Engine (crates/engine/src/segment/):
- One worker thread owns the model and the encoded photo; the session
sends jobs (with the render job for the model input) and gets results
over channels, never locking what the model holds. In the app
(Segmenter::background) clicks, descriptions, prepares and detail
passes return at once and Session::segment_poll applies results (one
undo step per settled selection, pending clicks shown on the photo);
the CLI/MCP wait for them. Newer requests for the same selection
supersede queued ones.
- Every job runs under catch_unwind: a candle panic becomes an error and
the model is reloaded next time; busy counters are reset by drop
guards; a dead worker is restarted. The model unloads after 10 min idle.
- segment.model.status / .download {acknowledged: true} / .cancel: the
download runs on its own thread; status via atomics (try_lock only).
Without the model every AI request fails at once with "The SAM 3 model
is not installed…"; renders/exports never need it; `seg` params make
AI masks from stored segmentations without it.
- Hostile documents: at most 4 detail patches per component (capped on
deserialize and in the renderer), at most 64 Object clicks.
UI: Object / Describe without the model open "Download the SAM 3
Model?" (size, folder, SAM License link; Not Now / Download, progress,
cancel, Try Again with the reason, Continue once installed); progress in
the Masking panel when the dialog is closed. Reverted the PR's unrelated
default change (mask overlay off + hover-red) to main's behaviour.
tools/install-sam3.*: --fail so error pages never land in files, 416
restarts instead of looping, the weights are verified before they are
moved into place (a bad file is deleted, never resumed from).
Docs: docs/ai-masks.md (in-app download, mirrors, SAM License summary,
no weights in the repo), NOTICE, parity LR-MASK-OBJECTS, What's New,
ROADMAP.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
photo.reload had no menu path, so the documented way to refresh CR3s imported
before their metadata was read (Photo > Reload from Disk) did not exist in the
app. It is now in the Photo menu and the photo context menu, and besides
size/preview-only it fills camera fields the catalog lacks (camera, lens,
exposure, GPS, capture time) from a fresh probe, never overwriting a set value.
CR3 files imported as preview-only with the 1620x1080 PRVW JPEG and no metadata
(no camera, capture time, exposure, lens or GPS): nothing read the container.
- crates/meta/src/cr3.rs: bounded ISO base media box parser for CR3 (Canon uuid
box with CMT1-4 and THMB, tracks with their sample entries, CMP1 coding header
and sample location, XMP uuid box). Every size/offset checked; depth and box
count bounded.
- Metadata: CMT1 (IFD0), CMT2 (Exif) and CMT4 (GPS) merged into one TIFF Exif
block, so CR3 reads like any TIFF-based raw; XMP from its uuid box.
- Preview: the full-size JPEG track (6960x4640 on an EOS R6 Mark III) before
PRVW/THMB; imports report the full image size.
- Tests: synthetic CR3 (boxes, tracks, merged Exif), truncation/corruption sweep,
JPEG track preferred over PRVW with fallback.
Raw (CRX) data is still not decoded; CR3 stays preview-only.
Photos in Recently Deleted could not be restored from the app: photo.restore and
photo.deletePermanently existed only as engine commands, and adding the same file
again just said "1 duplicate skipped" (the duplicate check counts deleted photos),
with the side panel that lists Recently Deleted collapsed by default.
- Restore and Delete Permanently in the Photo menu and the photo context menu,
in place of Delete, when the selection is in Recently Deleted.
- The filmstrip gets the photo context menu (it had none).
- An import that only finds files the library already has selects those photos:
in Recently Deleted (side panel opened, how to restore or delete permanently and
import afresh) or in All Photos. Mixed imports note how many are in Recently
Deleted. The message stays 6 s.
- Import review badges say "In Recently Deleted"; badges are translated.
- Japanese strings, parity rows, what's new; headless regression test.
LightCraft has no colour matrix for Nikon cameras. Because of this, NEF
files showed colours that were too gray and too green.
- Colour: LightCraft now calculates a colour matrix and a tone curve from
the JPEG preview in each NEF file. Sony ARW files use the same
procedure and the same quality checks. White balance is relative to
the as-shot look, as for ARW files.
- One function, camera_preview::file_local_look, selects the formats for
the fit and for the relative white balance. Photo::relative_wb in the
catalog uses the same formats.
