Commit Graph
69 Commits
Author SHA1 Message Date
dtourolleandClaude Opus 5 151dcc3c02 Make a file out of a photograph
Export existed as a settings page and nothing else: format, quality, colour
space, five sizing modes, a filename template and a metadata switch, all
configurable in detail, and no way to produce a single file. dr-export is the
other half.

**It returns bytes and a name, and writes nothing.** An export has three
destinations with nothing in common — a path on Linux, a SAF document on
Android where there is no path at all (ARCH §6.9), and a PUT to a Nextcloud
folder — so a crate that opened the file itself would serve one of them and be
rewritten for the other two. The caller places the bytes.

Resize, then sharpen, then encode, in that order and for a reason: output
sharpening compensates for the softening the resample introduced, so its
strength scales with how much scaling actually happened, and sharpening before
shrinking would throw the result away. Lanczos-3, separable, with weights
computed once per output row — FR-EXP-4 asks for Lanczos or better because a
box filter turns a distant fence into moiré.

Collision handling takes the "is this name taken" test as a closure rather
than looking at a directory, because there is no directory it could look at
that works everywhere. That shape is not politeness toward Linux: Android's
createDocument renames on collision by itself and cannot overwrite at all, so
all three CollisionPolicy settings need the answer *before* anything is
created. Overwrite, Skip and Increment are each tested, and Increment gives up
after ten thousand rather than spinning against a destination that reports
everything as taken.

Three things are honest rather than done:

  - **Colour space.** sRGB only. The shader encodes and clips to sRGB before
    this crate sees a pixel, so tagging a file Display P3 would claim a gamut
    it does not contain. Refused with a typed error instead of mislabelled;
    honouring it is a pipeline change (FR-EXP-2).
  - **AVIF and JPEG XL.** No encoder. libaom and libjxl are C, ravif is slow
    enough to change what a batch feels like, and the settings page offers
    both because FR-EXP-1 lists them — so asking for one says so rather than
    writing a JPEG under a .avif name.
  - **16-bit TIFF** is a real 16-bit file carrying eight bits of information,
    because AdjustPass renders to Rgba8Unorm. Widened by *257, not <<8, so
    white lands on 65535 rather than a quarter-percent grey. Making it mean
    what it says needs the composer told what format to write.

Metadata is not written at all, which satisfies the half of FR-EXP-8 that
matters most: strip_location defaults to on, and a file with no EXIF block has
no GPS tag. Retaining camera and copyright when asked is not implemented and
cannot be faked by omission.

Also here:

  - `AdjustPass::export_pixels`, ungated where `read_output` is behind a
    feature. The two are the same transfer and opposites in intent: reading
    pixels back to *display* them is what ARCH §6.1 forbids and AC-8 asserts
    against, while reading them back to encode a JPEG is the only way a file
    has ever been made. Separate methods so the instrumentation can count one
    without counting the other.
  - `ExportTarget`, so a destination can be a folder on the server. On Android
    that is the only destination needing no platform work whatsoever — a PUT
    against create_dir, already on the RemoteBackend trait, behaving
    identically on both platforms. Switching target clears the destination,
    since a path is not a remote folder and carrying one across would offer to
    create a folder called `home` at the library root.

Verified end to end rather than by unit test alone: `cargo run -p dr-export
--example export` decodes a frame, runs the develop chain on the GPU at full
resolution, reads it back, and writes all five formats — 27 ms for a
full-size JPEG, 165 ms with a Lanczos reduction to 1200px. ImageMagick agrees
the 16-bit TIFF is 16-bit. dr-export cross-compiles clean for
aarch64-linux-android; all three encoders are pure Rust, which is why they
were chosen. 944 tests pass, clippy and fmt clean.

