Fix release asset upload corrupted by echo of API response

The v1.1.0 release job created the release then died with a jq parse error
before uploading either package.

The runner executes run: steps with a shell whose echo expands backslash
escapes. Passing the API response through `echo "$BODY" | jq` turned the \n
escapes in the release body field into real newlines, producing invalid JSON.
This only surfaced now because the release body became multi-line; every
earlier release had a single-line body with no \n to expand.

Keep the response in a file and read it with jq directly, so no JSON passes
through echo. Also fall back to the existing release for the tag when creation
returns non-2xx, so a partially completed release can be re-run.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.gitea/workflows/build.yaml

@@ -40,23 +40,20 @@ jobs:
         working-directory: build-${{ github.run_id }}
         run: dotnet build Jellyfin.Plugin.JellyLMS.sln --configuration Release --no-restore --no-self-contained /m:1
 
-      - name: Build Jellyfin Plugin
+      - name: Build Jellyfin plugin packages
-        id: jprm
         working-directory: build-${{ github.run_id }}
         run: |
-          mkdir -p artifacts
+          for VARIANT in jf11 jf12; do
-          jprm --verbosity=debug plugin build .
+            ARTIFACT=$(./build-plugin.sh "${VARIANT}")
-          ARTIFACT=$(find . -name "*.zip" -type f -print -quit | sed 's|^\./||')
+            cp "${ARTIFACT}" "artifacts/jellylms_latest_${VARIANT}.zip"
-          LATEST="artifacts/jellylms_latest.zip"
+            echo "Built ${VARIANT}: ${ARTIFACT}"
-          cp "${ARTIFACT}" "${LATEST}"
+          done
-          echo "artifact=${LATEST}" >> $GITHUB_OUTPUT
-          echo "Found artifact: ${ARTIFACT} -> ${LATEST}"
 
-      - name: Upload build artifact
+      - name: Upload build artifacts
         uses: actions/upload-artifact@v3
         with:
           name: jellylms-plugin
-          path: build-${{ github.run_id }}/${{ steps.jprm.outputs.artifact }}
+          path: build-${{ github.run_id }}/artifacts/jellylms_latest_*.zip
           retention-days: 30
           if-no-files-found: error
 

.gitea/workflows/release.yaml

@@ -35,13 +35,6 @@ jobs:
           echo "version_number=${VERSION#v}" >> $GITHUB_OUTPUT
           echo "Building version: ${VERSION}"
 
-      - name: Update build.yaml with version
-        working-directory: release-${{ github.run_id }}
-        run: |
-          VERSION="${{ steps.get_version.outputs.version_number }}"
-          sed -i "s/^version:.*/version: \"${VERSION}\"/" build.yaml
-          cat build.yaml
-
       - name: Cache NuGet packages
         uses: actions/cache@v3
         with:
@@ -57,17 +50,18 @@ jobs:
         working-directory: release-${{ github.run_id }}
         run: dotnet build Jellyfin.Plugin.JellyLMS.sln --configuration Release --no-restore --no-self-contained /m:1
 
-      - name: Build Jellyfin Plugin
+      - name: Build Jellyfin plugin packages
         id: jprm
         working-directory: release-${{ github.run_id }}
         run: |
-          mkdir -p artifacts
+          VERSION="${{ steps.get_version.outputs.version_number }}"
-          jprm --verbosity=debug plugin build ./
+          for VARIANT in jf11 jf12; do
-          ARTIFACT=$(find . -name "*.zip" -type f -print -quit | sed 's|^\./||')
+            ARTIFACT=$(./build-plugin.sh "${VARIANT}" "${VERSION}")
-          ARTIFACT_NAME=$(basename "${ARTIFACT}")
+            echo "${VARIANT}_artifact=${ARTIFACT}" >> $GITHUB_OUTPUT
-          echo "artifact=${ARTIFACT}" >> $GITHUB_OUTPUT
+            echo "${VARIANT}_artifact_name=$(basename "${ARTIFACT}")" >> $GITHUB_OUTPUT
-          echo "artifact_name=${ARTIFACT_NAME}" >> $GITHUB_OUTPUT
+            echo "${VARIANT}_checksum=$(md5sum "${ARTIFACT}" | awk '{print $1}')" >> $GITHUB_OUTPUT
-          echo "Found artifact: ${ARTIFACT}"
+            echo "Built ${VARIANT}: ${ARTIFACT}"
+          done
 
