The traceability matrix reports one number and cannot say what it means. An untagged requirement is either one nobody built or one somebody built and did not label, and both look identical in the summary table. Eight of the second kind were tagged in the previous commit. This is the first kind, written out with the reasoning, so that the distance between the register and the binary is something a reader can see rather than reconstruct from a percentage. Eleven clusters, each verified against the tree rather than inherited from a survey. Several turned out to be more interesting than "not done": Plugins are 21 untagged requirements — nearly a third of the shortfall — and §7 already lists the Plugin API as out of scope for v1 while §3.10 spends 280 lines specifying it. The two that *are* built, FR-PLG-2 and FR-PLG-2d, are the declarative operation format, which is a plugin system that resolves at build time. The fix here is an edit to requirements.md, not code, and D16 has to be answered before any format is called stable. FR-DSP-2 is not merely unbuilt; it is under challenge. frame_budget.rs and TD-4 independently argue that tiling costs more than it saves on the interactive path, so the open question is whether the requirement should survive, not when it will be met — and the spike that would settle it, S6, has not run. NFR-A11Y-1's hard half is done and its easy half is not. LocalizedKey already keeps display strings out of core/ and labels::resolve is a single resolution point; what that point does is a hardcoded English match, so a translation needs a recompile, which is the one thing the requirement forbids. The §4.1 performance targets are unverified rather than unmet. §8 requires a per-commit benchmark suite whose regressions fail the build; there is no benches/ directory, no criterion, and no benchmark step in any of the three CI workflows. The one guard that does live in CI skips itself without a GPU adapter and asserts its CPU half only in release, while CI tests in dev. Nothing says the targets are missed. It says nobody would find out. And three requirements are reported as covered while not being met: R1 and NFR-OPS-1 are tagged only by string literals inside the traceability tool's own tests, which it scans along with everything else, and FR-CAT-13's single tag sits on keyword storage while no XMP is parsed or written anywhere. CONTRIBUTING already warns that a tag proves a tag exists; these are the specific ones. Focus peaking, burst grouping, Flatpak packaging and the Android platform integration are being built in parallel and are marked in progress rather than listed as absent, so those lines can be struck as they land. 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.