Not yet wired to a button. The develop view has no export action, so nothing
in the running app can reach any of this yet.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-16 22:26:37 +02:00
dtourolleandClaude Opus 5 d7aeafaf84 Move to wgpu 29, the version Slint can share a device with
Build and test / Desktop (Linux) (push) Failing after 38s
Build and test / Layer separation (push) Successful in 24s
Traceability / Requirement traces (push) Successful in 1m3s
🐳 Android image / Build and push (push) Successful in 3s
Build and test / android-image (push) Successful in 3s
Build and test / Android (aarch64) (push) Failing after 9m54s
Groundwork for spike S1. Importing a texture into a Slint scene requires it
to come from the *same* `wgpu::Device` Slint renders with, and Slint hands
out a device of the version it was compiled against. Slint 1.17 offers
`unstable-wgpu-28` and `unstable-wgpu-29` and nothing older, so wgpu 23 could
never have met it: two semver-incompatible wgpu crates in one tree are two
distinct types, and the device would not typecheck across the gap.

The version is therefore not a free choice, and the manifest now says so —
Slint and wgpu move together or not at all. The Slint requirement is also
corrected from "1.9" to the 1.17 it has actually been resolving to.

Nothing about the render path changes here. The readback bridge is still in
place and still the display path, so this is verified by the tests that
already existed rather than by anything new: 39 dr-gpu tests, which compare
real pixels off a real device, and 888 across the workspace, all passing.
Zero-copy lands separately and small.

What the six releases cost, in full:

  - `ImageCopyTexture`/`ImageCopyBuffer`/`ImageDataLayout` became the
    `TexelCopy*` names (24).
  - `Instance::new` takes the descriptor by value, and `InstanceDescriptor`
    lost its `Default` — it carries a boxed display handle now, so a headless
    context says `new_without_display_handle` and means it.
  - `request_adapter` returns `Result` rather than `Option` (24).
  - `DeviceDescriptor` absorbed the API trace from `request_device`'s second
    argument and gained `experimental_features` (25).
  - `PipelineLayoutDescriptor` takes `Option<&BindGroupLayout>` per slot, and
    `push_constant_ranges` became `immediate_size`.
  - `Maintain` became `PollType`, and `poll` is fallible.

Two of those are improvements worth having rather than churn. The error scope
is a guard whose `pop` runs on drop, so an early return from the pipeline
compiler no longer leaves a scope open on the device for whatever ran next to
fall into. And a fallible `poll` reports a lost device (NFR-R7) at the point
it happens, where before the map callback simply never arrived and the
failure surfaced later as a readback that spun out its poll limit.

Still to do for S1: dr-ui renders through `renderer-femtovg`, which is
OpenGL. Texture import needs Slint itself rendering on wgpu.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-16 21:34:04 +02:00
dtourolleandClaude Opus 5 65e6a96a65 Say what the application is doing, in one bar and one list
Every background job reported into a window property of its own —
library-thumbs-done, library-pin-total, library-syncing — which only the
grid ever read. A pin download that outlived the view it was started from
drew nothing at all once the user opened an image, and there was no answer
anywhere to "what is this busy with", because the answer was spread across
eight properties nothing collected.

They report to one register now (ui/dr-ui/src/activity.rs). It publishes an
aggregate, which draws a three-pixel bar across the top of the shell in
every view, and a row per job, which the settings page lists: scans,
thumbnail batches, pin and open downloads, sidecar uploads, the sync and
the trash. Failures stay on the list until they are cleared; routine
successes do not, or a scroll would bury them.

The handle removes a still-running job when it drops, so a worker that dies
mid-transfer takes its row with it rather than leaving the bar sweeping for
the rest of the session.

