170 Commits

Include renames

Author	SHA1	Message	Date
dtourolleandClaude Opus 5	242374fd0f	Let the interface hold a backend without knowing whose it is ... `dr-sync` defines `RemoteBackend` and a capability model the engine adapts to, so a second backend can be added without touching the code that uses one. That boundary was documentation. Seven files in `dr-ui` constructed a `NextcloudBackend` directly, ten functions took one by concrete type, and exactly two call sites in the tree — both inside `dr-sync` itself — ever held the trait object. A WebDAV or local-folder backend would have had a well-written trait to implement and nowhere to go afterwards. The change is smaller than the finding suggests, because the trait was already right. Every method the UI has ever called on a backend — `get`, `put`, `list`, `delete`, `create_dir`, `move_to` — was already on it, so nothing had to be added and no behaviour moved. Ten signatures widened to `&dyn RemoteBackend`, sixteen constructions became `remote::connect`, and `remote.rs` is now the only file in the interface that names a connector. `connect` returns `Result<Box<dyn RemoteBackend>, RemoteError>`. The error type is `dr-sync`'s rather than the connector's, which is why every call site kept its shape — the `match`, the `let Ok(..) else`, and `.map_err(ScanFailure::local)?` all still read as they did. One wrinkle worth recording: `&Box<dyn Trait>` does not reach `&dyn Trait` on its own. The compiler reaches for unsizing, which wants `Box<dyn RemoteBackend>: RemoteBackend`, and reports a confusing missing impl rather than suggesting a deref. Twelve call sites therefore say `&*backend`, and two say `let backend: &dyn RemoteBackend = &*backend` where a borrow is shared across lanes. What this does *not* do is abstract credentials. `AppCredentials` is an app password from Login Flow v2 — a Nextcloud protocol, not a general notion of authenticating to a remote — and seven files still name it. An OAuth token, a bucket key pair and an app password have no useful common shape, so deciding what an account is across backends before a second one exists would be a confident guess. code-health.md CH-2 now records that as the remaining half, and it should wait for the backend that forces it. Verified: fmt clean, clippy clean at -D warnings, 2041 tests pass. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-27 19:51:23 +02:00
dtourolleandClaude Opus 5	051447bda6	Keep the proxy a found face will be cropped from ... Every cell on the People screen read "no preview" while the sweep was happily reporting 893 faces found. Both were true. Faces were being detected and stored correctly; there was simply nothing left to draw them from. A face is stored normalised and drawn by cropping the proxy it was found on — `identity::decode_proxy` reads `FACE_TIER` out of the thumbnail store. The fetching sweep fetched a preview, detected on it, wrote the faces and dropped the pixels. So every face it found pointed at a proxy that had never been stored, and the grid had nothing to cut. Worse, that state could not repair itself: the image has its `face_index` row, so it is not outstanding work and no later pass would look at it again. Two fixes, and the first is nearly free. The sweep now keeps the proxy — it has already paid the round trip and the decode, and the crop needs those same pixels the moment the user opens the person. Kept **only where a face was found**: two thirds of a personal library is landscapes and documents (docs/faces.md §7a), those will never be cropped, and skipping them keeps this well clear of the whole-library cost `SWEEP_THUMB_SIZE` deliberately avoids. The downscale to the large class happens after detection, which is the last use of the full buffer. Second, the sweep now picks up images that have faces with no proxy, whatever put them in that state — this bug, or an ordinary cache eviction, which would have produced exactly the same empty grid. Re-running detection repairs it and loses nothing: `record_detections` replaces rather than appends and carries the user's confirmations across the replacement. That makes the screen self-healing rather than dependent on nobody ever evicting a thumbnail. The proxy is stored *before* the detections. A kill between the two then leaves a proxy with no faces — which the next pass simply re-indexes — rather than faces with no proxy, which is the state that cannot recover. Note for the library already part way through a sweep: the 986 images indexed before this will be picked up by the repair route on the next run. 470 tests pass, including one that a face whose proxy is gone becomes work again. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-27 19:35:12 +02:00
dtourolleandClaude Opus 5	c8c6368542	Index the whole library by fetching what it has not seen ... "Index faces in the whole library" could not. Its work list was intersected with the thumbnail store at `ThumbSize::Large`, and nothing fills that class for a whole library — `SWEEP_THUMB_SIZE` is deliberately `Grid`, because the large class is ~860 MB of shards against ~200 MB and every syncing device pays it. So the only images with a large proxy were the ones the user had personally zoomed into or opened in the loupe. On this library that was 220 of 23,529. The comment defending it misread the requirement: // Requesting one here would put face indexing on the network path, // which FR-CULL-8 explicitly keeps it off. FR-CULL-8 keeps indexing off the **full decode**, not the network, and then says the opposite in the same paragraph: "where no proxy exists, the job requests one at background priority rather than decoding inline". faces.md §7 repeats it. Neither was implemented. So the pass fetches. Same two-stage route the thumbnail sweep uses — the header, then the located preview's own byte range (FR-NC-3) — so no whole file is pulled and no RAW is decoded, because an embedded preview is a JPEG. The work list is now every visible image with no `face_index` row for the model: 23,308 here, against nearly none before. **It indexes at the resolution the preview actually has**, not the 1024 the old tier would have given. `locate_preview` already picks the largest embedded preview, and the thumbnail sweep was decoding it and throwing the detail away at `downscale_to(256)`. A face 2% across the frame is 5 px on a grid thumbnail and ~61 px at the cap here — and 112 is what the embedder samples, so this is the difference between an upsampled crop and a real one. `crop_px` records which, per face, as §7 intended. Capped at 3072 rather than truly full: `index_proxy` needs packed `f32` RGB at 12 bytes a pixel, so a 24 MP frame is ~288 MB and the fetch lanes hold one each. The constant is named and sits next to the reason. Orientation is applied **before** detection, not after downscaling. That costs a permutation of a larger buffer — ~15 ms against a ~150 ms decode — and buys the entire class of bug this codebase keeps having: detection then runs on the photograph rather than the sensor, so every box and landmark is already in the space the catalog stores and the overlay draws, with no second mapping to get backwards. One detector and one embedder serve every lane. The lanes are concurrent futures on a single thread, not threads, and inference contains no await, so a `RefCell` borrow never overlaps another — a pair per lane would duplicate ~16 MB of weights for no parallelism. Images with no face in them are recorded too. `face_index` records that detection *ran*, and zero is its most valuable value: without the row every landscape and document scan returns on every pass, for ever, and in a personal library that is most of it (§7a). The old store-only pass survives as `spawn_store_face_sweep` for `examples/face_index.rs`, which indexes a local store with no network. The settings copy no longer claims indexing reads "the photographs already thumbnailed above", and the audit line says "to fetch" rather than "awaiting a proxy", which had become a blocker that no longer blocks. Verified against the real catalog: the new work list returns 23,308 where the old one returned effectively nothing. 469 tests pass. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-27 18:51:53 +02:00
dtourolleandClaude Opus 5	131004393d	Follow the canvas from one display to the next ... The rest of FR-DSP-8. The develop session now carries the space its canvas is encoded into, and `render` composes for it instead of for sRGB — which is the whole of the change to the pixel path, because the output space was always a parameter of composition and always entered the structure hash. A display change is a recomposition. The space is set on the way into every render rather than pushed when the window moves, so a photograph opened while the window already sits on the second monitor is right on its first frame instead of flashing the wrong colour until the next poll. Which display that is comes from sampling the window's position and scale factor twice a second — Slint reports neither a move nor a display change — and re-surveying only when they differ. Settings shows what came back under ABOUT: the display, the space, why, and the other monitors, because the failure FR-DSP-8 names is one that is invisible from the display you are reading the page on. Fractional scaling: the canvas is now rendered at the physical pixel size of the box it occupies rather than the logical one, so the compositor presents it 1:1. At 1.25 it was previously handed 1600 samples to fill 2000 device pixels, and the softness that produces reads like a bad demosaic rather than like a scaling bug. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-27 18:44:51 +02:00
dtourolleandClaude Opus 5	eaafacc3fb	Give the phone the model it had no way to obtain ... Face indexing was compiled into the APK all along — dr-ui takes dr-face with `inference` on every target, so SCRFD, alignment, MBF, calibration and clustering were all in there. What was missing was the weights, and on Android there was no way to supply them. Route C (docs/faces.md §2.2) says the user obtains the model and the app loads it. On a desktop that is a real gesture: drop two files in ~/.local/share/darkroom/models/ and indexing starts working. On Android it is not a gesture at all. `internal_data_path` is app-private, `run-as` needs a debuggable build, and the in-app fetch route C specifies was never built — so the settings page reported "no face model is installed" on every launch with nothing behind the message. Not "off until you supply weights"; off. So the shape-fixed pair goes into LFS under the APK's assets, assemble-apk.sh copies it into the package, and `android_main` unpacks it to the shared models directory before anything asks whether a model is present. Three things that are not incidental: The models directory is now shared across accounts rather than per-account. Weights are identified by `faces.model_id`, not by who is signed in, so two accounts had no reason to hold two copies — and the unpack runs before any session exists to key a per-account path off. `face_models` still prefers a per-account directory when one is populated, so anyone mid-migration keeps the ability to pin one library to its own pair. The unpack writes under a temporary name and renames. `face_models` decides availability on `is_file()` alone, so a copy truncated by the process being killed would leave a file that passes that test and fails inside tract — reported to the user as a broken model rather than a missing one. assemble-apk.sh refuses an LFS pointer. At ~130 bytes it looks exactly like a model to `cp`, and unchecked it reaches the device and fails in the graph loader instead of telling someone to run `git lfs pull` — the same guard dr-segment's build script applies to yolo26n-seg.onnx. The licensing half is unchanged and recorded in §2.2a: the InsightFace grant is research-only, this is a private repository and a self-installed build, and these files come back out before anything is published. The weights are still not a cargo build input — dr-face has no `models/` directory and no `embedded-model` feature, and nothing in the build reads them. The APK assembly step copies two files and is the only thing in the tree that knows they exist. Verified on device: both models unpack on first launch (2524817 and 13616095 bytes) and the APK carries them at assets/models/. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-27 13:18:07 +02:00