- Black level: Nikon stores the black level (maker note 0x003d) in
14-bit units, also in 12-bit files. The decoder read it as a 12-bit
value. Because of this, 12-bit files from the D750, D780, D850, D7500
and Z 50 were too dark. Now the decoder divides the value by 4 for
12-bit files.
- The corpus gets the D7500 12-bit and 14-bit lossless samples. A test
compares their levels. The render cache version increases to 9.
Results on 13 NEF files that LightCraft can decode: LightCraft accepted
the fit for all 13 files. The mean colour difference from the camera
JPEG (CIE76 dE) decreased from 13-46 to 2.9-7.8. One file with mixed
light improved by a small quantity only (12.7 to 12.0).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Sony bodies from before ~2017 (RX100–RX100M5, RX10, NEX, SLT, ILCE-6000,
A7/A7II/A7RII, ...) write no plain 0x7313/0x7310/0x74c7 tags in the raw IFD,
so the decoder used unit WB multipliers (strong green cast, e.g. the CC0
DSC-RX100M3 sample), black 512 (800 on 1-inch sensors), and kept padding
columns at the right edge.
- White balance: WB_RGBLevels from the maker note's enciphered Tag2010
block (layouts per ExifTool's Tag2010a..i tables; byte substitution
p^3 mod 249 checked black-box on 15 CC0 files: SonyISO matches Exif ISO,
ILCE-7M3 levels match its plain 0x7313).
- Black level: recovered from the encrypted SR2SubIFD by known-plaintext
analysis (constant key in every file; RX100M6/ILCE-7M3 plain 0x7310 as
plaintext; 8 keystream bytes at offset 2510, plausibility-checked).
- Crop: DNG DefaultCrop or the maker note's FullImageSize.
- "12-bit uncompressed" ARWs hold 14-bit-scale data: black/white follow it.
- Render cache version bumped; corpus manifest + corpus test, unit tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
wgpu loads the driver of every backend in an instance's set while it
enumerates adapters. The compute device (crates/gpu) hard-coded
Backends::PRIMARY (Vulkan + DX12 + Metal) and ignored WGPU_BACKEND, and
was created from LightcraftApp::new on a background thread at launch, so
a crashing Vulkan driver (Intel UHD 630, igvk64.dll) killed the process
before the window appeared; the window (egui-wgpu) also listed Vulkan.
- lightcraft_gpu::backend: DX12 only on Windows (Metal on macOS, as before
on Linux) for both the compute device and the window;
LIGHTCRAFT_GPU_BACKEND=dx12|vulkan|metal|gl|auto|off, else WGPU_BACKEND;
backends missing from the build fall back to the default.
- The device is created only when GPU rendering is enabled, after the
first frame; the preference is applied before the window opens.
- Crash sentinel: gpu-init.marker in the settings folder around device
creation; if left behind, the next launch starts with GPU rendering off
and a notice saying how to turn it back on.
- Tests: backend parsing/selection, sentinel, window defaults, headless
snapshot with LIGHTCRAFT_GPU=0 / LIGHTCRAFT_GPU_BACKEND=off.
- Docs: gpu-pipeline.md (backends, env vars, troubleshooting), whats-new,
parity LR-BEHAV-GPU.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- safe_file: write policy documented (durable for what can't be recreated, atomic-only for
recreatable outputs); new write_atomic_nosync (temp + rename, temp removed on failure, no
file/folder sync); per-thread sync counter for tests.
- export::write_file (exports, renders, screenshots, merge previews, CLI/MCP) uses the
non-syncing writer; new write_file_durable keeps the sync for Edit a Copy (the TIFF becomes a
library photo). Catalog, sidecars, settings, DNG conversion/merges and smart previews stay
durable; the #93 original-overwrite guard is untouched.
- Import > Copy verifies the synced copy against the probe's content hash (SipHash-1-3/128 of the
whole file) instead of re-reading the source; byte compare when there is no hash. A file changed
since Review Import is now refused instead of imported with stale details. Move keeps its
byte-for-byte check before deleting sources.
- check_write_target: skip building the library-wide guard when nothing is at the target.
- write_new_unique keeps its read-back (DNGs replace raws; cheap next to encoding).