Also carries in-flight work from a parallel session — the drawn icon set
and the dr-pipeline ops split. dr-pipeline's build script does not compile
at this commit; ui/dr-ui does, with clippy clean and its tests passing.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-16 18:32:09 +02:00
dtourolle 4d78041d1d Many imorovments
Build and test / Desktop (Linux) (push) Failing after 1m8s
Build and test / Android (aarch64) (push) Failing after 2s
Build and test / Layer separation (push) Canceled after 23s
Traceability / Requirement traces (push) Failing after 59s
2026-08-12 22:16:15 +02:00
dtourolleandClaude Opus 5 fa12afed18 Keep originals on this device, by pin and by use
Build and test / Desktop (Linux) (push) Failing after 1s
Build and test / Android (aarch64) (push) Failing after 0s
Build and test / Layer separation (push) Failing after 1s
Traceability / Requirement traces (push) Failing after 2s
Fills in `image_cache`, which the previous commit's "On this device" filter
read but nothing wrote. Also carries in-flight work that shared these files:
the Android TLS root store, the settings page, and a regenerated
traceability report.

# Two populations, deliberately separate

An original is kept here for one of two reasons, and conflating them produces
the exact failure the feature exists to prevent.

**Pinned** originals were asked for. Pinning a collection before a trip is a
promise, so pinned rows are never evicted and never counted against the
budget — a cap that could silently delete a pinned trip would make pinning
worthless, because it could not be relied on without checking.

**Passively cached** originals are a side effect of working: develop already
downloads the whole file, so keeping it costs no bandwidth and saves the
entire transfer next time. This population is what the budget bounds, evicted
least-recently-used, because it otherwise grows until a day of culling fills
a disk.

Sharing one budget would let a large pin starve the passive cache, or let
browsing evict a pin. They are separate.

# What was built

`dr_catalog::cache` owns the bookkeeping — held tier, size, last use, pinned
— and writes the bytes; deciding to download stays with the caller, which is
what keeps a crate with no network out of the network's business. Files are
written to a temporary and renamed, so a dropped connection cannot leave a
truncated file recorded as a complete original. They are named by image id,
not filename: `Photos/IMG_0001.CR2` and `Trips/IMG_0001.CR2` are different
photographs, and a flat cache keyed on the name would serve one for the other.

`spawn_full_fetch` became read-through. A hit is a disk read; a miss stores
what it downloads and enforces the budget. A cache that cannot be opened is a
miss, not a failure to open the photograph.

Pinning writes intent — `tier_desired` — without downloading, so the button
responds immediately, and `spawn_pin_fetch` fills it in sequentially
afterwards. Sequential because these are tens of megabytes each: the lanes
that make the thumbnail sweep fast buy little against one connection's
bandwidth and cost a great deal of memory. A pin interrupted by a lost
connection resumes from where it stopped.

Schema v5 adds `pinned` and `path`. `pinned` is a column rather than something
inferred from `pinned_by_rule`, which is ON DELETE SET NULL and so cannot
answer for an image whose rule was deleted. A v4 catalog migrates in place;
existing rows default to unpinned, the safe direction.

The budget and "keep opened originals" come from the settings page rather than
a constant, and are applied at startup rather than only on change — a cache
capped at 2 GB last session would otherwise spend this one filling to the
default. Turning off keeping leaves what is already cached readable: those
bytes are paid for, and refusing them would re-download images sitting right
there, including pinned ones.

Also removes a doubled `#[test]` introduced in the previous commit.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-11 21:12:01 +02:00
dtourolleandClaude Opus 5 8b7c1e7f10 Open the sign-in URL through an ACTION_VIEW Intent on Android
The previous commit made the missing launcher honest; this gives Android a real
one, so Login Flow v2 can complete on device.

Builds `new Intent(ACTION_VIEW, Uri.parse(url))` and hands it to
`startActivity` over JNI. The JavaVM and Activity come from ndk_context, which
android-activity's glue populates at startup — the same handle Slint's backend
uses, so there is no second VM to reconcile.

The login worker is a plain std::thread and therefore unknown to the JVM, where
any JNI call would abort the process. jni 0.22 scopes attachment to a closure
rather than returning a guard, so the whole Intent is built and dispatched
inside `attach_current_thread` and the thread detaches on the way out.