dtourolleandClaude Opus 5	b846b312b8	Run the formatter over the face branch before it reaches CI ... The merge of the SCRFD/MobileFaceNet work brought 69 rustfmt diffs across dr-catalog, dr-face and dr-ui with it, so `cargo fmt --all -- --check` fails on master and the Desktop job stops at its Format step — before clippy, the tests or the release build have run at all. That makes the whole desktop half of CI blind: a real compile error behind this would look exactly the same from the outside. There was nothing behind it, as it turns out — with the formatting fixed, clippy, the test suite and the release build all pass. Every .rs hunk is `cargo fmt --all` on the pinned 1.92.0 toolchain, not a hand edit, but it is worth being precise about what that moved, because it is more than whitespace. Besides reflowing signatures and call chains, rustfmt reordered the `pub mod` and `pub use` items in dr-face/src/lib.rs so the `#[cfg(feature = "inference")]` entries sort in place, added the trailing semicolon inside `let ... else { return }` bodies in identity_ui.rs, wrapped a bare closure body in braces in cluster.rs, adjusted trailing commas, and dropped a stray blank line at the end of identity_ui.rs. All of it is semantically inert; none of it changes behaviour. docs/traceability.md rides along because it has to. The matrix records each TRACES tag by line number, and reflowing develop.rs, lib.rs, faces.rs, identity.rs and identity_ui.rs moved them — FR-CAT-8, FR-CAT-9, FR-CULL-10, FR-DEV-3, FR-DEV-3a and FR-DEV-3c all shift by a line or two. The matrix was verified up to date on d777f7f before this commit, so this is drift these formatting changes introduced, not pre-existing staleness being swept up. Leaving it for a follow-up commit would hand traceability-check.yml a failure caused entirely by a whitespace change. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-27 13:12:49 +02:00
dtourolle	d777f7f44d	Merge branch 'master' into worktree-faces-scrfd-mbf ... # Conflicts: # docs/traceability.md # ui/dr-ui/src/develop.rs # ui/dr-ui/src/segmentation.rs	2026-08-27 11:57:38 +02:00
dtourolleandClaude Opus 5	25c88d9dbd	Start face indexing from Settings ... Beside the thumbnail sweep, because it is the same kind of thing: a job that runs for an hour, is asked for once, and reports into the activity list above it. It is also downstream of that sweep -- detection reads the proxies it builds -- so the two belong in that order, and the coverage line says how many images are waiting on a proxy rather than only how many are left to index. The button drives the Identity Manager's own state rather than a second copy, so it cannot disagree with that screen about whether a pass is running, and either place can start or stop it. The pass now opens an activity row. The caption promises progress will appear in the list above, and without a row it would not: the button would be the only sign anything was happening, invisible from every other screen. Coverage is read when the Settings page opens. The figures live in the catalog and this page deliberately holds no session, so they arrive through a closure rather than being kept current -- they are only ever looked at while the page is on screen, and the check is two counts and an indexed scan. Also adds DARKROOM_NO_SYNC. Redirecting XDG_DATA_HOME isolates a test launch's catalog and thumbnails but not its server, and I found that out by pushing a test catalog over the live one. The guard sits in start_derived_sync rather than at its three call sites, because the sweep firing a sync is correct and a flag checked in three places is one that gets missed in a fourth. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-27 09:22:43 +02:00
dtourolleandClaude Opus 5	f00b92a0e6	Turn face boxes back into sensor space before matching regions ... Faces are found on the thumbnail, which is cached the right way up -- the grid would lie on its side otherwise. Segmentation runs on a proxy rendered through a neutral edit graph, which carries no orientation and is therefore in sensor order. For anything shot in portrait the two differ by a quarter turn, so a face and the person containing it were being compared in spaces 90 degrees apart: no match, or worse, a match against somebody else's region. The transform goes on the face rather than on the proxy. Instance masks are defined in the proxy's space and sampled long afterwards, so turning that space would be a far larger change than naming a region warrants. Also two things the first screenshot of the running app showed that no test would have: 110 of 23,528 displayed as "0%", which reads as the feature having done nothing. One decimal below ten percent, and a floor so real progress never shows as none. The rail picked some near-black covers, because the largest face in a group is often the nearest one in a badly lit frame and a black square beside a name identifies nobody. It now cuts the best few and takes the first legible one, falling back to the largest when a person's every photograph is dark -- which happens, and showing it beats showing nothing. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-26 23:28:52 +02:00
dtourolleandClaude Opus 5	b55812812a	Name segmented people from the faces already recognised in them ... The segmenter knows it found a person; the face index knows which person. Joining them turns "person" in the mask list into "Anna", which is the difference between a vocabulary of eighty COCO classes and one that includes the user's family. Selecting a subject in a group photograph stops being a guessing game between three identical rows. Containment, not IoU. A face is a small part of the person it belongs to, so a correct pairing has an IoU near zero and anything IoU-based would reject every true match. Confirmed names only. A suggestion is the system's guess, and printing a guessed name onto a mask region would launder it into a fact. Writing the tests corrected the design once: a tight head-and-shoulders portrait, where the face fills most of the person box, is the case where naming is most certain, not least. An earlier guard rejected exactly that and has been removed, with the reasoning left as a test because it is easy to get backwards a second time. The names hang on the develop session, set when the image opens because that is the one moment the catalog and the image id are both in reach. Every segmentation run afterwards picks them up for free, and a library with no face indexing behaves exactly as it did before. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-26 23:10:46 +02:00
dtourolleandClaude Opus 5	d7a81375ee	List the steps, and let a photographer step straight to one ... Undo answers "take back the last thing", which is the question asked about a mistake just noticed. It is the wrong instrument for one noticed six adjustments later: eight presses, each changing the picture, with no way to see how far back the mistake is without passing through it. A step is a whole state, so arriving from six away costs what arriving from one does — which is what makes a row worth making clickable rather than decorative. `Edit::Discrete` had to go for the list to be worth drawing. Seventeen call sites recorded the same anonymous step, which is fine for deciding whether two changes are one gesture and useless for a panel: seventeen rows reading "Discrete" is not a history. Every variant now carries enough to name itself, and the compiler enumerated the sites that had to start saying so. A step that moved a parameter is still named out of the descriptor, so an operation added as a YAML declaration appears in the history correctly named with nothing written for it (FR-DEV-3c). Choosing a film stock was not undoable at all. The pick went straight to `choose_film`, which nothing on the history's path ever sees. `pick_film` records it, and is separate because the same call is also how a *restored* edit gets its tables back — recording that would push a step for the undo the photographer had just asked for. The list is rebuilt off a revision rather than off every redraw. A drag ends in a redraw per frame while folding into one step, so the unconditional version would tear down and recreate every row sixty times a second to arrive back at the list already on screen. The counter is process-wide: a per-instance one starts every photograph at the same number, so a frontend holding "the revision I last drew" would keep the previous image's steps on screen — invisible while every image opens with one identical row, and a wrong-photograph bug the moment persisted history means it does not. The step names that no descriptor can supply are constants with a roll, and a test walks the roll rather than a second copy of it. `resolve` splits so that "is this catalogued?" can be asked: `derive` turns `history.mask_toggled` into "Mask Toggled", which names a field rather than an act and, being perfectly readable, is a mistake nobody would look at twice. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-26 23:04:35 +02:00
dtourolleandClaude Opus 5	26a1eb7e28	Record that face detection has run, not just what it found ... An image with no faces in it was indistinguishable from one that had never been looked at, so every landscape, still life and document scan in the library was re-detected on every pass, for ever. In a real library that is most of it: on the 23,527-image test library, 64 of the first 110 images indexed contain no face at all. Schema v9 adds face_index, a run marker per (image, model) carrying the face count and the proxy edge it read. Keyed on the model, so a model change puts every image back in the queue by itself. That makes a coverage figure possible, which is the thing a user actually wants to see. The audit also splits the outstanding set by whether a proxy exists, because 23,417 awaiting a proxy and 110 ready to index are different problems, and telling the user to run indexing again would not fix the first. The Identity screen gains Index faces, Stop, and the coverage line. examples/face_index.rs is the same check and sweep without a window, which is the right shape for an overnight pass. Measured on the real library in release: 3.5 images/second, 110 images and 125 faces in 30 seconds, and a second run correctly finds nothing left to do. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-26 22:13:41 +02:00
dtourolle	bc07c32611	Merge branch 'master' into worktree-spot-removal ... # Conflicts: # docs/traceability.md	2026-08-26 21:51:47 +02:00
