dtourolleandClaude Opus 5
846a249156
`jobs` has been a complete durable work queue since the catalog was written, and nothing has ever taken a job out of it. `claim_next`, `complete`, `fail` and `recover_orphaned` had no callers outside their own tests; `enqueue` had three. So the table grew one row per photograph and kept it forever, and FR-PLAT-AND-3's resumability was a property of code that never ran. `runner` is the missing half. It owns no thread, no clock and no policy, and that is the whole design: on Android the process does not decide when background work may run. WorkManager does, subject to Doze, battery saver and FR-NC-6's network constraints, and it revokes permission mid-job by calling onStopped(). So the runner exposes `run_one` — claim, run, record — and `drain`, which repeats it against a budget, a deadline and a cancellation flag the host owns. A `Worker.doWork()` with ten minutes calls drain with a deadline; a desktop idle pass calls it with none. That is the seam the Android service plugs into, and it needs no Android to test. Handlers are supplied from above, because the catalog knows what needs doing and nothing about how: a thumbnail needs a decoder and a fetch needs a network stack, neither of which belongs under core/dr-catalog. A runner claims only kinds some handler declares, so a queue holding work this device cannot do is left alone rather than failed five times. Four outcomes, and only two of them are the job's fault. Done deletes the row; Retry backs off; Abandon gives up now, for a failure no retry can fix; Interrupted releases the claim with its attempt refunded and ends the drain, because the host stopped rather than the job — five backgroundings in a row must not mark good work as failed. Process death is the fifth and cannot report itself, which is what `recover` is for. Recovery is called from `show_catalog_now`, which is the one place a catalog is opened for a session and already returns early if one is open. It has to be exactly once and before any worker starts: there is no owner column, so a second pass while a worker held a claim would take it away. The attempt a dead claim consumed is deliberately kept — a job that takes the process down with it is indistinguishable from one that fails, and the attempt counter is the only evidence that survives a death. The tests cover claiming under contention twice over: sequentially across two connections, and with four threads on four connections against one catalog on disk, asserting every job ran exactly once. Plus completion, backoff, giving up, abandoning, interruption, budget, deadline, cancellation, and a job orphaned by a simulated crash being reclaimed and run once rather than lost or repeated. Not wired to a handler yet, and deliberately not: the only enqueue site the app actually reaches is the remote scan's, whose thumbnails are already served by the async grid worker, and `walk`'s two sites are reachable only from the scan_local example. Inventing a handler to make the plumbing look used is how a requirement comes to read as covered by code that does not implement it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
DarkRoom
A cross-platform, non-destructive RAW photo editor for Linux and Android.
Status: 0.9.0, and no longer a spike. A library opens, culls, develops and exports on both platforms, across eight tagged releases. What is not built is written down rather than merely absent — see docs/outstanding.md for the requirements that have no implementation and why, and docs/technical-debt.md for the compromises that were chosen.
Documentation
| Document | Contents |
|---|---|
| CONTRIBUTING.md | How to land a first change without reading the rest |
| requirements.md | What the software must do — 179 numbered requirements |
| architecture.md | How it is built — crates, GPU pipeline, data model, sync |
| technical-debt.md | Compromises taken deliberately, each with the condition that retires it |
| outstanding.md | What is not built, and whether that is a decision or a gap |
| code-health.md | What a contribution costs, per seam, measured |
| traceability.md | Generated: which requirement is claimed by which file |
| faces.md | Face detection and identity — the models, the licence problem, and what S14 measured |
Building
Desktop:
cargo run -p darkroom-desktop
Android (containerised toolchain, see docker/android):
./docker/android/build.sh cargo ndk -t arm64-v8a build --release
Git LFS is required for the model weights, and the toolchain pins itself. CONTRIBUTING.md has the details and the four commands CI will run against what you send.
Current state
Working. A catalog over a local folder, a Nextcloud account, or a folder a
sync client keeps in virtual-files mode — where a placeholder is treated as the
photograph rather than as a one-byte file. A virtualised library grid with a
capture-time timeline, ratings, labels, keywords, collections and a trash that
survives a crash mid-operation. Card ingest. Face detection and identity, with
the index syncing between devices. A develop pipeline of fifteen declared
operations fused into a single compute dispatch, plus the neighbourhood
operations that cannot be — clarity, texture, capture sharpening, noise
reduction, lens correction, spectral film simulation. Crop, straighten, spot
removal, gradient and subject-segmentation masks, named presets, and a
generated panel that no operation in ui/ is allowed to name. Export to JPEG,
PNG and 8- or 16-bit TIFF with resize and output sharpening.
The zero-copy display path works on desktop. The compute pass writes a texture that Slint composites directly, which is what ARCH §6.1 requires; the readback it forbids costs 96% of frame time at 4K, and
cargo run -p dr-gpu --example bench --features readback
still reproduces that measurement. The one exception is the Android develop view, which reads the frame back through the CPU because zero-copy there needs wgpu's Vulkan swapchain, and that tears a portrait window on a tablet whose panel is mounted landscape. It is debt, not a revision of the rule: the reasoning, the on-device measurements that forced it, and the three separate things any one of which would remove it are in technical-debt.md TD-1.
Not built. Plugins, compare and survey culling, focus peaking, burst grouping, AI denoise, tiled and progressive rendering, and most of the Android platform integration beyond running. The performance targets in §4.1 are unverified rather than unmet — the per-commit benchmark suite §8 requires does not exist, so nothing fails a build on a regression. docs/outstanding.md is the list, with the reasoning.
Licence
GPL-3.0-or-later.