Names use `jni_str!` and signatures `jni_sig!`, both compile-time: a typo is a
build error rather than a NoSuchMethodError on the device. A pending Java
exception is checked and cleared before returning, since leaving one pending
makes the next JNI call fail somewhere unrelated; in practice it means
ActivityNotFoundException, i.e. no browser installed.

jni is pinned to 0.22 to match Slint's Android backend.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-09 22:35:38 +02:00
dtourolleandClaude Opus 5 d49b4b41de Add thumbnail size classes and grid zoom; fix the scrub ordinal
The grid now zooms, which needs thumbnails at two resolutions rather than
one, and exposed a scrub that landed in the wrong place.

**Two thumbnail size classes.** `ThumbSize::Grid` (256px, ~10 KB) and
`Large` (1024px, ~45 KB), with the class part of the store key so both
coexist. Storing everything large would take the reference library from
~200 MB to ~860 MB, and shards sync, so that is transfer cost on every
device rather than only disk. A store written before the class existed
migrates in place: its entries are all grid-sized, which is what the
column defaults to, so nothing already fetched is discarded.

`forget` now drops every size for an image. Reading a single row left the
other class's bytes on the shard's tally for good, sealing it early on
space nothing occupied.

**Grid zoom.** Ctrl+wheel and pinch resize cells between 90px and 420px in
geometric steps, so the gesture feels the same at either end where a fixed
pixel step would be imperceptible at 400px and violent at 90px. Crossing
256px switches to the large class, so a zoomed cell is sharp rather than
upscaled. Columns and window capacity already derived from cell size, so
the grid reflows for free.

**The scrub landed about half a library too high.** It counted only dated
images while the grid shows all of them — 10,733 dated against 19,841
rows — and ignored `shadowed_by`. Verified against the live catalog: the
old formula gave 10,887, the new one 10,732, the true grid position
10,732. The scrub's count and the grid's window must use identical
predicates and ordering; a test now fails if they diverge.

**Timeline gestures are continuous.** Scrub and pan were quantised to
whole buckets, so a slow drag did nothing until it crossed a boundary and
then jumped a month. Both work in fractions of the visible span now, and
pinch-to-zoom arrives for tablet, where there is no wheel to reach the
axis with.

The pinch accumulator was wrong on first writing: it took at most one step
per update, so an 8x spread — three doublings — yielded one zoom level.
`log2().trunc()` now extracts every whole doubling and carries the
remainder. The original test asserted the wrong number and defended it in
a comment, which is worth remembering: a test can entrench a bug as
readily as catch one.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-09 21:58:32 +02:00
dtourolle 2a7a319d6c Depend on slint directly in the Android app
android_main takes an AndroidApp and calls slint::android::init, both of
which come from slint itself rather than from dr-ui. The backend feature
still arrives through dr-ui's target-specific dependency. anyhow was unused.

Assisted-by: LLM
2026-08-09 21:12:56 +02:00
dtourolle 5dc1279429 Add the Android app shell; cap cross-build parallelism
Cap both halves of the container build: CARGO_BUILD_JOBS limits how many
rustc processes cargo starts, while --cpus limits what the container gets
regardless of what nested build scripts spawn — cc, cmake, and ring's asm
build all parallelise on their own account and do not consult cargo. Without
both, a full cross-compile takes every thread on the host and makes the
machine unusable for the length of a background build.

Assisted-by: LLM
2026-08-09 21:10:00 +02:00
dtourolle d6ddd0703b Add dr-thumbs: a sharded, syncable thumbnail store
A thumbnail is the one derived artefact worth sending over the wire: it costs
a range fetch plus a decode to produce and is identical for every client
looking at the same file. A second device that downloads a shard gets a full
grid without fetching a byte of RAW.

Sharded at 25 MB, filled sequentially. The cap is about sync granularity, not
SQLite's limits — one growing database means every client re-downloads it
whenever a single thumbnail is added, whereas with sequential fill only the
newest shard is ever dirty and sealed shards are safe to cache forever.