- Tests: no sync on the export path, durable writers still sync, Copy caught by the probe hash
(corrupt copy, stale hash, changed source); ignored timing test write_policy_timing.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Re-applies fix/issue-104-ui-fs on top of the data-safety fixes (integrate/safety):
- availability cache: originals and smart previews are checked on a worker thread; the UI
answers from the cache (grid, Info panel, photo menu, Missing Photos view)
- import split into ImportJob::prepare (worker) + commit_prepared, with Cancel; Copy keeps
#96's verified copies
- Find Missing Photos: find_candidates (snapshot, no I/O) + plan_find_missing (all file I/O,
on a worker, never the session) with #105's matching rules unchanged (name+size+hash;
renamed by size+hash; single name+size; ambiguous look-alikes skipped and reported; files
already in use excluded). The plan is applied with library.findMissing {found, missing,
ambiguous}, re-checked against the catalog then: photos relinked meanwhile are left alone,
files now in use are not taken. library.findMissing {folder} still runs synchronously.
- Build / Discard Smart Previews with background: true runs on a worker with progress and
Stop, keeping #106's atomic writes, is_valid checks and `repaired` count (also in
library.previewProgress); the render worker's smart-preview fallback uses is_valid
- Rename preview planned on a worker (plan_rename_photos) on the same planning core as
Session::plan_rename_with (MoveFs, case-only respelling by file identity, #95)
- Local folder listing via fs_cached; tests_offline (slow injected probe, frames < 300 ms)
Tests: worker-planned Find Missing equals the synchronous command for a renamed + ambiguous
library; a plan is re-checked when applied; background smart previews repair a damaged proxy.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
When open_library failed, the desktop app (and the web build) quietly ran
an in-memory session seeded with the demo photos: it looked like a reset
library and everything done in it was lost at quit.
- The session now starts empty and in memory (no demo photos) and
LightcraftApp::library_problem shows a blocking window with the path and
the error: Try Again, Choose Another Library… (app.openLibrary), Continue
Without Saving, Quit. Command-line files are imported once the user has
chosen.
- A temporary session shows a banner under the top bar (with Open
Library…) for as long as it lasts; it has no library, so nothing is
written anywhere. Opening a library ends it.
- ui.inspect → libraryProblem; widget ids for automation; documented in
control-protocol.md.
- Web build: same window (Try Again disabled: reloading the page retries).
- Headless UI test: locked library → window → Continue Without Saving →
banner, nothing written to the library → lock released → Try Again opens
it. Checked in the real app over the control channel too.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
main added Op::SetBrowsed, Catalog.browsed and Photo.local_baseline while
the snapshot still said version 1, so v0.2.0 read such a library in part
(unknown ops as log damage, unknown fields dropped on its next snapshot).
- journal::VERSION = 2 (now public), with a format table and rules in the
journal docs; a test with an exhaustive match over Op makes adding a
variant fail until it is assigned a version.
- Journal::open reads the snapshot header first and refuses a newer
version with CatalogError::Newer ("written by a newer version of
LightCraft"), even when its catalog wouldn't parse.
- A log record whose CRC matches but whose op doesn't parse is "newer",
not damage or a torn tail: refused before any file is modified.
- Opening an older (or snapshot-less) library writes a snapshot in this
format before anything is appended (LoadReport::upgraded_from); a new
library gets one at once, so v0.2.0 refuses it instead of reading a bare
log.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A failed append (disk full, dropped share) could leave part of its batch in
catalog.log; the retry (same seqs) then shared a line with the fragment and
the next load treated it as mid-log damage, setting later edits aside.
- Journal::append cuts the log back to the last whole record on error (or,
if that fails too, before the next append).
- FsStore drops a failed append handle so the next attempt reopens the file;
truncate of a never-created file is a no-op.
- The loader recognises a CRC-valid record glued after a fragment (logs
written by older builds) and skips only the fragment.
- log_bytes now counts the newline added to an unterminated last record.
- close_library writes the closing snapshot even when appending fails; the
snapshot absorbs the queued ops (Journal::snapshot_with_unlogged).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Library settings (prefs.json, presets.json, view.json): only a missing
file means "defaults". A file that doesn't parse is kept as
<name>.corrupt-<unix time> before the defaults are used; one that can't
be read (locked, I/O error) is never written this session (save_prefs
refuses, presets/view saves skip it). Warnings go to library.info →
settingsWarnings and Session::take_library_warnings; the UI shows each
once in a window (ui.inspect → notices, button:noticeOk).