dtourolleandClaude Opus 5	626780276d	Draw with OpenGL on Android, where the driver owns the display rotation ... The grid tore while scrolling on the tablet, in portrait only, and was flawless in landscape. It was not vsync and it was not the grid. Measured on the device, same build, only the tablet rotated: landscape bufferTransform=ROT_180 composition=DEVICE (2) clean portrait bufferTransform=ROT_270 composition=CLIENT (1) torn The panel is mounted landscape — 1920x3000 at installOrientation 3 — so a portrait window needs a 90 degree rotation before scanout. wgpu-hal hardcodes the swapchain's `preTransform` to `IDENTITY` and says so in a comment beside the line: // On Android 10+, libvulkan's `vkQueuePresentKHR` returns // `VK_SUBOPTIMAL_KHR` if not doing pre-rotation ... This is always the // case when the device orientation is anything other than the identity // one, as we unconditionally use `VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR`. That is gfx-rs/wgpu#3345, and it cannot be fixed by setting the field: `preTransform` is a *promise* that the content is already rotated, so keeping it needs the renderer to rotate what it draws, which wgpu cannot do on Skia's behalf. We do not have to be on that swapchain. `AndroidWindowAdapter` chooses `SkiaRenderer::default_wgpu_29` only because this crate enables `unstable-wgpu-29`; without it `SkiaRenderer::default` resolves — through i-slint-renderer-skia's build script, which selects OpenGL on anything that is not Apple, Windows or wasm — to Skia over OpenGL, where the driver owns the rotation and there is no transform to get wrong. So both renderer features move to the desktop-only dependency, and desktop is untouched. # The cost, stated rather than hidden Skia over OpenGL cannot sample a `wgpu::Texture`, so the develop view's frame comes back through memory: `AdjustPass::export_pixels`, already ungated and already used by the export path, into a `SharedPixelBuffer`. That is the round-trip ARCH §6.1 and AC-8 exist to forbid, and it is the right trade only because of what the alternative actually is — not a faster develop view, but a grid that tears in the orientation a tablet is mostly held in. Two things keep it small. The device is still opened on Android, so demosaic and the adjust pass are untouched on the GPU; only the last hop changes. And `render` fits the pass to the canvas before it runs, so the readback is at viewport resolution, a fraction of the ~7 ms at 4K the original measurement was taken against. Four other explanations died on the way here, each by measurement rather than argument: the present mode (a patch confirmed in the installed binary reached `AutoVsync`, and the rows still duplicated), our shared wgpu device (Slint opened its own, unchanged), Skia's partial rendering (off for GPU surfaces), and client composition itself (unavoidable in portrait on this panel, so it cannot be what distinguishes a torn frame from a clean one). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-26 21:47:02 +02:00
dtourolleandClaude Opus 5	10b10569e2	Add the Identity screen ... A third top-level screen beside the library and develop, because naming a cluster and pulling a stranger out of it are tasks with their own rhythm and need the whole window. The screen is designed around the clustering being wrong, which is FR-CULL-10 rather than pessimism: grouping over-merges on siblings, on parents and children, and on the same person a decade apart. So Split off sits next to Confirm all rather than behind a menu, the confirm/reject pair is on the face itself, and a group the system found is drawn differently from a person the user has vouched for. Splitting rejects before it confirms. Without that the next clustering pass suggests the face straight back and the user's correction becomes an argument they keep having. Face crops come from the proxies the grid already built, one decode per image rather than per face -- a group photograph holding six faces of one family is one JPEG. Where the calibration is not fitted the screen says confidence is unavailable instead of printing a percentage that looks measured, which is FR-CULL-9's rule at the point it becomes visible. The verdict controls use drawn icons, not tick and cross characters: ui/icons.slint exists because those render as tofu on Android. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-26 21:05:41 +02:00
dtourolleandClaude Opus 5	8ab9440190	Put the repair tool on the photograph ... A third chip beside Crop and Local, and the mode strip's own comment predicted the shape: a mode that arms a gesture on the canvas and scopes the column. Click a mark to cover it, drag the disc to move the repair, drag the source circle to say where the patch comes from, Delete to remove it. The source starts two and a half radii towards the middle of the frame, which is FR-DEV-8's automatic placement in its cheap form — dust sits on skies and skies are smooth, so it is usually right and always one drag from fixed. Two things are drawn deliberately. The circles are the size the repairs actually are, because whether a disc covers a speck is the whole judgement being made and a fixed-size dot would say nothing about it; the reach around them is padded to a touch target so a spot on a dust mark can still be picked up on a phone. And only the selected repair shows its source: a dusty sky carries a dozen, and two dozen circles with nothing saying which belongs to which is less information rather than more. The panel edits what is stored while the canvas draws what is mapped, and the two are pushed separately for that reason — a slider deriving its value from the drawn radius would move differently at different zoom levels. It is also the one panel built from SliderRow rather than a live track: a repair has no OpId to coalesce a drag under, so a row that fires once per gesture is what keeps undo one step per decision. Verified as far as this environment allows: the strip renders and the column re-scopes, photographed under XWayland. Synthetic clicks do not reach this application, so the gestures are as-written rather than as-felt, and docs/spot-removal.md says so. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-26 20:58:13 +02:00
dtourolleandClaude Opus 5	2ac069a6b3	Index the library's faces, and group them into people ... Wires dr-face to dr-catalog: a background sweep that reads the proxy the grid already built, detects, aligns, embeds and stores, then a clustering pass that turns those embeddings into suggested people. Detection runs on the Large thumbnail tier and nowhere else. That is what makes the feature affordable -- a browsed library has already paid for its proxies, so face indexing adds no RAW decode that was not already happening -- and it is why an image whose proxy is missing is skipped rather than fetched: requesting one here would put face indexing on the network path FR-CULL-8 keeps it off. The sweep keeps no cursor. It asks the catalog what is missing, so it resumes after process death with no repeated work beyond the in-flight image, and cancelling is dropping the receiver. recluster writes only the suggested half. Confirmed faces go in as anchors and come back untouched, and a cluster of one stays nameless -- naming every stray face would fill the People view with noise the user then has to dismiss. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-26 20:49:30 +02:00
dtourolleandClaude Opus 5	3b5952769b	Emit floats an f32 can hold, and drop the format! that formats nothing ... CI runs cargo fmt --check and clippy -D warnings, and this branch had never been through either. Both would have failed it. The bulk was the generated colour tables: eight significant figures where an f32 carries about 7.2, so the eighth is noise that rounds away at compile time and clippy's excessive_precision says so 109 times over. Fixed in the generator rather than only in the file, so it stays fixed -- and the file is trimmed in place rather than re-derived, because regenerating it needs a colour-science stack that has nothing to do with the defect. The format! in the composer is mine too, from extracting the rendering tail: the braces in it were escaped because the text used to live inside a larger template, and once extracted the escapes are noise and the call formats nothing. Also here, and clearly not mine: an unused import and a shadowed binding in dr-gpu, and an unused import in a test. They are pre-existing -- clippy has been failing on master before this branch existed, on lints like is_multiple_of that arrived with a toolchain rather than with anyone's code. Fixed because CI cannot go green around them, and called out because a merge commit is a bad place to quietly edit someone else's crate. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-25 22:28:14 +02:00
dtourolleandClaude Opus 5	6d18517d28	Ship every stock that exists, black and white included ... Three profiles was what the first cut needed to prove the model. This is the rest of the open data: 23 camera stocks and 9 papers, which is all of spektrafilm. Black and white was the gap, and it turned out not to be a gap in the data -- it was a gap in where I looked. Upstream's `main` has 28 colour profiles and nothing monochrome; `dev` has three more, and they are Tri-X, Double-X and the 2302 print film they go onto. So the answer to "do we have B&W" was yes all along, and it needed the dev branch rather than a fortnight digitising Ilford's datasheet graphs by eye. Those three are pinned to `dev` per stock; the colour stocks stay on the released branch. A monochrome profile is single-channel -- one emulsion, not three -- and spreading that one layer across all three is exact rather than an approximation: three layers with identical sensitivity and identical curves respond identically, which is what one layer does. The dye is the trap. The renderer *sums* the three layers' contributions, so replicating it unchanged renders every frame three times too dense -- neutrally, and therefore plausibly. A third each reconstructs the single emulsion, and two tests hold both halves: that the densities stay equal, and that they sum to one emulsion and not three. Double-X and 2302 ship five curves apiece, measured at five development times -- 4 to 12 minutes for Double-X. That is push and pull processing as measured data. The standard 6.5 minutes is what ships; the rest is in the upstream file waiting for a control to ask for it. Two stocks are `support: film` and are nevertheless what a negative is printed *onto*: the cine projection films 2383 and 2393, which the Vision3 stocks print to. Filtering the picker on support alone offered a projection stock as something to load in a camera, so it filters on stage, with a test saying so. The picker had to change shape twice over. Chips were right for three stocks and off the edge of a 280px column at twenty-four, and the column that replaced them was a thousand pixels standing between the photographer and every slider below. It is a disclosure now: one row carrying the answer, opened to change it, closed again on choosing. That is the opposite of the argument this panel used to take the lids off its sliders, and deliberately so -- an instrument you compare wants to be visible, and a list you consult once wants to be out of the way. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-25 20:30:11 +02:00