       - name: Create Release
         working-directory: release-${{ github.run_id }}
@@ -81,51 +75,56 @@ jobs:
 
           # Create release using Gitea API
           VERSION="${{ steps.get_version.outputs.version }}"
-          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST \
+          RELEASE_BODY=$(printf '%s\n' \
+            "JellyLMS Jellyfin Plugin ${VERSION}." \
+            "" \
+            "Pick the package matching your server:" \
+            "" \
+            "- \`${{ steps.jprm.outputs.jf11_artifact_name }}\` - Jellyfin 10.11.x" \
+            "- \`${{ steps.jprm.outputs.jf12_artifact_name }}\` - Jellyfin 12.0.x")
+          API_URL="${GITEA_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}"
+
+          # Keep the API response in a file: it contains \n escapes, and `echo` in
+          # this shell expands those into real newlines, which corrupts the JSON.
+          HTTP_CODE=$(curl -s -o release-response.json -w "%{http_code}" -X POST \
             -H "Authorization: token ${GITEA_TOKEN}" \
             -H "Content-Type: application/json" \
-            "${GITEA_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/releases" \
+            "${API_URL}/releases" \
-            -d "$(jq -n --arg tag "$VERSION" --arg name "Release $VERSION" --arg body "JellyLMS Jellyfin Plugin ${VERSION}. See attached files for plugin installation." '{tag_name: $tag, name: $name, body: $body, draft: false, prerelease: false}')")
+            -d "$(jq -n --arg tag "$VERSION" --arg name "Release $VERSION" --arg body "$RELEASE_BODY" '{tag_name: $tag, name: $name, body: $body, draft: false, prerelease: false}')")
 
-          HTTP_CODE=$(echo "$RESPONSE" | tail -n1)
+          if [ "$HTTP_CODE" -lt 200 ] || [ "$HTTP_CODE" -ge 300 ]; then
-          BODY=$(echo "$RESPONSE" | sed '$d')
+            echo "Create release returned HTTP ${HTTP_CODE}:"
-
+            cat release-response.json
-          if [ "$HTTP_CODE" -ge 200 ] && [ "$HTTP_CODE" -lt 300 ]; then
+            echo "Falling back to an existing release for ${VERSION}..."
-            RELEASE_ID=$(echo "$BODY" | jq -r '.id')
+            curl -sf -o release-response.json \
-            echo "Created release with ID: ${RELEASE_ID}"
+              -H "Authorization: token ${GITEA_TOKEN}" \
-          else
+              "${API_URL}/releases/tags/${VERSION}"
-            echo "Failed to create release. HTTP ${HTTP_CODE}"
-            echo "$BODY"
-            exit 1
           fi
 
-          # Upload plugin artifact
+          RELEASE_ID=$(jq -r '.id // empty' release-response.json)
-          echo "Uploading plugin artifact..."
+          if [ -z "${RELEASE_ID}" ]; then
+            echo "Could not determine release ID from:"
+            cat release-response.json
+            exit 1
+          fi
+          echo "Using release ID: ${RELEASE_ID}"
+
+          # Upload plugin artifacts (one per supported Jellyfin generation)
+          for ASSET in \
+            "${{ steps.jprm.outputs.jf11_artifact }}" \
+            "${{ steps.jprm.outputs.jf12_artifact }}"; do
+            echo "Uploading $(basename "${ASSET}")..."
             curl -f -X POST \
               -H "Authorization: token ${GITEA_TOKEN}" \
               -H "Content-Type: application/zip" \
-            --data-binary "@${{ steps.jprm.outputs.artifact }}" \
+              --data-binary "@${ASSET}" \
-            "${GITEA_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/releases/${RELEASE_ID}/assets?name=${{ steps.jprm.outputs.artifact_name }}"
+              "${API_URL}/releases/${RELEASE_ID}/assets?name=$(basename "${ASSET}")"
-
+          done
-          # Upload build.yaml
-          echo "Uploading build.yaml..."
-          curl -f -X POST \
-            -H "Authorization: token ${GITEA_TOKEN}" \
-            -H "Content-Type: application/x-yaml" \
-            --data-binary "@build.yaml" \
-            "${GITEA_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/releases/${RELEASE_ID}/assets?name=build.yaml"
 
