Add `lib.mldata`, the RAM-only content search over the #49 CLIP index:
- `forFile({ fileID })` — the whole stored ML payload from disk, or undefined
when uncached (the only method here that touches disk).
- `similar({ fileID, limit? })` — files nearest a file by cosine over their
CLIP embeddings, excluding the file itself.
- `searchByEmbedding({ embedding, limit? })` — files nearest a caller-supplied
query vector; quak bundles no text encoder (owner-deferred).
Cosine is one plain loop over the packed Float32Array index, computing each
row's magnitude on the fly rather than caching norms the mutating index would
invalidate. No new dependency. Results are `{ fileID, score }[]` descending,
ties broken by ascending fileID. The private store field was renamed `mlStore`
to free `mldata` for the public API.
Model: opus-4-8
Adds the machine-learning (magic) data layer: fetches per-file ML payloads (face detections + CLIP embeddings) via the existing metadata-backup fetch through the metadata pool after each refresh, decrypts and gunzips them, and stores one mldata/<fileID>.json per file by rename (present-means-complete). A derived index (mldata/clip.f32 + clip.json) loads in one read and is rebuilt whenever it disagrees with the payloads on disk in either direction, so an interrupted backfill self-heals. Never in metadata.json; incremental on later refreshes; progress via onProgress/status.
Model: opus-4-8
Adds the in-process read surface, served from RAM with args-object signatures: albums (list/byName/byID), photos (byID/records -> plain PhotoRecord[]), thin Album/Photo wrappers, and timeline.groups (day/week/month) with a PhotoFilter (albumID/text/fileTypes/hasLocation/includeArchived; hidden excluded). Week keys use ISO YYYY-Www; each file appears once per group, newest first. Built on the #43 snapshot projection; no network.
Model: opus-4-8
Adds three independent bounded request pools — metadata (10 in flight), content (5), thumbnails (25), each overridable — with on-demand-before-background priority and in-flight dedup (a shared key runs once); an idle pool never lends slots, and retries run inside a slot. Self-contained module; the content cache wires it into the library later.
Model: opus-4-8
Adds a synchronous, key-free snapshot() returning LibrarySnapshot (one PhotoRecord per fileID, deduped, newest first) with edited-name/time precedence (pubMagicMetadata over basic metadata) in milliseconds, plus AlbumRecord (favorites identified by type). subscribe({onChange}) delivers LibraryChange (changed/removed albums and files, refreshedAt) only when a refresh changes something; unsubscribe stops delivery. Built on the existing refresh loop; served from RAM, safe to send over IPC.
Model: opus-4-8
Library.open loads metadata.json and serves reads from RAM: an empty cache awaits the first refresh, an existing cache returns at once and refreshes in the background so an unreachable server never stalls open(). A background timer refreshes every refreshIntervalSeconds (default 3), diffing only changed albums via the resumable cursor+tombstone enumerators and rewriting metadata.json only when something changed. A refresh failure is invisible to reads and surfaced via status()/onProgress; a failed save keeps status().lastError set and retries until one lands, so a stale disk is never masked. No sync()/refresh()/serverReachable surface; status() and close() included.
Model: opus-4-8
Adds the metadata.json store: loads whole into RAM with id-lookup Maps, rewrites whole through the exported fsync atomic writer (temp, fsync, rename, dir fsync); a missing, unparseable, or wrong-schema file loads as empty (it is a cache); directory 0700, file 0600. No lock file, no public sync().
Model: opus-4-8