dtourolleandClaude Opus 5	baa8957e80	Let a photographer choose the film, and remember which one ... The stock model rendered correctly and nothing could ask for it. This is the picker, and the sidecar key that makes the choice outlive the session. How the choice persists was the open question, and the answer was already written down twice in sidecar.rs: `rating` is a top-level key "because a rating is not an edit", and `masks` are one "because a layer is not a scalar". A stock is that kind of thing -- a choice of material, not a number a slider moves -- so it is a top-level key too. It stores the **id**, not an index. Stocks are files that users add, so an index would mean installing a profile silently changed which film every existing photograph had been developed on. A name this build has no profile for still round-trips untouched, because the alternative is that syncing to an older phone quietly un-develops the picture. Only the names travel. Turning one back into tables needs the profile database, which dr-pipeline deliberately does not link, so `Version::apply` clears the film and the session re-bakes -- after the parameters, because the bake reads the film's own exposure sliders and the print balance is solved against them. That is also why moving those sliders rebuilds the lookup where no other control in the panel does: an enlarger's filtration depends on how the negative was exposed. The panel keeps its rule. It still names no operation and still generates every control from a declared parameter kind; the stock gets a bespoke control beside those, exactly as the mask stack does, and for the same reason. The film's exposure and print exposure arrive as ordinary generated sliders. Two defaults worth stating. Picking a colour negative prints it, because an unprinted one is an orange strip and offering that as the first thing somebody sees after choosing Portra reads as a bug rather than as a choice -- the toggle is there for anyone who wants the scan. And a paste carries no film: a preset is a parameter map, and a stock is not a parameter, so pasting one would paste a choice the clipboard never took. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-25 19:57:41 +02:00
dtourolleandClaude Opus 5	54f9cb54fb	Take the whole run a shift-click names, not the part that happens to be loaded ... Shift-clicking two photographs selected only the cells between them that were in the loaded window. The grid is a window of a hundred or so over a library of twenty thousand, and `apply_press` resolved the range against that window — `ids[lo_row..=hi_row]`, clamped to what was there. Everything else in the run had no id anywhere in the UI, so it was silently dropped. The user cannot see that: the selection count is off screen along with the photographs, and the gesture only announces itself when the drop files a dozen images instead of two hundred. The two ends are *ordinals*, and only the catalog knows what lies between them. `read_ids_span` asks it, through the same predicates, the same rating filter and the same ordering the window itself is read with — an ordinal names a photograph only relative to an ordering, so a run taken through any other one is a run through a different library. That ordering is now a constant, `GRID_ORDER`, shared by the window, the trash's own order beside it, and the run: capture time first, with the file name breaking ties and nothing more. A card written by two cameras interleaves names that have nothing to do with each other, and what "everything between these two" means to a photographer is a stretch of an afternoon. The query is reached through a closure handed to `CollectionsController` at wiring time rather than a catalog handle, because the scope and the filter that bound the run belong to the grid's controller. `apply_press` stays a pure function of what it is given, which is what keeps the selection rules testable with no library open — and the tests pass a run that reads a plain slice. Where there is nothing to ask, the loaded window is still used: a poorer answer than the catalog's and a far better one than a gesture that appears to do nothing. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-24 19:50:21 +02:00
dtourolleandClaude Opus 5	fa4ad6e2d6	Drag the date range on the axis it is chosen from ... The range could be turned on with a finger and not aimed with one. Its two ends were typed as `YYYY-MM-DD` into 108px fields behind a soft keyboard, to name days already drawn on the axis a thumb away; and the chip that seeds them takes its span from the timeline's zoom and pan, which are a wheel and a middle button. A touch screen has neither, so on Android the filter was a switch with no aim. The band is now on the timeline. Two ends with grips, dragged along the bars, released to filter — the histogram was already how a period is found, and this makes it how a period is stated. Both ends snap to whole days, which is what the typed fields mean, what `show_range` reads back out, and a floor under a range dragged shut. The fields stay for what dragging cannot do: name an exact day, and say in words what the range is. For that to work the axis had to stop following the range. Redrawn to the band, it moved the ground under the very handles doing the narrowing, and there was nothing outside the range left to widen back into. While there: a fixed number of equal bins instead of calendar buckets. Between one calendar unit and the next the bar count is free to wander by a factor of twelve, so zooming in halved it two steps out of three — the same picture drawn wider until it jumped back to fine. Equal bins also include the empty ones, so a bar's position on the track and the date under it are finally the same quantity; before, a library with gaps drew a February six months wide and the marker, the band and a click all pointed somewhere else. The count is a setting, 32 or 64, because the right answer is a question about the screen. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-23 18:42:42 +02:00
dtourolleandClaude Opus 5	a8969c149e	Move the instrumentation off the header and into About ... The render backend, the layout class and the frame rate sat permanently in a 44px strip that also carries the only way out of develop, the undo pair, the panel toggle and the export button. They cost about 200 logical pixels, and a `HorizontalLayout` given less width than its children's minimums does not shrink them — it runs off the end. There was already a breakpoint hiding them below 820px, which is why a tablet in portrait (768) looked fine and landscape (1200) did not: above the breakpoint the readouts came back and pushed the header off the right-hand edge. A breakpoint that hides a problem at one size and not another is a workaround, and this removes the reason for it rather than moving it. They are diagnostics — read once when something looks wrong, and then not again — so they are in Settings under ABOUT, beside the version, which is where someone goes when they have a bug to report rather than a photograph to edit. The version is there for the same reason and comes from `CARGO_PKG_VERSION`, so the line cannot disagree with the binary showing it. The frame rate keeps its warning hue. It is the number that says whether the zero-copy display path is holding up, which is the assumption the whole display design rests on, and that is worth colour wherever it is shown. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-23 11:41:17 +02:00
dtourolleandClaude Opus 5	e25f0ad2c6	Let the launcher find an icon for the window ... The icon was already embedded and had been all along: `app.slint` sets it and `build.rs` compiles it into the binary with `EmbedFiles`. That is not what a Wayland compositor looks at. It ignores a client-set icon entirely, matches the surface's `app_id` against installed `.desktop` files, and takes the icon from the one whose basename agrees. Nothing set an app id and no desktop entry existed, so GNOME had nothing to resolve and drew the placeholder. Both halves are needed and neither substitutes for the other: the embedded icon is what X11 and the window itself use, and the desktop entry is what the overview, the dash and alt-tab use. The app id, the `.desktop` basename and the installed icon's filename are one string in three places — `paris.tourolle.darkroom`, the same reverse-DNS name the Android manifest already uses, because it is one application. Change one without the others and the icon disappears again with nothing logged, so each file says so where the string appears. The PKGBUILD builds from the checkout rather than a release tarball, so `makepkg -si` installs what is being worked on. Install verified by inspection of the built package: binary, desktop entry, and the icon under hicolor/256x256 by the name the entry asks for. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-23 10:26:04 +02:00
dtourolleandClaude Opus 5	d04087af83	Import into the library, which is on the server ... There was a local destination, defaulting to ~/Pictures, and an "upload" switch that could be turned off. That was wrong twice over. DarkRoom's library *is* a folder on a Nextcloud server (FR-NC-6) — there is no local library — so a user-chosen local destination built a second pile of photographs that no view in the application ever lists, and made "where did my import go" a question with two answers. An import now has exactly one destination and the page asks nothing about it. With no account there is nowhere to go at all, so Import is refused rather than quietly filling a folder. What lands on the device is a staging copy in a directory the app owns, the same shape `export` uses for its outbox and for the reason its module docs give: staging first is the only path, not a fallback for being offline. The bytes have to reach disk before the network — streaming a card straight to the server would let a move-import erase a card against an in-flight upload, and would make importing impossible with no connection (FR-NC-10). A staged file is removed once the server confirms it; one that is not confirmed stays queued, and the next import drains it. And the rule that was stated but never enforced: `retirable` was reported and `dr_ingest::retire` was never called by anything, so a move-import silently behaved as a copy. The card is now emptied by the worker, of exactly those photographs the *server* has confirmed — not those merely written here, because the staging copy is removed moments later and anything unconfirmed would then exist nowhere at all. FR-NC-7b said "copied locally first ... then queued for upload", which is a staging area; it has been rewritten to say so in terms that do not also permit what was built. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-22 21:09:26 +02:00
dtourolle	56dd3187f1	Merge integration into wip/ingest ... Second pass, against the detail-stage and thumbnail work that has landed since the first. Resolved and verified here rather than in the shared merge worktree, so what goes back is a fast-forward. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> # Conflicts: # docs/traceability.md	2026-08-22 19:44:42 +02:00