Stored JPEG-encoded rather than as raw RGBA: a 256px RGBA buffer is ~256 KB
against ~20 KB encoded, and that 13x is transfer cost on every client.

Keyed on Nextcloud's oc:fileid, stable across server-side rename and move.

Assisted-by: LLM
2026-08-09 20:38:12 +02:00
dtourolle f630a3ff81 Wire the launch screen into the app
The app now opens on the login screen when there is nothing else to show
— no local paths and no configured library — and goes straight to the
images otherwise. Making someone click past a login they already
completed is pure friction.

  launch.slint       imported by app.slint, replacing the window rather
                     than overlaying it: there is no library to look at
                     until an account is configured
  launch_ui.rs       the Slint wiring, kept out of lib.rs so the launch
                     flow can change without touching the develop window

Login runs on a worker thread and posts results back through a channel,
since Slint's event loop is single-threaded and a 20-minute browser wait
cannot block it. The system browser is opened via xdg-open, never an
embedded webview (FR-NC-1).

Sign-out deletes the local credential even if server-side revocation
fails: a network error must not leave a usable secret on the machine.
Format tick-boxes persist on each toggle, so a selection survives a
crash before the library is opened.

Two things deliberately incomplete rather than faked:

  - "Choose folder" lists the account's folders and reports them, but
    there is no picker widget yet, so selection still happens via the
    connect example.
  - "Open library" logs the request. Opening a remote library needs the
    scan-and-cache path, which belongs with the catalog work in flight.

Earlier I broke the other in-flight dr-ui work by calling
slint_build::compile twice, which replaces the generated module. The
correct wiring is an import inside app.slint, which is what this does.

30 dr-ui tests passing; both launch paths verified by running the app.
2026-08-09 15:34:46 +02:00
dtourolle 09e3043f4c Add secure credential storage, sessions, and a launch screen
Login now persists properly rather than through the JSON file the test
harness was using.

  dr-plat            SecretStore trait plus a Secret Service backend.
                     Verified against the live GNOME Keyring: store,
                     retrieve, delete, confirm-gone all round-trip.
  Session/SessionStore   splits credentials from settings — the app
                     password goes to the keyring (FR-NC-2), while
                     server, login, chosen root and format selection are
                     ordinary config. A test asserts the credential never
                     appears in the config file.
  LaunchModel        the launch-screen state machine, testable without a
                     display server: sign in, approve in browser, choose
                     folder, tick formats, sign out.
  launch.slint       the screen itself, in its own file.

Absence of a secrets daemon is an explicit degraded mode, not a silent
fallback to plaintext — the screen says sign-in will not persist rather
than letting the user find out next launch. Android's Keystore backend
fails loudly for the same reason: a no-op store would look like it
worked and then lose the credential.

Two bugs caught by tests rather than by running it:

  - fail() after busy() signed the user out, because busy() had already
    discarded the session. A failed *scan* would have logged you out.
    Busy now carries the session.
  - normalise_server upgrades http:// to https:// rather than accepting
    it. NFR-SEC-3 requires TLS, and silently sending a credential in the
    clear is not a decision to make on the user's behalf.

launch.slint is not yet wired into app.slint. Calling slint_build::compile
twice replaces the generated module rather than adding to it, which broke
the other in-flight work on dr-ui; I reverted that immediately. Wiring it
needs an import inside app.slint, which is that work's file to change.

419 tests passing across ten crates.
2026-08-09 15:20:39 +02:00
dtourolle c8bb08e661 Add folder scan with format selection; validate A3 on a real library
Library setup as the user described it: pick a folder, choose which RAW
types to look for, scan recursively.

  dr-types::FormatFilter  the tick-box selection, seeing through VFS
                          placeholder suffixes so a dehydrated CR2 still
                          matches as a CR2
  dr-sync::scan           recursive walk, Depth:1 per directory, pruning
                          unchanged subtrees where the backend propagates
                          directory ETags

Verified against nextcloud.tourolle.paris (34.0.2) on a real library:

  browse root      32 entries, 98ms
  scan PhotosRaw   17,185 RAW files in 334 directories, 34.1s
                   (7,836 CR2 + 9,349 DNG)
  range read       262KB of a 21.5MB DNG in 119ms — 1.22% of the file,
                   and enough to read "Canon EOS 6D | ISO 100"

That last line is assumption A3 validated on real data. Cataloguing this
library by whole-file fetch would move roughly 370GB; the range path
moves a few MB.