+          rm -f release-response.json
           echo "Release created successfully!"
           echo "View at: ${GITEA_URL}/${REPO_OWNER}/${REPO_NAME}/releases/tag/${{ steps.get_version.outputs.version }}"
 
-      - name: Calculate checksum
-        id: checksum
-        working-directory: release-${{ github.run_id }}
-        run: |
-          CHECKSUM=$(md5sum "${{ steps.jprm.outputs.artifact }}" | awk '{print $1}')
-          echo "checksum=${CHECKSUM}" >> $GITHUB_OUTPUT
-          echo "MD5 checksum: ${CHECKSUM}"
-
       - name: Update manifest.json
         working-directory: release-${{ github.run_id }}
         run: |
@@ -135,30 +134,35 @@ jobs:
           git checkout master
 
           VERSION="${{ steps.get_version.outputs.version_number }}"
-          CHECKSUM="${{ steps.checksum.outputs.checksum }}"
           TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
-          ARTIFACT_NAME="${{ steps.jprm.outputs.artifact_name }}"
           REPO_OWNER="${{ github.repository_owner }}"
           REPO_NAME="${{ github.event.repository.name }}"
           GITEA_URL="${{ github.server_url }}"
-          DOWNLOAD_URL="${GITEA_URL}/${REPO_OWNER}/${REPO_NAME}/releases/download/${{ steps.get_version.outputs.version }}/${ARTIFACT_NAME}"
+          RELEASE_URL="${GITEA_URL}/${REPO_OWNER}/${REPO_NAME}/releases/download/${{ steps.get_version.outputs.version }}"
 
-          # Create the new version entry
+          # One manifest entry per Jellyfin generation. Jellyfin filters the list by
-          NEW_VERSION=$(cat <<EOF
+          # targetAbi, so both entries can share the same version number.
-          {
+          add_version() {
-            "version": "${VERSION}",
+            local abi="$1" artifact_name="$2" checksum="$3"
-            "changelog": "Release ${VERSION}",
+            jq \
-            "targetAbi": "10.10.0.0",
+              --arg version "${VERSION}" \
-            "sourceUrl": "${DOWNLOAD_URL}",
+              --arg abi "${abi}" \
-            "checksum": "${CHECKSUM}",
+              --arg url "${RELEASE_URL}/${artifact_name}" \
-            "timestamp": "${TIMESTAMP}"
+              --arg checksum "${checksum}" \
-          }
+              --arg timestamp "${TIMESTAMP}" \
-          EOF
+              '.[0].versions = [{
-          )
+                 version: $version,
-
+                 changelog: "Release \($version)",
-          # Prepend new version to the versions array in manifest.json
+                 targetAbi: $abi,
-          jq --argjson newver "${NEW_VERSION}" '.[0].versions = [$newver] + .[0].versions' manifest.json > manifest.tmp.json
+                 sourceUrl: $url,
+                 checksum: $checksum,
+                 timestamp: $timestamp
+               }] + .[0].versions' manifest.json > manifest.tmp.json
             mv manifest.tmp.json manifest.json
+          }
+
+          add_version "10.11.0.0" "${{ steps.jprm.outputs.jf11_artifact_name }}" "${{ steps.jprm.outputs.jf11_checksum }}"
+          add_version "12.0.0.0" "${{ steps.jprm.outputs.jf12_artifact_name }}" "${{ steps.jprm.outputs.jf12_checksum }}"
 
           echo "Updated manifest.json:"
           cat manifest.json

Dockerfile.builder

@@ -3,7 +3,7 @@
 # Build: docker build -f Dockerfile.builder -t gitea.tourolle.paris/dtourolle/jellylms-builder:latest .
 # Push:  docker push gitea.tourolle.paris/dtourolle/jellylms-builder:latest
 