dtourolleandClaude Opus 5	28325af448	Make the thumbnails while the originals are still in hand ... An import read every byte of every original, uploaded them, and then left the grid to fetch a preview range back out of each one over the network — for files that had been on this machine minutes earlier. The pixels are now made from the bytes already in memory, on the fast path FR-CAT-3 names: locate the camera's own embedded JPEG, decode a few hundred KB, downscale, orient. Never a demosaic. A file with no usable preview yields none, which is not an error and simply leaves the grid to fetch one later. The filing waits for the upload, and only the filing. The shard store is keyed by `oc:fileid` (FR-NC-5) and that does not exist until the server has the file — so the thumbnail is made from the local copy and held until an id can be attached to it. One listing per folder supplies every id at once, rather than a PROPFIND per photograph over a link that may be mobile data. Best-effort throughout: a thumbnail that cannot be filed costs the grid one preview fetch later, and failing an import over it would be the wrong trade. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-22 19:20:13 +02:00
dtourolle	0d9910efc6	Merge branch 'worktree-agent-a89309a856c8f4947' into integration	2026-08-22 19:00:56 +02:00
dtourolleandClaude Opus 5	13d003b89d	Let the curve widget plot whichever curve is asked for ... An operation with four curves and a panel that draws one plot needs a way to say which. The panel finds out the way it finds out everything else: the points are faceted with the subject they act on, consecutive parameters sharing a subject are one curve, and a widget spanning several of them gets a selector over their names. Nothing in ui/ contains the word "red", and an operation that grows a fifth curve arrives with a fifth chip. The names ride on the panel rather than on the curve's row, because a Slint model is compared by identity: a fresh list built on every parameter event would make the row look changed every time, and rewriting a row rebuilds the element holding the drag in progress. That is the hazard the in-place point update already exists to avoid. Which curve is on show is interface state, not an edit. It changes no pixel, so it takes no history step, reaches no sidecar, and redraws nothing — the photograph on screen is already right. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-22 16:06:21 +02:00
dtourolle	1526c957cf	wip: ingest	2026-08-22 15:34:43 +02:00
dtourolle	735683b849	wip: ingest	2026-08-22 14:12:40 +02:00
dtourolle	5bcd0e0269	Merge branch 'worktree-agent-a22a049c461818dbe' into integration ... # Conflicts: # core/dr-pipeline/tests/mask_sidecar.rs	2026-08-22 13:23:34 +02:00
dtourolleandClaude Opus 5	96a7b405c2	Say which photograph the sliders are pointed at ... Selecting a mask layer silently re-points about thirty controls at that layer's chain. Same panel, same order, same sliders, different meaning — and the only thing that said so was a sentence in the panel above, which a photographer reaching for the exposure slider has no reason to read. An exposure change lands on the whole frame when it was meant for a face, or the reverse; both are silent, and both are discovered later. `ui-navigation.md` §1.1 calls it the dangerous one and it is: the others in that document cost time, this one costs work. The remedy is the classic one for a modal fault — make the mode visible — and the application already had the pattern. Crop arms a canvas interaction, draws an overlay, gives the column one job and is left by the control that entered it. Local masking is the same animal built as a peer panel, and that is what created the ambiguity. So `crop-mode` stops being a bare boolean and becomes one value of a three-state mode, which is the point: two modes could both be on before, and now that is not a state the interface can be in rather than one it is tested against. **One strip, not two.** The mode control was going to sit beside the group strip that filters the adjustments, which is two controls above one column answering the same question — what am I working on. They are one control now, `Crop · Local │ All · Light · Colour`, which is the shape Lightroom Mobile's bottom strip has for the same reason. The two halves are different kinds of state and are drawn differently: a mode is a chip that fills with the accent when it is on, a group is a word with a rule under it. That difference is what lets both be read at once, which they routinely are — picking Light while a mask is selected filters *that layer's* chain and does not leave the mode. Dropping the scope on a group press would be the same fault coming back from the other end, and would make Light mean two things depending on where it was pressed. The strip stays pinned above the develop column rather than moving to the top of the canvas as the document proposed. The half that filters the column belongs to the column, and the photograph is the subject. The canvas keeps one button, which now names the mode it leaves rather than saying "Done" — that was unambiguous with one mode and would not be with two — because the column can be closed on a narrow window and no mode may be inescapable. Entering a mode is a side effect, so Rust owns it rather than the strip writing the property: crop drops the zoom, local turns the overlay on, and leaving clears the selection. That last one is the fix. The "Overlay" and "Select" toggles are gone because they armed things that are simply what the mode *is* — a mode that has to be switched on separately is one you can enter and have do nothing. Escape and the Android back gesture join `back_step` as one `LeaveMode` rather than a second exit concept, and the mode is left before the zoom is: it was entered later, and it is the bigger step back. The heading is where the scope goes. Not a caption beside the panel, the heading *of* the panel that changed — `ADJUST` becomes the layer's name, the same string the selected row in the stack shows. That is the difference between describing a hazard and removing it. **Handles on the photograph.** A linear or radial mask could be created and then not moved, so a radial sat at the centre of the frame at its default size for ever. Three faults stood in the way of drawing one. The first is that a gradient did not render at all until the model had run. The rasteriser was built on the way out of `segment` and the array's size was read *off* the segmentation, so a gradient added to an unsegmented photograph produced nothing — silently, in the same way exports and thumbnails once did: the shader still emits the layer's block and the empty placeholder multiplies it by zero. The proxy size is a property of the photograph. Both are derived from it now, and deliberately at the same size rather than by coincidence, because a subject's distance field is sampled against that array. The second is hit-testing. A handle is drawn in output coordinates and stored in source ones, and between them lie the crop, the zoom, the pan, the straightening and the turns. `Framing::source_at` is `wgsl_prologue` evaluated on the CPU, kept in that file beside it so that keeping the two in step is one file's problem — a handle mapped through anything less drifts off the mask the moment the view moves, which is exactly what masks are rasterised in source space to avoid. The third is that a drag is a displacement, not a destination. Each handle answers to the movement of the pointer since the press, applied to where the mask was when the press landed. Snapping the handle to the pointer instead jerks it by up to half a touch target on the first press, and the target is finger-sized because a tablet has no hover to reveal a control and no modifier to qualify it. A ramp gets three handles — centre, width, angle. An ellipse gets three too: centre and one per semi-axis, the major one carrying the direction as well as the length, because where an axis is put says both. It had a fourth, and it is gone: standing off the shape by a fixed distance, the rotation arm began outside the photograph at the size a new radial is created at, so the first thing anyone saw was a control they could not reach without first shrinking the mask. Two faults here were found by looking at the screen rather than at the source, both of the kind that cannot be found any other way. A `1px` rule with a size and no position is *centred* by Slint, so the seam between the photograph and the column was a hairline down the middle of the panel, through the histogram and every slider under it — twice, once in `app.slint` and once in `AdjustPanel`. And handing Slint a fresh model for the handles on every pointer event made the repeater rebuild its items, taking the `TouchArea` holding the gesture with them: the handle jumped once and then went dead under a finger that was still down. `develop.rs` carries the same warning about the parameter rows, where it broke slider drags; the model is rewritten in place now. The tests worth having are the ones about ambiguity and about the map. That the same row reads the frame's value, then the layer's, then the frame's again is §1.1 in one assertion. That dragging a handle onto another gradient's matching handle *produces* that gradient closes the loop between the two directions of the framing map, through a view that is cropped, zoomed, panned, straightened and quarter-turned at once — a one-legged map is invisible when the framing is neutral, because then both legs are the identity. Not done here: the histogram still reports the whole frame while the sliders edit a layer. That disagreement is real and is N3's, which this unblocks. The strip has room for a Brush entry beside Crop and Local when the painted masks land in the core, and it needs nothing here but the canvas interaction. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-22 13:20:41 +02:00
dtourolleandClaude Opus 5	c0e1179936	Find the subjects without stopping the window ... "Find subjects" took the UI thread for two thirds of a second on a 22 MP frame — a proxy render, a readback and a YOLO pass through `ort` — and for that time the interface was simply gone. The panel apologised for it rather than hiding it: a "Looking…" label, and a 16 ms `single_shot` so the label reached the screen before the freeze began, with a comment saying the obvious fix needed the develop session restructured and was not being taken. The obstacle was never `Send`. `DevelopSession` is `Send` — the device, the source texture and the passes all are. What cannot go to a worker is the `Rc<RefCell<Option<DevelopSession>>>` that every callback in the window reaches through, and the window has to keep reaching through it while the work runs. Handing the session over would freeze the interface exactly as thoroughly as blocking on it did. So the work takes a copy of what it needs instead. A `SegmentationJob` is the device, the demosaiced source behind an `Arc`, and the name of the session that asked. Taking one is two `Arc` bumps; running one is 495 ms on this desktop; none of it touches the session, and there is deliberately no `&mut DevelopSession` in scope for a caller to hold across it. The proxy render travels with it rather than staying behind — a `GpuContext` and a texture handle are both `Send`, and the model was never the only expensive half. So does building the mask rasteriser, which is a shader compile: adopting the result was costing 23 ms, a dropped frame on the one redraw the user is waiting for, and the rasteriser is needed exactly when the subjects arrive and never before. What is left on the UI thread is a microsecond. The answer comes back through a channel a `slint::Timer` polls, which is the shape `apply_when_ready` already uses for a sidecar fetch. **A result can outlive the photograph it describes.