10.9.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jRay/releases/download/latest/jray_0.0.0.0.zip",
+        "checksum": "2f8beef54c03cec92a17431615cba604",
+        "timestamp": "2026-06-12T18:26:36Z"
+      },
+      {
+        "version": "0.0.1",
+        "changelog": "Release 0.0.1",
+        "targetAbi": "10.9.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jRay/releases/download/v0.0.1/jray_0.0.1.0.zip",
+        "checksum": "6c0e71d77ebac619920cf93a2c330b8f",
+        "timestamp": "2026-06-12T18:11:18Z"
+      },
+      {
+        "version": "0.0.0.0",
+        "changelog": "Latest Build",
+        "targetAbi": "10.9.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jRay/releases/download/latest/jray_0.0.0.0.zip",
+        "checksum": "6ed76e7fea217cda914a6610c48d7d30",
+        "timestamp": "2026-06-12T18:10:35Z"
+      },
       {
         "version": "0.0.0",
         "changelog": "Release 0.0.0",

scripts/checks/no-index-injection.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+# JR-021 — jRay never injects into index.html on disk.
+#
+# This is a requirement to *not do* something, so it is verified by absence.
+# A unit test cannot show that no code path writes the tag; a grep can.
+#
+# The prohibition is on injection, not on writing: JR-022's migration must write
+# to index.html in order to remove a legacy patch. So the check is for code that
+# *adds* the script tag, not for File.Write* generally.
+#
+# TRACES: JR-021 | PR-004
+set -euo pipefail
+
+cd "$(dirname "$0")/../.."
+src="Jellyfin.Plugin.JRay"
+status=0
+
+# The injection is "script tag + marker" written back to the file. The removal
+# path also names both, so match on the concatenation that builds a patched
+# document rather than on the constants themselves.
+if grep -rn --include='*.cs' -E '(ScriptTag|Injected)[[:space:]]*\+.*BodyClose|ReplaceLast|"</body>"[[:space:]]*,' "$src" \
+        | grep -v 'FileTransformationRegistration.cs'; then
+    echo "FAIL (JR-021): index.html injection logic found outside the File Transformation callback." >&2
+    status=1
+fi
+
+# WebClientPatchService is removal-only. Any write there must be the cleaned
+# document; a write of a *patched* one is the regression this guards.
+if grep -n -E 'WriteAllText\((?!.*cleaned)' -P "$src/Services/WebClientPatchService.cs" >/dev/null 2>&1; then
+    echo "FAIL (JR-021): WebClientPatchService writes something other than the cleaned document." >&2
+    status=1
+fi
+
+# The disk-patching entry point must not come back.
+if grep -rn --include='*.cs' -E '\bWebClientPatchService\.Apply\b' "$src"; then
+    echo "FAIL (JR-021): the injecting Apply() entry point has been reintroduced." >&2
+    status=1
+fi
+
+if [ "$status" -eq 0 ]; then
+    echo "OK (JR-021): no on-disk injection path."
+fi
+
+exit "$status"

traceability.toml

@@ -0,0 +1,31 @@
+# traceability.toml — per-repo configuration for the shared trace extractor.
+# The extractor itself is vendored at scripts/vendor/jray-project.
+
+# Flat, rather than split by theme as scene-actor-extraction is. The plugin is
+# one deployable with one audience, and JRay-public-server already ships UR/DR
+# — a second repo using those prefixes would make UR-007 ambiguous across
+# registers, and UR-007 is precisely the ID the server asks this register to
+# cross-reference (see JR-025).
+requirement_types = ["JR"]
+
+languages = ["csharp", "javascript"]
+
+# The static checks carry TRACES tags of their own. An enforcement script is
+# evidence for a requirement exactly as a unit test is — JR-021 is a
+# prohibition, and a prohibition can only be verified by absence.
+source_suffixes = [".sh"]
+
+# Explicit roots rather than "scripts", which would walk scripts/vendor and
+# harvest the AR-nnn examples in the extractor's own docstrings as orphan tags.
+source_roots = [
+    "Jellyfin.Plugin.JRay",
+    "Jellyfin.Plugin.JRay.Tests",
+    "scripts/checks",
+]
+
+# jRay has two CI tiers and one live tier. T3 is deliberately unused: T4 keeps
+# the meaning it has in scene-actor-extraction — "no CI host can run this" —
+# so a tier number means the same thing when read across repos.
+ci_executable_tiers = ["T1", "T2", "static"]
+
+system_spec = "scripts/vendor/jray-project/SPEC.md"