- Desktop ui.json (holds the library location): written atomically (temp +
fsync + rename + dir fsync), saved as soon as the library path changes and
every few seconds when it changed, failures reported; a damaged file is
renamed to ui.json.corrupt-<time> and reported, an unreadable one is not
overwritten.
- Quit/close with changes only in memory: retry the save (log, then a
snapshot of everything), and if it still fails cancel the close and ask:
Try Saving Again / Quit Anyway / Cancel (ui.inspect → quitPrompt).
- Tests: engine (damaged prefs kept, unreadable presets/prefs untouched),
desktop (damaged ui.json kept, atomic write), headless UI (quit prompt
buttons, settings notice).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Two processes on one library each kept their own catalog and seq counter;
the last snapshot silently dropped the other's edits.
- lightcraft_catalog:🔒 LibraryLock holds an exclusive OS lock
(std File::try_lock: flock / LockFileEx) on <library>/catalog.lock for
the session; who holds it goes to catalog.lock.owner (separate file: a
Windows lock also blocks reads). Released on drop and by the OS when the
process dies, so leftover files from a crash never lock anyone out. File
systems without lock support open unprotected with a warning.
- Session::open_library takes the lock before reading anything and fails
with EngineError::LibraryInUse ("this library is already open in
LightCraft 0.x (process N on host)"); reopening the session's own
library hands its lock over.
- lightcraft-cli (mcp/run/snapshot --library) adds how to drive the
running app instead (--control + mcp --connect).
- Tests: in-process, leftover files, a killed child process, two engine
sessions, CLI e2e (mcp --library holds it, run --library is refused).
Existing tests that reopened a library while it was open now drop the
first session.
- docs: parity row LRC-LIB-CATALOG-LOCK, mcp.md, web.md (no guard across
browser tabs yet), whats-new.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The folder move and the photos' relinks form one undo step: undo renames
the folder back on disk (files and sidecars along) and restores the
paths, redo repeats it. A destination taken in the meantime is never
overwritten; the step is refused, reported and stays on the stack.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A line that is not a JSON object with a string `method` (HTTP request
line, invalid UTF-8, non-object JSON, >4 MiB line) now gets one error
reply and the connection is closed, so a browser's cross-origin fetch
can't smuggle a command in its body. Connections are capped at 16.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- File > Back Up Library... (web): a zip of the catalog files and every
stored original, built entry by entry; Restore Library from Backup...
reads it into a new library folder and switches only when complete
(the previous library stays in storage).
- Failed flushes to browser storage make the catalog Store refuse
writes, so changes show as unsaved (top-bar warning) and are retried
every 2 s instead of being lost silently.
- A picked/dropped photo whose bytes can't be stored is not added.
- One tab per library (Web Locks); a second tab shows a message.
- Notices: storage not persistent, library failed to open (temporary
session), experimental build; ?reset asks first; a panic shows a
message instead of a frozen page; long toasts wrap.
- Hosting: _headers/.htaccess no longer mark the unhashed .js/.wasm
immutable; HOSTING.md rewritten for the actual build.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Copy import used exists() then std::fs::copy: no sync, no comparison, and
a file appearing at the chosen name in between was replaced. It now goes
through import_move::copy_new, which reuses Move's copy_verified: a new
file (create_new, retrying -1, -2… on AlreadyExists), synced and compared
byte for byte with the source; a copy that fails or differs is removed and
reported as a failed import. Copy as DNG's copy step uses the same path.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Convert to DNG / Copy as DNG: the encoded DNG must decode to the same raw
data, then goes through safe_file::write_new_unique (temp file, sync,
read-back, hard-linked to the first free <stem>.dng / -2 / -3 name, never
replacing a file). On failure no DNG is left, the photo is not relinked
and the raw copy is kept.
- Photo Merge writes its DNG the same way.
- Smart previews are written atomically; smart::is_valid (header + complete
JPEG) decides "built", has_smart_preview and the offline fallback, so a
proxy cut short is rebuilt (reported as `repaired`); moving proxies to a
new folder never deletes a good one in favour of a damaged copy and
copies across drives atomically.
Stacked on the #93 branch (shared lightcraft_catalog::safe_file helper).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Brandon Thomas
Maurice Rogers
Trey Reynolds