** Two thirds of a second is long enough to press the button, think better of it and swipe to the next frame — and the result landing then would fill the panel with subjects that are not in the picture, drawing outlines around a dog two photographs back. Nothing downstream can tell: the masks rasterise and the overlay draws either way. So every session is minted with an id, a job carries the id it was taken from, and `delivery` compares the two before anything is applied. An id rather than a counter beside the session slot, because that slot is written from four places in `lib.rs` and the fifth would be the one that forgot. A discard touches nothing on the way out. `segmenting` belongs to whichever photograph is open now, which may well have a run of its own going, and clearing it would re-enable a button that is correctly insensitive. One run at a time, and abandonment is what stops that being a trap. A job left over from a photograph the user has left is displaced rather than waited for — otherwise the next frame's "Find subjects" would do nothing for the length of a run nobody wants, which is the wait this exists to remove. `ort` offers no way into the inference, so abandoning is checked at the seams there are: before the job starts, and between the readback and the model. Abandoned early it costs nothing, abandoned mid-inference it costs the run it was already committed to, and either way the answer is dropped at the channel. `DevelopSession::segment` survives as a test-only convenience. Left public it is precisely the shape that put two thirds of a second on the UI thread in the first place, and the next caller would reach for it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-08-22 12:26:11 +02:00
dtourolle	924a837389	Group the panel by what operations say they are about ... A strip of groups over the adjust panel — Light, Colour, Detail — derived from the attributes the operations declare. `adjust.slint` names none of them: the strings arrive resolved and the panel only draws them, so a new operation joins the right group by saying what it is and this file does not change (FR-DEV-3a). A group nothing carries is not offered, so a tab never opens onto nothing. Geometry is left out because its one operation prefers an on-canvas widget and is skipped by the row builder — a Geometry tab would be empty while `GeometryPanel` holds the real controls. The strip appears only when there is more than one group to choose between; a single tab is a control with one option. The selected group is underlined rather than filled. The accent means *modified* everywhere else in this interface, and spending it on "which tab" would blunt the one signal the panel has. **The trap, and it nearly bit again.** `op_index` on a row counts over every capability, not over the ones a filter kept — it is how a row routes back to the core. Renumbering it while filtering would make a slider drive a different operation, which looks like a rendering fault rather than a routing one. `rows_filtered` keeps `enumerate` over the full list and only `group_head` is a position within the emitted rows; a test moves a value through a filtered row and checks it lands where it was asked to. Six tests, including that a nonsense index falls back to showing everything rather than to showing nothing.	2026-08-22 10:22:47 +02:00
dtourolle	e7dbdeb21f	Keep the overlay on the photograph when the view moves ... The overlay is a source-space picture; the canvas beside it shows whatever the crop, the zoom and the pan selected out of that same space. Drawn whole it stayed frame-sized while the photograph moved underneath, so zooming in left a map of the whole picture stretched over a detail of it. It now reports the visible rectangle as a clip, which the compositor applies for nothing. Resampling on the CPU instead would mean rebuilding a megapixel image on every frame of a drag, and putting it on the GPU would add a second texture to keep in step with the view. Pushed from the render path rather than the panel's sync: a pan changes no mask and no row, so nothing else needs to run, and rebuilding the row models on every frame of a drag would be waste. Straightening is handled by rotating the image. A quarter turn or a flip permutes the axes and a clip rectangle cannot say that — noted where it happens rather than left to be discovered. The proper fix is to run the overlay through the same shader prologue the photograph goes through, which is the right answer and a larger one than this. Four tests, and the one that matters asserts the clip *narrows* when zoomed — which is precisely what it failed to do.	2026-08-22 08:53:02 +02:00
dtourolle	9b4f0815e5	Show the regions, click one, and adjust it ... The local panel sits above the adjust panel because it decides what those sliders act on; below it, a photographer would set an exposure and only then discover which scope it landed in. Selecting a layer re-scopes the existing controls to that layer's chain — there is no second set of sliders, and there must not be, or every operation added to `ops/` would need a local twin. The overlay is drawn over the canvas rather than blended into the render, because it is a diagnostic and not an edit: it must not reach the histogram, an export, or the texture handed to the compositor. Nearest- neighbour always — the map's values are *names*, so smoothing between region 4 and region 9 invents a colour belonging to neither and softens exactly the edge the overlay exists to show. Picking gets its own touch area above the pan handler. Panning wants press-drag-release and picking wants a click; interleaving them in one handler is how a drag ends up selecting a region the user was scrolling past. Shift is tracked as window state because a TouchArea's click carries no modifiers. Three states a layer can be in are worth distinguishing, and each has a different remedy: stale needs re-segmenting, "no adjustment yet" needs a slider moved, and the ordinary case needs nothing said. A bare selection renders nothing and looks identical to a broken mask, which is the first thing a new user will hit. Known rough edge, commented where it happens: segmentation blocks the UI thread for about half a second. Moving it to a worker needs the develop session — GPU resources behind a RefCell shared with every callback — to be reachable from another thread, which is a restructuring rather than a change to the call. The button says "Finding regions…" first so the stall is announced rather than looking like a hang.	2026-08-22 08:39:17 +02:00
dtourolle	5ecb35864f	Put the region map behind the sliders that were already there ... A mask layer holds a real develop chain, so the develop panel can edit one with no new controls: select a layer and the same sliders read and write its chain instead of the graph's. An operation declared in `ops/` tomorrow becomes locally adjustable by existing, which is the payoff for making a layer a chain rather than a handful of special-cased parameters. `segmentation.rs` joins the two arms into the one thing the view needs. The model reads the image through a neutral graph rather than the edited one, so a segmentation survives an exposure change instead of being invalidated by every slider. Arm B failing is not fatal: a missing or unreadable model leaves a working watershed map, because refusing to segment at all would trade a working feature for a strict one. The overlay colours groups by a golden-angle walk over hue. Deterministic rather than random, so a region keeps its colour across a level change and the eye can track it; boundaries drawn black over the fill, because two adjacent groups landing on near hues read as one region and telling them apart is the whole reason to look at it. Clicking the photograph creates the layer if none is selected — that is how a local adjustment begins, and making the user press "add layer" first would be a step with no decision in it. Shift-click extends, and clicking a region already selected removes it, so one gesture both adds and corrects. `segment-readback` is a new dr-gpu feature and not a loosening of `readback`. The region-graph transfer is once per image on a worker; the one AC-8 forbids is per frame in the render loop. Sharing a switch would have forced a build wanting local masking to unlock the other. F3 still stands and the feature name says so.	2026-08-22 08:39:17 +02:00
dtourolleandClaude Opus 5	c9c5c43aa1	Carry the library across when its home moves ... The previous commit moved durable data out of Android's cache directory, and on its own that would have been an upgrade that quietly discarded work. The app looks in the new location, finds nothing, and rescans a library of tens of thousands of images over the network — while the old copy, including every offline rating and edit that had not yet synced, sits in a directory the system is free to delete. So the account's directory is moved once at startup, before anything opens a store. A rename rather than a copy: both are inside the app's own data on one filesystem, so it is atomic and cannot half-finish. An existing destination wins and the move is skipped — that covers a second run and a fresh install, and in neither case may this overwrite live data. A failed move is logged, not fatal. The cost is a rescan, which is recoverable; refusing to start is not. Two tests, against ordinary directories rather than the platform's idea of a cache: one puts an unsynced sidecar in the old location and asserts it is readable in the new one afterwards, the other pins that live data is never overwritten. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-17 12:32:20 +02:00
dtourolleandClaude Opus 5	44f0a4971b	Show the folder picker on the platform that needs it most, and upload at once ... Two faults, both of my own making, reported from the tablet as "I cannot select a location" and "it does not upload". **The picker button was gated on `target-selected == 1`.** That index was Remote's position while both targets were offered. Making the target list platform-aware narrowed Android's to Remote alone, so Remote became index 0 and the button disappeared — on the one platform where the picker is the *only* way to set a destination, since a device folder is not reachable there at all. It is gated on a boolean derived from the target now. An index into a list whose length varies is not a fact about the target, and writing it as one is what made a correct change break the thing it was meant to fix. **A queued export waited for a sync pass.** Staging first is deliberate — an export is finished on disk the moment it is written, and offline is then just a longer queue — but nothing drained the outbox until the next sync, so "Queued for Exports" sat unchanged and read, fairly, as an upload that never happened. A finished batch that wrote anything now drains immediately. The sync-pass drain stays: the first makes an upload feel immediate, the second is what eventually delivers the exports made in a tunnel. Committed without the parallel session's in-flight collection work, which is mid-save and does not compile; verified by stashing it and building this tree alone. 281 dr-ui tests pass, clippy clean. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-17 12:01:12 +02:00