Pruning is capability-gated rather than assumed: with per-entry ETags a
probe costs a request and proves nothing about children, so it is skipped
entirely. A test asserts zero probes in that case.

Still unresolved: /core/preview returns 400 for every parameter
combination tried, including on a JPEG the server reports as having a
preview. Not a request-shape bug — it fails identically bare. Recorded
rather than worked around; ARCH §6.7 already treats server previews as
opportunistic, so nothing depends on it.
2026-08-09 12:22:31 +02:00
dtourolleandClaude Opus 5 78e3e6b846 Add the develop pipeline: demosaic and seven raw adjustments
Decode through display, on the GPU: black/white normalisation, Bayer
demosaic, camera colour transform, and the first seven adjustment
operations — white balance, exposure, highlights/shadows, blacks/whites,
brilliance, vibrance, saturation.

Composable shaders. Each operation contributes a WGSL fragment rather
than owning a pass, and dr-pipeline fuses the *active* ones into a single
compute shader. One texture read and one write per frame regardless of
how many adjustments are in play, while the operations stay independent
in Rust — adding one is a new file, with no central shader to edit. An
operation at neutral settings contributes no code, no uniform and no
branch. Uniforms are prefixed per operation so two may both declare
`amount`; helpers dedupe by name from a single source of truth.

Pipelines cache on a structure hash covering the op-set and its order but
not the values, so dragging a slider uploads uniforms and reuses the
compiled pipeline. Measured on a 24 MP CR2: 0.60 ms re-render, one
pipeline compiled across ten slider positions.

The UI is generated, not written. EditGraph::capabilities() reports
parameters with their kinds, ranges, defaults and current values; the
panel builds one control per entry chosen by ParamKind. No file in ui/
names an operation, and dr-pipeline has no wgpu dependency, so codegen is
testable without a device (ARCH §6.5a).

Three defects found against real files, each silent:

- rawler 0.7.2's `xyz_to_cam` is all zeros — deprecated and no longer
  populated. The live matrices are in `color_matrix`, keyed by
  illuminant. Reading the old field yields no colour transform at all.
- `cam_to_xyz_normalized()` returns all NaN on any Bayer sensor: it
  divides each of four rows by its own sum, and the unused fourth
  (emerald) row sums to zero. Inverting the 3x3 ourselves avoids it.
  `wb_coeffs[3]` is NaN for the same reason and is normalised at decode.
- As-shot white balance reached the uniform block but no shader read it,
  so the first render of a real CR2 came out violently green. Green
  photosites collect roughly twice the signal of red and blue. Now
  applied unconditionally before any operation, with tests on ordering.

Demosaic is Malvar-He-Cutler rather than bilinear: gradient-corrected
interpolation at one 5x5 neighbourhood per pixel, where bilinear leaves
visible zippering on any high-contrast edge at 1:1. Two of the four
packed CFA constants were wrong on the first attempt, so all four layouts
are asserted to reconstruct the same colour. Crop origins at odd
coordinates re-phase the pattern; without that, red and blue swap.

X-Trans reports GpuError::UnsupportedCfa rather than approximating with
the Bayer path, which would look like a corrupt file.

206 tests, including GPU tests proving every operation and the full
seven-operation chain generate compilable WGSL.