-FROM mcr.microsoft.com/dotnet/sdk:9.0
+FROM mcr.microsoft.com/dotnet/sdk:10.0
 
 RUN apt-get update && apt-get install -y \
     python3 \

Jellyfin.Plugin.JellyLMS/Jellyfin.Plugin.JellyLMS.csproj

@@ -1,7 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
+  <!--
+    Multi-targeted against the two supported Jellyfin server generations:
+      net9.0  -> Jellyfin 10.11.x (targetAbi 10.11.0.0)
+      net10.0 -> Jellyfin 12.0.x  (targetAbi 12.0.0.0)
+    jprm builds one framework at a time (see build.yaml / build.jf12.yaml).
+  -->
   <PropertyGroup>
-    <TargetFramework>net9.0</TargetFramework>
+    <TargetFrameworks>net9.0;net10.0</TargetFrameworks>
     <RootNamespace>Jellyfin.Plugin.JellyLMS</RootNamespace>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
@@ -10,8 +16,8 @@
     <CodeAnalysisRuleSet>../jellyfin.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'net9.0'">
-    <PackageReference Include="Jellyfin.Controller" Version="10.11.0" >
+    <PackageReference Include="Jellyfin.Controller" Version="10.11.0">
       <ExcludeAssets>runtime</ExcludeAssets>
     </PackageReference>
     <PackageReference Include="Jellyfin.Model" Version="10.11.0">
@@ -19,6 +25,15 @@
     </PackageReference>
   </ItemGroup>
 
+  <ItemGroup Condition="'$(TargetFramework)' == 'net10.0'">
+    <PackageReference Include="Jellyfin.Controller" Version="12.0.0">
+      <ExcludeAssets>runtime</ExcludeAssets>
+    </PackageReference>
+    <PackageReference Include="Jellyfin.Model" Version="12.0.0">
+      <ExcludeAssets>runtime</ExcludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.556" PrivateAssets="All" />

Jellyfin.Plugin.JellyLMS/Services/LmsDeviceDiscoveryService.cs

@@ -211,7 +211,13 @@ public class LmsDeviceDiscoveryService : IHostedService, IDisposable
             SupportsPersistentIdentifier = true
         };
 
+#if NET10_0_OR_GREATER
+        // Jellyfin 12 added a controlling session parameter; an empty value skips the
+        // "can control" assertion, which is what we want for a server-side registration.
+        sessionManager.ReportCapabilities(string.Empty, session.Id, capabilities);
+#else
         sessionManager.ReportCapabilities(session.Id, capabilities);
+#endif
 
         // Track this device
         _registeredDeviceIds[player.MacAddress] = deviceId;

Jellyfin.Plugin.JellyLMS/Web/remote-button.js

@@ -1,4 +1,7 @@
 (function () {
+    var hasAccess = false;
+    var panel = null;
+
     function getAuthToken() {
         try {
             var creds = JSON.parse(localStorage.getItem('jellyfin_credentials'));
@@ -9,36 +12,293 @@
         }
     }
 
