dtourolleandClaude Opus 5
f5edd49b6b
`collection_members.position` and `Sort::CollectionPosition` have been in the catalog since collections were, and nothing above dr-catalog has ever written or read either: `collections::set_order` had no callers, and the grid ordered everything by capture time whatever it was scoped to — dr-ui does not construct a `Query` at all, it has its own `GRID_ORDER` constant. So a manual collection was a set with an order nobody could see or change. Three pieces, because it could not be fewer: `grid_order_for` decides the ordering from the scope, and both readers take it from there. That is the load-bearing part. An ordinal only names a photograph relative to an ordering, so the window read and the span read have to agree — a shift-click resolved through a different ORDER BY than the cells were drawn with selects a different run than the one on screen, and the user finds out when the export runs. `read_ids_span` already stated that invariant about `GRID_ORDER`; this widens it to an ordering that depends on the scope. Only a single manual collection has one. A set draws its descendants' images too, and two children's positions are unrelated integers that interleave arbitrarily; a smart collection has no member rows to carry a position at all. Both fall back to capture time and refuse the drop rather than pretending. The drop is on the cell, on whichever half of it the finger landed — the trailing edge is the only way to name the last place in a collection, since there is no cell beyond the last one to drop in front of. `reordered` is pure and the membership is rewritten whole. `set_order` sets the positions it is given and leaves the rest, so a partial write would interleave the moved run with rows nobody touched; and it is read unfiltered, so what the filter is hiding keeps its place relative to what the user can see. 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.