dtourolleandClaude Opus 5	a8b28136a6	Merge the batch export, and settle the seven-branch merge ... Resolves the last of the parallel work. Two conflicts worth recording, because both were semantic rather than textual: `render_for_export` gained a colour space on master while the batch branch was rewriting the single-image export path around it. Kept both: the batch request supersedes the synchronous path, and the space still has to be chosen at render time because the conversion happens in the shader before the clip to 0..1. `render_open_frame` takes it as an argument rather than reaching for a controller it does not hold. The map-wait moved into `readback::await_mapping` on one branch while another was editing the constant it used, so `READBACK_POLL_LIMIT` survived the merge with no callers. Removed rather than left for clippy to find later. 1164 tests pass, clippy clean, fmt clean. Traceability 53.0% -> 54.3%. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-17 10:11:44 +02:00
dtourolle	cfff6a3302	Merge branch 'zero-copy-display' ... # Conflicts: # core/dr-gpu/src/adjust.rs # ui/dr-ui/src/develop.rs	2026-08-17 10:04:14 +02:00
dtourolle	9fc8721fa8	Merge branch 'histogram' ... # Conflicts: # ui/dr-ui/src/lib.rs	2026-08-17 10:00:27 +02:00
dtourolleandClaude Opus 5	7d3c8c521f	Export a whole selection, on a thread that is not the interface's ... The export button rendered, resampled and encoded a 24 MP frame on the UI thread and the window was dead for all of it. That was written down as a known compromise, on the grounds that a batch is what makes the wait intolerable rather than merely noticeable. This is the batch, so the compromise comes due. The grid's selection now exports (FR-EXP-7). A worker thread takes a clone of the `GpuContext` — an `Arc` pair over a device and a queue — and opens each photograph for itself: fetch, sidecar, decode, demosaic, render at full size, resample, sharpen, encode, write. Nothing of that touches the interface, which keeps drawing throughout, and the progress goes where every other background job's does: one row in the activity register, with a count and a bar. Why the worker does not borrow the session it could have had. A `DevelopSession` owns the `AdjustPass` the canvas renders from, so handing it to a worker would stop the develop view drawing for the length of the batch — the same freeze, moved. Opening a session per image instead costs a `Demosaicer` and an `AdjustPass` each time round, and the pipeline cache is per-pass so the composed shader is recompiled per image rather than once for the run. Against a full-resolution decode, render and encode that is a few percent, and it keeps this file out of the pipeline `develop` owns. A reusable export pass is the obvious next economy if a profile ever says so. The open image is the exception, and it is why the develop button is not simply a one-image batch. Its edit lives in the interface's session and may not have reached a sidecar yet, so a worker that re-opened the file would export the saved version rather than the one on screen. That frame is therefore rendered by the caller and handed over as `Source::Rendered`; everything after the render — the Lanczos reduction, the encode, the write, which is the larger half of the wait and all of its variance — still leaves the UI thread. So the develop export is no longer synchronous, but it is not fully off-thread either, and the doc comment says so rather than claiming otherwise. Cancellation (NFR-ARCH-3) is an `AtomicBool` read between stages, and the export button becomes the cancel button while a run is live — a batch that could only be stopped by not touching the selection would be a trap. Waits on another worker use `recv_timeout` rather than `recv`, so a cancelled batch sitting on a forty-megabyte download gives up within 100 ms instead of when the transfer finishes. The honest bound is worse than that: a frame already in render has no interior stopping point, so the worst case is one image. Closing that needs the render itself to become interruptible, which is NFR-ARCH-2's scheduler and not a finer poll here. Failures are per image and typed (NFR-ARCH-4). One unreadable body, one folder that cannot be written, one server that went away — each is a message on the channel, a line in the log, and a count in the summary, and the batch carries on. A run with any failure keeps its row until it is cleared, because that is the row somebody came to the list to find; a cancelled run does not, because they asked for it. Two collisions that look alike and are not. `CollisionPolicy` is the user's answer to "a file of this name was already there", and Overwrite is a fine answer to that. It is not an answer to "the frame I exported four seconds ago was also called this" — two folders in a library each holding an IMG_0001 is ordinary — so a name the run has already issued is always stepped past whatever the policy says about the folder. Both halves are held by tests. Supporting changes, each smaller than it sounds. `open_session` comes out of `load_bytes` so the worker shares the JPEG-versus-RAW routing rather than carrying a copy that would drift; the half that builds a `slint::Image` stays behind, where it belongs. `LibraryController::selected_image_paths` answers from the catalog rather than from the loaded window, because selection is by id and survives a scrub — a selection made before scrolling routinely names photographs no row holds. `cache_context_for` takes an id for the same reason, so a batch reads the originals cache instead of re-downloading three hundred files. `format_date` is shared so `{date}` and the timeline agree about what day a photograph was taken. Left undone, deliberately: the batch is sequential, where FR-EXP-7 asks for all available cores. Four full-resolution frames in flight is tens of megabytes each and a straightforward way to exhaust a tablet, and the GPU is shared with the interface in any case. Also undone: exporting with a chosen preset rather than the current export settings — that is FR-EXP-5's machinery, which does not exist yet. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-17 09:59:57 +02:00
dtourolleandClaude Opus 5	0233df4bf2	See what the highlights are doing: a live histogram (FR-DSP-7) ... Exposure, blacks and whites were set by eye. Nothing said a highlight had blown — the canvas shows white where a channel is at 250 and white where it is at 255, and the difference is the whole question. **Counted on the GPU, not on the readback.** There is a full frame sitting in CPU memory on every canvas update right now — `AdjustPass::read_output`, the bridge spike S1 removes — and walking it would have been thirty lines and no shader. FR-DSP-7 states the mechanism and not just the feature: "these derive from a GPU-side reduction into a small buffer. Per-frame CPU readback of image data is prohibited." A histogram founded on the bridge would be correct today and deleted by S1, and would meanwhile be the reason the bridge could not go. What crosses the bus here is 4104 bytes whatever the image size. The reduction tallies into workgroup memory first and merges once per workgroup. A photograph is not noise: a clear sky puts tens of thousands of adjacent pixels in one bin, and contending for that single global atomic serialises the dispatch. **On the settled frame only.** `render_now` already knows whether a gesture is still moving — `draft` is the flag `redraw` derives from `was_coalesced` — so the dispatch and its transfer happen once when the slider stops rather than on each of the forty frames a drag emits. Nothing is lost: a histogram flickering past under a finger is not a reading anyone takes. FR-DSP-7 requires exactly this, that it not extend the FR-DSP-3 frame budget. Luma is weighted in 8.8 fixed point — 54, 183, 19, summing to 256 exactly — rather than in floats. Not thrift: it makes the shader's arithmetic reproducible bit for bit, which is what lets the test below be an `assert_eq` against a CPU count rather than a tolerance. ARCH §6.13's line about integer state, applied where it happens to also be free. **What the numbers were checked against.** A flat frame must put all 4096 pixels in one bin and one only. A 256-wide ramp must occupy every level with exactly the same count, which is what catches an off-by-one in the quantisation — a `floor` where a rounding was needed shifts the whole photograph one bin left and looks like nothing at all. And a 101x37 frame of seeded pseudo-random pixels — deliberately not a multiple of the 16x16 workgroup, so the edge tiles run off the image — is compared slot for slot against a second, obvious CPU implementation. Exact equality, no tolerance. The CPU version is a deliberate reimplementation rather than shared code: the bugs worth catching here are ones shared code would commit identically on both sides. Above that, the presentation arithmetic is unit-tested headless, because it is where a wrong answer is invisible. A histogram of the wrong shape looks exactly as plausible as one of the right shape. So: 64 columns because it divides 256 and an uneven fold draws an even ramp as a comb; the peak excludes the end columns, or a night scene scaled against its own black spike is a flat line with no information in it; heights are clamped into the plot; and "0%" is kept distinct from "<0.1%" and from "—", since an indicator reading "clipped" over a figure reading "none" is a panel contradicting itself. Clipping counts a *pixel* with any channel at an extreme, not a channel. Any, because a blown red has no gradation left in it however much green and blue still hold — and it is the saturated highlight, the sunset and the red jersey, that clips first and recovers worst. Per pixel, because counting channels can report 200% of a frame clipped, and a percentage above 100 is a readout nobody trusts again. Two affordances for it, which NFR-A11Y-3 asks for: a bar standing at the end of the plot the tones are piling against, and a figure saying how much. Either alone reads. The panel sits directly under the capture metadata and above every control, because it is what the controls are judged against. It is hand-built rather than generated, and ARCH §4.3a is untroubled: a histogram is not an operation — no parameters, changes nothing, answers a question rather than asking one — and nothing in it reads a parameter out of a descriptor. Three plot colours and a neutral luma trace join the palette. That is the swatch's exception rather than a second one: a per-channel histogram has to say which channel, and no achromatic treatment distinguishes red from blue, so the hue is data exactly as the image beside it is. Held well back from full strength for the reason the theme preamble gives. The bounded, non-parking map wait moves out of `AdjustPass` into `readback::await_mapping`, shared with the histogram's transfer. Thirty lines of load-bearing reasoning about frozen interfaces and lost devices, and two copies of it would have drifted. The histogram describes the frame on the canvas, so it is in the output colour space FR-DSP-7 asks for, and when zoomed it describes the visible region — a photographer inspecting a highlight at 4x is asking about that highlight. A device that cannot build the reduction loses the histogram and keeps the photograph. Still to do for FR-DSP-7: the pixel colour readout under the cursor. 324 tests pass, clippy and fmt clean. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-17 09:55:40 +02:00
