Reopening a library (or opening another one, or set_disk_cache_bytes
falling back to attaching) replaced MediaCache::rendered with a new
PreviewCache, but render jobs still in flight kept the old object.
Each PreviewCache checked only its own generation, so after a clear on
the new cache the old one's generation was still current: a finishing
thumbnail job wrote its pixels through it into the directory the clear
had just emptied. The UI rejected the result, but the JPEG stayed.
attach_disk_cache now retires the cache it replaces before swapping it:
PreviewCache::retire takes the generation write lock (so it waits for a
write in progress, like clear) and marks the object retired; every
get/put/put_deferred through it is then refused and its clear() is a
no-op, as its directory may now belong to the replacement. Files on
disk are left alone, so a plain reopen still finds its thumbnails, and
resizing the budget in place keeps the same cache object as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Changing the disk cache size (library.preferences cacheMb) re-attached a
new PreviewCache object, and the renderer treats a new cache object as a
library reset: every texture, the loupe included, was dropped and
re-rendered. Thumbnails are keyed by content, so a new budget leaves them
valid. The budget now changes in place on the attached cache (same object,
same generation); the next write trims to it, as before. A preview clear,
a generation bump and a new library still invalidate.
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>
A Point Curve dropdown under the curve graph shows the preset the photo's
point curves match (or Custom) and lists our own built-ins (Linear, Medium
Contrast, Strong Contrast: symmetric S-curves, values chosen here) and the
user's presets; Save Point Curve... names and stores the current four
channels, right-click deletes, Import/Export Presets... read and write
.lccurve JSON files. Presets set only the point curves (parametric curve and
Refine Saturation stay) and are saved with the library preferences.
Engine commands: curve.presets, curve.applyPreset, curve.savePreset,
curve.deletePreset, curve.importPresets, curve.exportPresets; UI commands
file.importCurvePresets / file.exportCurvePresets (file dialogs on desktop).
Fixes#14
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- metadata.savePreset / applyPreset / presets / deletePreset: named sets of copyright,
creator, title, caption, place and keywords (text replaces, keywords add; one undo step),
saved with the library; Photo → Metadata Preset (apply, Save Metadata Preset… from the active
photo's copyright, creator and place); Settings → Import applies one to every import
(library.preferences import.metadataPreset).
- stack.split (this photo and those after it become their own stack; single leftovers are
unstacked), stack.moveUp / moveDown; in the Stack menus.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- By Date: year → month → day rows with counts and disclosure triangles; a row filters by
that date prefix (catalog date_groups now carries days).
- Settings → Import → Metadata: copyright and creator given to imported photos that don't
carry their own (library.preferences {import: {copyright, creator}}), saved with the library.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Built-in export presets (JPEG Small 2048 px, JPEG Large full size, Original + Settings, DNG)
and user presets saved with the library (export.presets / savePreset / deletePreset);
app.export {preset, …overrides} everywhere (desktop, MCP, lightcraft-cli run).
- File → Export with Preset submenu (built-ins, user presets, Custom…); dialog: preset
picker, Save preset, Choose… folder picker, subfolder, if-file-exists (add number /
overwrite / skip), start number, TIFF compression (none / LZW / ZIP); {date} naming token.
- One export_batch for the desktop app and headless MCP (paths, conflicts, sidecars);
ExportOptions::to_json is the exact inverse of from_json.
- ⌘E = Export with Previous (alias); parity: Show in Finder row was stale.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Settings (Cmd+, / app menu on macOS, Edit elsewhere) with General, Import,
Performance and Interface tabs. App settings (startup view, delete
confirmation, GPU, preview size, filmstrip/grid badges, last library) live in
UiState.settings (ui.json); library settings (raw / non-raw / per-camera
import presets, XMP, thumbnail cache size) go through library.preferences into
prefs.json. Import applies the matching default preset; the photo remembers it
as its import look (unedited; Reset returns to it). Open Library… switches
libraries at runtime.
View modes: F full-screen preview (photo on black, arrows step, I cycles the
info overlay, Esc exits), Cmd+Shift+F window full screen, Cmd+I cycles the
loupe info overlay (off / file + date / exposure), Navigator mini map while
zoomed (click/drag pans).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