-    function addButton() {
+    function api(path, options) {
-        if (document.getElementById('jellylms-remote-btn')) {
+        var token = getAuthToken();
+        var opts = Object.assign({ headers: {} }, options);
+        if (token) {
+            opts.headers['X-Emby-Token'] = token;
+        }
+
+        if (opts.body && typeof opts.body === 'object') {
+            opts.body = JSON.stringify(opts.body);
+            opts.headers['Content-Type'] = 'application/json';
+        }
+
+        return fetch('/JellyLms' + path, opts);
+    }
+
+    function checkAccess() {
+        return api('/RemoteControl/Access')
+            .then(function (r) { return r.ok; })
+            .catch(function () { return false; });
+    }
+
+    // ---------- panel ----------
+
+    function createPanel(anchorBtn) {
+        var rect = anchorBtn.getBoundingClientRect();
+        var p = document.createElement('div');
+        p.id = 'jellylms-panel';
+        p.style.cssText = [
+            'position:fixed',
+            'top:' + (rect.bottom + 4) + 'px',
+            'right:' + (window.innerWidth - rect.right) + 'px',
+            'width:300px',
+            'max-height:70vh',
+            'overflow-y:auto',
+            'background:#1c1c1c',
+            'border:1px solid #333',
+            'border-radius:4px',
+            'box-shadow:0 4px 24px rgba(0,0,0,.7)',
+            'z-index:999999',
+            'font-family:inherit',
+            'font-size:14px',
+            'color:#ddd',
+            'padding:12px',
+        ].join(';');
+        return p;
+    }
+
+    function el(tag, css, html) {
+        var e = document.createElement(tag);
+        if (css) { e.style.cssText = css; }
+        if (html != null) { e.innerHTML = html; }
+        return e;
+    }
+
+    function renderError(p, msg) {
+        p.innerHTML = '<div style="color:#f44;padding:8px">' + msg + '</div>';
+    }
+
+    function renderPlayers(p, players) {
+        p.innerHTML = '';
+
+        // ---- Players ----
+        p.appendChild(el('div',
+            'font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#888;margin-bottom:8px',
+            'Players'));
+
+        players.forEach(function (player) {
+            // name row: status dot + name + power button
+            var row = el('div', 'display:flex;align-items:center;gap:8px;margin-bottom:6px');
+
+            row.appendChild(el('span',
+                'width:8px;height:8px;border-radius:50%;flex-shrink:0;background:' +
+                (player.isConnected ? '#4caf50' : '#555')));
+
+            var label = player.name || player.macAddress;
+            row.appendChild(el('span',
+                'flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap',
+                label));
+
+            var pwrBtn = el('button',
+                'background:none;border:1px solid #555;border-radius:3px;color:#ddd;' +
+                'padding:2px 7px;cursor:pointer;font-size:12px;flex-shrink:0',
+                player.isPoweredOn ? 'Off' : 'On');
+            pwrBtn.title = player.isPoweredOn ? 'Power off' : 'Power on';
+            pwrBtn.addEventListener('click', function () {
+                var endpoint = player.isPoweredOn
+                    ? '/Players/' + player.macAddress + '/PowerOff'
+                    : '/Players/' + player.macAddress + '/PowerOn';
+                api(endpoint, { method: 'POST' }).then(function () { refresh(p); });
+            });
+            row.appendChild(pwrBtn);
+            p.appendChild(row);
+
+            // volume row — show when powered on
+            if (player.isPoweredOn) {
+                var volRow = el('div',
+                    'display:flex;align-items:center;gap:8px;margin-bottom:8px;padding-left:16px');
+
+                volRow.appendChild(el('span',
+                    'color:#888;font-size:16px;font-family:"Material Icons";line-height:1',
+                    'volume_up'));
+
+                var slider = document.createElement('input');
+                slider.type = 'range';
+                slider.min = 0;
+                slider.max = 100;
+                slider.value = player.volume;
+                slider.style.cssText = 'flex:1;accent-color:#00a4dc';
+                slider.addEventListener('change', function () {
+                    api('/Players/' + player.macAddress + '/Volume', {
+                        method: 'POST',
+                        body: { volume: parseInt(slider.value, 10) }
+                    });
+                });
+                volRow.appendChild(slider);
+
+                var volVal = el('span', 'color:#888;font-size:12px;width:28px;text-align:right',
+                    player.volume + '%');
+                slider.addEventListener('input', function () { volVal.textContent = slider.value + '%'; });
+                volRow.appendChild(volVal);
+
+                p.appendChild(volRow);
+            }
+        });
+
+        // ---- Sync Groups ----
+        var synced = {};
+        players.forEach(function (pl) {
+            if (pl.syncMaster) { synced[pl.macAddress] = true; }
+            if (pl.syncSlaves && pl.syncSlaves.length) {
+                synced[pl.macAddress] = true;
+                pl.syncSlaves.forEach(function (m) { synced[m] = true; });
+            }
+        });
+
+        var masters = players.filter(function (pl) {
+            return pl.syncSlaves && pl.syncSlaves.length > 0;
+        });
+
+        if (masters.length > 0) {
+            p.appendChild(el('div', 'border-top:1px solid #333;margin:8px 0'));
+            p.appendChild(el('div',
+                'font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#888;margin-bottom:8px',
+                'Sync Groups'));
+
+            masters.forEach(function (master) {
+                var slaveNames = master.syncSlaves.map(function (mac) {
+                    var found = players.find(function (pl) { return pl.macAddress === mac; });
+                    return found ? (found.name || mac) : mac;
+                });
+                var label = (master.name || master.macAddress) + ' + ' + slaveNames.join(', ');
+
+                var grow = el('div', 'display:flex;align-items:center;gap:8px;margin-bottom:8px');
+                grow.appendChild(el('span',
+                    'flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px',
+                    label));
+
+                var dissolveBtn = el('button',
+                    'background:none;border:1px solid #555;border-radius:3px;color:#f88;' +
+                    'padding:2px 7px;cursor:pointer;font-size:12px;flex-shrink:0',
+                    'Unsync');
+                dissolveBtn.addEventListener('click', function () {
+                    api('/SyncGroups/' + master.macAddress, { method: 'DELETE' })
+                        .then(function () { refresh(p); });
+                });
+                grow.appendChild(dissolveBtn);
+                p.appendChild(grow);
+            });
+        }
+
+        // ---- Create Sync Group ----
+        var unsynced = players.filter(function (pl) { return !synced[pl.macAddress]; });
+
+        if (unsynced.length >= 2) {
+            p.appendChild(el('div', 'border-top:1px solid #333;margin:8px 0'));
+            p.appendChild(el('div',
+                'font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#888;margin-bottom:8px',
+                'Create Sync Group'));
+
+            var checkboxes = [];
+            unsynced.forEach(function (pl) {
+                var crow = el('div', 'display:flex;align-items:center;gap:8px;margin-bottom:6px');
+                var cb = document.createElement('input');
+                cb.type = 'checkbox';
+                cb.style.accentColor = '#00a4dc';
+                cb.dataset.mac = pl.macAddress;
+                checkboxes.push(cb);
+                crow.appendChild(cb);
+                crow.appendChild(el('span', 'flex:1', pl.name || pl.macAddress));
+                p.appendChild(crow);
+            });
+
+            var syncBtn = el('button',
+                'margin-top:6px;width:100%;background:#00a4dc;border:none;border-radius:3px;' +
+                'color:#fff;padding:5px 0;cursor:pointer;font-size:13px',
+                'Sync Selected');
+            syncBtn.addEventListener('click', function () {
+                var selected = checkboxes.filter(function (cb) { return cb.checked; });
+                if (selected.length < 2) { return; }
+                var macs = selected.map(function (cb) { return cb.dataset.mac; });
+                api('/SyncGroups', {
+                    method: 'POST',
+                    body: { masterMac: macs[0], slaveMacs: macs.slice(1) }
+                }).then(function () { refresh(p); });
+            });
+            p.appendChild(syncBtn);
+        }
+    }
+
+    function refresh(p) {
+        p.innerHTML = '<div style="color:#888;padding:8px">Loading…</div>';
+        api('/Players')
+            .then(function (r) { return r.json(); })
+            .then(function (players) { renderPlayers(p, players); })
+            .catch(function () { renderError(p, 'Failed to load players.'); });
+    }
+
+    function togglePanel(btn) {
+        if (panel) {
+            panel.remove();
+            panel = null;
             return;
         }
 