dtourolleandClaude Opus 5	cf8f5b632f	Show the develop frame itself, instead of a photocopy of it ... The oldest open item in the project (ARCH §6.1, spike S1, AC-8). Every frame in develop was read off the GPU into a `SharedPixelBuffer` and handed back to Slint to upload again: ~7 ms at 4K against a 0.28 ms compute pass, 96% of the frame spent carrying pixels to the CPU and back so they could be drawn where they already were. Slint 1.17 will adopt a `wgpu::Texture` directly, and the whole of what that needs is arrangement rather than code. **One device, made before the window.** A texture belongs to the device that allocated it, so the compute passes and the compositor cannot each open their own. `GpuContext::new_shared` opens one and hands back the instance and adapter alongside it; `dr_ui::shared_gpu` gives all four to `BackendSelector::require_wgpu_29(WGPUConfiguration::Manual { .. })`. That call has to come before the first window, because creating one selects a backend for you — which is why the GPU is now opened at the top of `run` rather than two hundred lines down beside the other controllers. dr-gpu still names no UI type. It hands out raw wgpu and does not ask who is compositing (ARCH §6.5a). **Vulkan only on the shared path**, where headless keeps its GL fallback. wgpu's GL backend reaches its display through EGL at instance creation, and before a window exists there is no display handle to give it — so a GL instance cannot later produce the window surface Slint needs from it. A machine with no Vulkan gets no shared device and browses without develop, which is the same degradation as no adapter at all. **`renderer-femtovg` becomes `renderer-femtovg-wgpu`.** The old one is FemtoVG over OpenGL and cannot be handed a wgpu texture at all. It is not kept alongside as a fallback: FemtoVG-over-GL has no branch for an imported texture, falls through to "render this image into a buffer", gets nothing, and draws nothing — a blank canvas with no error, which is worse than the failure it would be papering over. The consequence is stated plainly in the manifest: the desktop app now needs a working wgpu adapter to open a window. **Two output textures, not one, and this is the part that is not obvious.** Slint repaints when the image property *changes*, and it decides that with `PartialEq` — which for two images over the same `wgpu::Texture` says "unchanged". A pass that reused a single target would have rendered every slider move correctly on the GPU and shown none of them: right, and invisible. `AdjustPass` alternates between two targets, so consecutive frames are genuinely different values. It also settles the read-while-write question that one queue was already answering. `RENDER_ATTACHMENT` is added to both render targets. Neither pass uses it; Slint rejects an imported texture without it, on the reasoning that a compositor handed a texture may need to draw into it. **`AdjustPass::read_output` is deleted rather than gated.** It and `export_pixels` were the same transfer under two names, and the comments explaining why they were separate are the point of the whole criterion: reading pixels back to *display* them is the defect, reading them back to *encode a file* is the only way a file is made. The display twin is now gone outright, which is stronger than a feature flag — it cannot be turned back on. `export_pixels` is untouched and still ungated. The `readback` feature comes off dr-ui, darkroom-desktop and darkroom-android; it stays in dr-gpu, where it still gates `RenderTarget::read_pixels` and the segmentation field readback. `examples/develop` moves to `export_pixels`, which is honest — it writes a PPM — and so no longer needs the feature. Four tests, each named for what it protects and each of which fails without a screen if the property it guards breaks: - the adjust target satisfies every condition Slint's import checks, asserted in the crate that owns the descriptor, because a descriptor that drifts fails at runtime on a real display and nothing else would notice; - consecutive renders are different textures, and the third is the first again, so the alternation is a rotation and not an allocation per frame; - the develop canvas has no CPU pixel buffer and does have a wgpu texture — AC-8 itself, in the terms Slint uses; - consecutive frames compare unequal as `slint::Image`, which is the property the repaint actually depends on. The zoom test's readback moves into the test module. It has to: there is no library function that copies a displayed frame to the CPU any more, and that is the point — the round-trip now exists in the test binary and nowhere a shipping build can reach. **What is not proven.** No GUI was run. What is verified is that the texture satisfies the import contract, that the import succeeds, that the canvas is a texture rather than a buffer, and that consecutive frames are distinguishable. What is unverified is everything that needs a display: that Slint's FemtoVG wgpu renderer adopts the Manual configuration on a real surface, that the picture appears the right way up and the right colour, and the frame timing that motivated the whole exercise. Android is untouched by testing — the android backend routes a WGPU29 request to Skia, whose wgpu surface does handle imported textures, but that is read from the source, not observed. 56 dr-gpu tests and 255 dr-ui tests pass, clippy clean under `-D warnings`, fmt clean. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-17 09:54:00 +02:00
dtourolleandClaude Opus 5	4b36ca66aa	Render an export into the colour space its file will claim ... The colour-managed export branch left one call site deliberately unfixed, and this is it. `render_for_export` composed with the default sRGB shader, so a Display P3 export failed with an accurate error rather than producing a mislabelled file — the right way to leave a half-finished path, and no way to leave it. The space is chosen at render time because that is the only time it can be: the conversion happens in the shader, before the clip to 0..1, so by the time pixels reach an encoder they are in exactly one space and the only honest thing left is to label them. `Frame::in_space` carries which, and a mismatch between what was rendered and what was asked for stays a typed error. Also regenerates the traceability matrix over the four merged branches. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-17 09:34:57 +02:00
dtourolle	8e330a24e9	Merge branch 'undo-redo'	2026-08-17 09:26:23 +02:00
dtourolleandClaude Opus 5	8ea92545df	Stop the export folder forgetting itself, and let Android reach one ... Three faults, compounding into an export that could not be made to work on a tablet at all and a destination that appeared to reset on its own. **Switching target destroyed the destination.** One field held both a filesystem path and a remote folder, so changing the target had to clear it — `/home/x/Exports` carried to the server would have offered to create a folder called `home` at the library root. The consequence was that merely looking at the other option threw away the destination already chosen, which reads, correctly, as a setting that will not stick. There are two fields now. Each target remembers where it was pointed and switching is free; `active_destination` picks between them so no caller can reach for the wrong one. **The library root read as "unset".** The picker opens at the root, so confirming it where it opens stored an empty string — indistinguishable from "ask each time" and looking exactly like the picker had done nothing. Empty now means the library root for a server destination, which is a real folder and the one the photographs are already in; it means "ask" only for a device folder, where no path is worth assuming. The page labels it so. **Android defaulted to a target it cannot use.** A device folder there means the Storage Access Framework, which provides no filesystem path (ARCH §6.9) and is not implemented — so the default target could never succeed however the destination was filled in. The export button said "no export folder is set", the settings page offered no way to choose one, and the only way out was to guess that the other target was the working one. The device target is now absent from `ExportTarget::available()` on Android and the default there is the server, which needs no platform work at all. A settings file carrying an unreachable target — copied from a desktop, say — is corrected on read rather than left to fail at the last step. Seven tests, each named for the fault it prevents returning. The compatibility one matters most: a file written before `remote_destination` existed keeps its device path and gains an empty remote one. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-17 09:25:15 +02:00
dtourolleandClaude Opus 5	7f524d2fd0	Give a mis-drag a way back ... Develop edits now save themselves to a sidecar the moment you leave the image, so until this there was no way to undo one — the mistake was persisted and the only recourse was to remember the old number. The history is a stack of snapshots, because the edit graph is already plain data: `Preset::capture` reduces it to what differs from default and `Preset::apply` puts it back, so undo is those two calls and nothing else. A command object per action, with an inverse beside it, would have been a second thing every operation had to register — and operations are declared in YAML precisely so that a new one needs no code written for it. A snapshot cannot fall behind them. The interesting part is coalescing. A slider drag emits an event per frame and must be one step, not forty. Nothing in the interface reports a gesture boundary — the same wall the render coalescing hit, and it is answered the same way rather than by threading a "finger is down" out of every slider, curve point and crop handle. What stands in for the boundary is the control plus recency: changes to the same control within 700 ms amend one step. Which control is "the same" is asked of the graph, not listed: an operation whose declared presentation claims a parameter is one where a single gesture moves several — a curve point carries an x and a y — so those coalesce as one widget. Nothing in the history names the tone curve. The compromise, and it is a real one: a control let go of and picked up again within the window is one step rather than two. Buying the other answer costs a gesture-boundary signal on every control, which is more surface than the difference is worth. The stack is bounded at 64 states for NFR-RES-1 — a develop session stays open for hours. Sixty-four rather than a byte cap: what is being bounded is steps a photographer would want back, and a byte cap would give the elaborate edit the shallowest history, which is exactly backwards. The session owns its history and every mutator records into it, so the callbacks in `lib.rs` cannot change the edit and forget to — with a dozen generic callbacks that would have been one press of undo away from wrong every time a control was added. Opening a photograph makes its stored edit the floor rather than a step: it is not work done in this sitting, and an undo reaching behind it would discard a previous session's edit and then save that on the way out. Not yet done, from FR-DEV-5: history is per-session and in memory, and there are no named snapshots. What mattered was that a saved mis-drag had no way back at all. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-08-17 09:03:34 +02:00