Known gaps: the display path still reads back to the CPU each frame,
which ARCH §6.1 forbids and AC-8 asserts against — it is gated behind the
`readback` feature and waits on spike S1 wiring Slint's texture import.
Curve shapes are a first draft and want tuning against real photographs.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-09 11:37:58 +02:00
dtourolle cc1c5c892d Support requesting VFS hydration; fix Android TLS cross-compilation
Correcting the previous commit: I claimed VFS placeholders could not be
downloaded. That was wrong. The desktop client exposes a socket at
$XDG_RUNTIME_DIR/Nextcloud/socket speaking newline-delimited
COMMAND:argument, and MAKE_AVAILABLE_LOCALLY:<path> does fetch the file.
Verified against client 4.0.7: a 1-byte stub became a real 2.8MB file in
2.8 seconds.

Implemented as dr-sync-nextcloud::desktop_client, deliberately optional.
Android has no desktop client, no XDG_RUNTIME_DIR socket and no
placeholders, so detect() returns None there and callers fall back to the
connector. It earns its place only because it is ~30 lines with no
dependencies: where a library already lives in a VFS folder, asking the
client to fetch beats downloading a second copy over WebDAV and leaving
the client's placeholder state inconsistent.

What this does not change: hydration is whole-file, so it suits the
original tier and never browsing. Filling a grid this way downloads the
entire library. Range extraction remains the only mechanism satisfying
FR-NC-3, and ARCH §9.0 now says so precisely.

Also fixes two real Android build failures found by cross-compiling:

  - reqwest's `rustls` feature defaults to aws-lc-rs, whose aws-lc-sys
    crate is C and fails under the NDK — exactly the pain D1 chose Rust
    to avoid. Switched to rustls-no-provider + ring, installing the
    provider in the constructor so no caller can build a client that
    panics on first use.
  - ring itself needs CC/AR per target; cargo-ndk sets only the linker.
    Added them to the container.

87 tests passing. dr-sync-nextcloud cross-compiles for aarch64-linux-android.
2026-08-09 10:10:29 +02:00
dtourolle f8a718f42e Add Nextcloud connector; reject VFS as a transfer mechanism
Investigated using the Nextcloud desktop client's Virtual Files as a
cache instead of talking to the server directly. Measured on this
machine (client 4.0.7): the configured folder holds 121,785 placeholders
against 10,267 materialised files, including 7,037 CR2 and 9,411 DNG.

Three findings, each independently disqualifying:

  - Linux VFS is *suffix* mode. A dehydrated IMG.CR2 exists only as
    IMG.CR2.nextcloud holding one byte; the real name is absent.
  - Reading a placeholder does not hydrate it. dd of the first 256KB
    returned 1 byte, the stub was unchanged, and the real name never
    appeared. There is no FUSE layer — the stub is an inert marker.
  - Even with hydration the granularity is wrong: VFS has two states,
    1 byte or all bytes, and the preview tier needs a ~256KB prefix of
    a 27MB file. That is ~100x what FR-NC-3 requires.

Recorded as ARCH §9.0. Coexistence is still supported: dr-types now
recognises *.nextcloud stubs, and the viewer lists them as "not
downloaded" rather than as corrupt files or not at all.

So the connector talks to the server directly, as D7 specified.
Implemented: Login Flow v2, PROPFIND with oc:fileid and nc:has-preview,
ETag pruning via a Depth:0 probe, range GET with local slicing when the
server ignores the header, conditional PUT, and /core/preview with
forceIcon=false. delta() returns Unsupported and says why.

Chunked upload v2 is not implemented yet — put() rejects bodies over
5MB explicitly rather than silently truncating.

Two bugs found by testing: my hand-computed epoch in a date test was a
day out (the parser was right), and quick-xml reaches EOF on truncated
input without erroring, so unbalanced elements needed an explicit check
— a half-parsed multistatus must not look like an empty directory.

83 tests passing.
2026-08-09 09:09:27 +02:00
dtourolle 9717e59909 Add RAW decode and a working image viewer
dr-decode exposes four entry points rather than one decode, because
callers differ sharply in what they need (ARCH §3.2): culling wants a
preview, the grid wants metadata, only develop and export touch sensor
data. Fusing them forces a full decode where a header read suffices,
which is why Lightroom stalls ~2s per image while culling.