-        var btn = document.createElement('a');
+        panel = createPanel(btn);
-        btn.id = 'jellylms-remote-btn';
+        document.body.appendChild(panel);
-        btn.href = '/JellyLms/RemoteControl';
+        refresh(panel);
-        btn.title = 'Multi-room Remote';
-        btn.textContent = '🔊';
-        btn.style.cssText = 'position:fixed;bottom:20px;right:20px;width:48px;height:48px;' +
-            'border-radius:50%;background:#00a4dc;color:#fff;display:flex;' +
-            'align-items:center;justify-content:center;font-size:22px;' +
-            'text-decoration:none;z-index:99999;box-shadow:0 2px 8px rgba(0,0,0,0.5);';
-        document.body.appendChild(btn);
     }
 
+    function closePanel() {
+        if (panel) {
+            panel.remove();
+            panel = null;
+        }
+    }
+
+    // ---------- header button ----------
+
+    function addButton(headerRight) {
+        if (headerRight.querySelector('.headerLmsRemoteButton')) {
+            return;
+        }
+
+        var btn = document.createElement('button');
+        btn.setAttribute('is', 'paper-icon-button-light');
+        btn.setAttribute('type', 'button');
+        btn.className = 'headerLmsRemoteButton headerButton headerButtonRight paper-icon-button-light';
+        btn.title = 'Multi-room Remote';
+        btn.innerHTML = '<span class="material-icons speaker_group" aria-hidden="true"></span>';
+        btn.addEventListener('click', function (e) {
+            e.stopPropagation();
+            togglePanel(btn);
+        });
+
+        var castButton = headerRight.querySelector('.headerCastButton');
+        if (castButton) {
+            headerRight.insertBefore(btn, castButton);
+        } else {
+            headerRight.appendChild(btn);
+        }
+    }
+
+    function tryInject() {
+        if (!hasAccess) { return; }
+        var headerRight = document.querySelector('.headerRight');
+        if (headerRight) { addButton(headerRight); }
+    }
+
+    // ---------- bootstrap ----------
+
     function init() {
-        var token = getAuthToken();
+        checkAccess().then(function (ok) {
-        if (!token) {
+            hasAccess = ok;
-            return;
+            if (!ok) { return; }
-        }
 
-        fetch('/JellyLms/RemoteControl/Access', { headers: { 'X-Emby-Token': token } })
+            tryInject();
-            .then(function (resp) {
+
-                if (resp.ok) {
+            var observer = new MutationObserver(function () {
-                    addButton();
+                if (panel && !document.body.contains(panel)) { panel = null; }
-                }
+                tryInject();
-            })
+            });
-            .catch(function () {});
+            observer.observe(document.body, { childList: true, subtree: true });
+
+            document.addEventListener('click', function (e) {
+                if (panel && !panel.contains(e.target)) { closePanel(); }
+            });
+        });
     }
 
     if (document.readyState === 'loading') {

README.md

@@ -76,10 +76,19 @@ Create and manage synchronized playback groups for multi-room audio:
 
 ## Requirements
 
-- Jellyfin Server 10.10.0 or later
+- Jellyfin Server 10.11.x or 12.0.x
-- .NET 9.0 Runtime
 - Logitech Media Server (LMS) with JSON-RPC API enabled (default on port 9000)
 
+Each release ships two packages, one per Jellyfin generation:
+
+| Package | Jellyfin | targetAbi | Runtime |
+| --- | --- | --- | --- |
+| `jellylms_<version>_jf11.zip` | 10.11.x | `10.11.0.0` | .NET 9.0 |
+| `jellylms_<version>_jf12.zip` | 12.0.x | `12.0.0.0` | .NET 10.0 |
+
+If you install through the plugin repository, Jellyfin picks the matching
+package automatically. For manual installs, download the one for your server.
+
 ## Playback Architecture
 
 JellyLMS uses Jellyfin's native "Play On" (cast) interface to control LMS players. When you select an LMS player from Jellyfin's cast menu, playback is managed through a robust state machine that ensures reliable operation.
@@ -151,13 +160,20 @@ The state machine includes automatic retry with exponential backoff:
 git clone https://gitea.tourolle.paris/dtourolle/jellyLMS.git
 cd jellyLMS
 
-# Build
+# Build both target frameworks
 dotnet build Jellyfin.Plugin.JellyLMS.sln -c Release
 
-# The DLL will be in:
+# The DLLs will be in:
-# Jellyfin.Plugin.JellyLMS/bin/Release/net9.0/
+# Jellyfin.Plugin.JellyLMS/bin/Release/net9.0/   (Jellyfin 10.11.x)
+# Jellyfin.Plugin.JellyLMS/bin/Release/net10.0/  (Jellyfin 12.0.x)
+
+# Or produce installable plugin packages (requires jprm)
+./build-plugin.sh jf11
+./build-plugin.sh jf12
 ```
 
+Building requires the .NET 10 SDK, which can target both `net9.0` and `net10.0`.
+
 ## Configuration
 
 1. Navigate to Jellyfin Dashboard → Plugins → JellyLMS
@@ -293,8 +309,8 @@ Jellyfin.Plugin.JellyLMS/
 ### Building for Development
 
 ```bash
-# Build in debug mode
+# Build in debug mode (use -f net10.0 for a Jellyfin 12 server)
-dotnet build Jellyfin.Plugin.JellyLMS.sln
+dotnet build Jellyfin.Plugin.JellyLMS.sln -f net9.0
 