Smoke-tested against 1,852 real Canon CR2 files (EOS 6D, ~27MB each):

  metadata      0.2ms   from a 256KB header read, no full decode
  preview     ~250ms   5472x3648, downscaled to 2048 for display
  jpeg          3.0ms

Two findings worth recording:

rawler 0.7.2's CR2 decoder implements only full_image; thumbnail_image
and preview_image are unimplemented trait defaults returning None. So
every rung of the preview ladder resolves to a full-resolution decode at
~250ms — 5x over NFR-P13's 50ms budget. CR2 does carry smaller IFDs, so
the fix is our own IFD walk or an upstream contribution. The ladder is
written now so that fixing it is a decoder change, not a change to every
caller. Recorded in milestone-v0.1 risks.

Preview.downscale_to bounds memory: a 5472x3648 RGBA preview is 79.8MB,
which exhausts a phone's budget after a handful of images. Box-filtered
so downscaled thumbnails do not alias.

Also fixed a RefCell double-borrow that panicked on first navigation —
`*x.borrow_mut() = *x.borrow() + 1` holds both borrows at once. Verified
with 10,000 programmatic navigations.

58 tests passing. Traceability 20.3% (29/143).
2026-08-09 08:28:26 +02:00
dtourolle 0f202fd3f9 Add requirements traceability gate and Gitea pipelines
Ports JellyTau's traceability tooling to Rust, carrying across the bug it
was repaired for. That gate divided a traced count by frozen literal
denominators; the requirements file outgrew them and it reported 158%
coverage, so it could never fail its own threshold.

Two rules, both enforced by the extractor's own tests:

  - denominators parsed from docs/requirements.md at run time
  - coverage is |traced ∩ defined| / |defined|, never a raw traced count

The gate additionally fails hard on a misconfigured run — zero
requirements parsed or zero files scanned — rather than reporting a
plausible 0%, and on any orphan tag naming a requirement that does not
exist.

Adapted for DarkRoom: IDs are FR-CAT-1 / NFR-P13 / FR-DEV-3a shapes
rather than JellyTau's fixed three digits, and decisions (D), spikes (S),
milestone items (M) and test ids remain taggable while being excluded
from the denominator — counting them inflated it by 25.

Also adds dr-sync: the RemoteBackend trait and capability model, so the
Nextcloud connector is one implementation rather than the only shape the
engine understands. No mature Nextcloud crate exists (reqwest_dav is too
thin), so the connector will be hand-rolled over reqwest per D7.

Gitea workflows follow the same style: containerised, commented with the
reasoning, desktop and Android on every push, plus a CI check that no
core/ crate depends on the UI toolkit (ARCH §6.5a).

Coverage today: 13.3% (19/143). 50 tests passing.
2026-08-09 08:01:32 +02:00
dtourolle 82a5e21ec6 Initial workspace: GPU context, compute pass, adaptive Slint shell
Establishes the v0.1 foundations on both platforms:

- dr-types: SourceRef (never a filesystem path — Android SAF has none),
  Format, Availability, Validator with ETag quote normalisation
- dr-gpu: wgpu device, compute pass writing a storage texture, resize
- dr-ui: Slint shell with FR-UI-1 adaptive layout, computed in Rust to
  avoid a binding loop
- docker/android: pinned toolchain, verified producing API 28 ARM binaries

Measured the cost of the temporary CPU readback path (dr-gpu bench):
compute is 0.06-0.28ms across sizes while readback is 0.63-7.43ms, so
readback is 90-96% of frame time and scales with area. Recorded in
ARCH §6.1 — this is why spike S1 is the priority.

Mitigations pending S1: reuse the staging buffer, apply at most one
resize per frame, and cap render resolution at 2048 on the long edge.

10 tests passing; core crates cross-compile for aarch64-linux-android.
2026-08-09 07:42:05 +02:00