 # Copy to Jellyfin plugins directory
 cp Jellyfin.Plugin.JellyLMS/bin/Debug/net9.0/Jellyfin.Plugin.JellyLMS.dll \

build-plugin.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+#
+# Package the JellyLMS plugin for one Jellyfin server generation.
+#
+#   ./build-plugin.sh jf11 [version]   -> Jellyfin 10.11.x, net9.0
+#   ./build-plugin.sh jf12 [version]   -> Jellyfin 12.0.x,  net10.0
+#
+# jprm always reads ./build.yaml, so this temporarily rewrites the targetAbi and
+# framework fields for the requested variant and restores the file afterwards.
+# The resulting zip is written to artifacts/ with a variant suffix, and its path
+# is printed on stdout.
+set -euo pipefail
+
+VARIANT="${1:-}"
+VERSION="${2:-}"
+
+case "${VARIANT}" in
+    jf11) TARGET_ABI="10.11.0.0"; FRAMEWORK="net9.0" ;;
+    jf12) TARGET_ABI="12.0.0.0";  FRAMEWORK="net10.0" ;;
+    *) echo "usage: $0 <jf11|jf12> [version]" >&2; exit 1 ;;
+esac
+
+cd "$(dirname "$0")"
+
+if [ -z "${VERSION}" ]; then
+    VERSION=$(sed -n 's/^version:[[:space:]]*"\{0,1\}\([^"]*\)"\{0,1\}[[:space:]]*$/\1/p' build.yaml)
+fi
+
+# jprm normalises the version to four components for the artifact name.
+FULL_VERSION="${VERSION}"
+while [ "$(printf '%s' "${FULL_VERSION}" | tr -cd '.' | wc -c)" -lt 3 ]; do
+    FULL_VERSION="${FULL_VERSION}.0"
+done
+
+BACKUP=$(mktemp)
+cp build.yaml "${BACKUP}"
+trap 'cp "${BACKUP}" build.yaml; rm -f "${BACKUP}"' EXIT
+
+sed -i "s/^version:.*/version: \"${VERSION}\"/" build.yaml
+sed -i "s/^targetAbi:.*/targetAbi: \"${TARGET_ABI}\"/" build.yaml
+sed -i "s/^framework:.*/framework: \"${FRAMEWORK}\"/" build.yaml
+
+echo "Building ${VARIANT}: targetAbi=${TARGET_ABI} framework=${FRAMEWORK} version=${VERSION}" >&2
+
+mkdir -p "artifacts/${VARIANT}"
+jprm --verbosity=debug plugin build ./ --output "artifacts/${VARIANT}" >&2
+
+SRC="artifacts/${VARIANT}/jellylms_${FULL_VERSION}.zip"
+DEST="artifacts/jellylms_${FULL_VERSION}_${VARIANT}.zip"
+mv "${SRC}" "${DEST}"
+rm -rf "artifacts/${VARIANT}"
+
+echo "${DEST}"

jellyfin.ruleset

@@ -100,6 +100,8 @@
         <Rule Id="CA1308" Action="None" />
         <!-- disable warning CA1848: Use the LoggerMessage delegates -->
         <Rule Id="CA1848" Action="None" />
+        <!-- disable warning CA1873: Evaluation of logging argument may be expensive (same rationale as CA1848) -->
+        <Rule Id="CA1873" Action="None" />
         <!-- disable warning CA2101: Specify marshaling for P/Invoke string arguments -->
         <Rule Id="CA2101" Action="None" />
         <!-- disable warning CA2234: Pass System.Uri objects instead of strings -->

manifest.json

@@ -7,6 +7,38 @@
     "owner": "dtourolle",
     "category": "Music",
     "versions": [
+      {
+        "version": "1.0.6",
+        "changelog": "Release 1.0.6",
+        "targetAbi": "10.10.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jellyLMS/releases/download/v1.0.6/jellylms_1.0.6.0.zip",
+        "checksum": "026fae22c793a5e71fb322811d964dfd",
+        "timestamp": "2026-06-17T20:24:41Z"
+      },
+      {
+        "version": "1.0.5",
+        "changelog": "Release 1.0.5",
+        "targetAbi": "10.10.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jellyLMS/releases/download/v1.0.5/jellylms_1.0.5.0.zip",
+        "checksum": "13ecfe05b1a0f4f137211d9b6660f66e",
+        "timestamp": "2026-06-17T19:20:00Z"
+      },
+      {
+        "version": "1.0.4",
+        "changelog": "Release 1.0.4",
+        "targetAbi": "10.10.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jellyLMS/releases/download/v1.0.4/jellylms_1.0.4.0.zip",
+        "checksum": "6db64bf2ad625c735aff5178e0b53894",
+        "timestamp": "2026-06-17T18:44:44Z"
+      },
+      {
+        "version": "1.0.3",
+        "changelog": "Release 1.0.3",
+        "targetAbi": "10.10.0.0",
+        "sourceUrl": "https://gitea.tourolle.paris/dtourolle/jellyLMS/releases/download/v1.0.3/jellylms_1.0.3.0.zip",
+        "checksum": "c6fa1b9f303babb9664e35cca1180985",
+        "timestamp": "2026-06-14T15:48:18Z"
+      },
       {
         "version": "1.0.2",
         "changelog": "Release 1.0.2",