Prevent parallel Jellyfin, Subsonic, and quality hydration transactions from colliding on the shared SQLite cache during Resync all. Keep WAL reads concurrent and retain a bounded timeout for external writers.
cx
Give track editing a dense spreadsheet pane, move album tags to an independent sidebar, and isolate remote metadata and artwork lookup in a loading-aware popup.
cx
Promote metadata editing to a routed full-page workflow with tabular per-track fields, ordered artist credits, provider identifiers, and compilation handling.
Add bounded artwork selection and retrieval through MusicBrainz, Discogs, and Last.fm. Direct and sidecar saves preflight immutable rows, verify rich tag writes, cache covers by content, and update exact database ids transactionally.
cx
Add deterministic end-to-end recovery measurements for the production legacy projector at 20k and 200k rows. Validate album and artist FTS through reconciliation updates and deletions, and provide a read-only runtime integrity probe for active generations.\n\nPublish catalog generation, size, row count, integrity state, and effective surface routes in diagnostics while logging native versus legacy loads with their fallback reason.\n\ncx
Consume preflight data when loading clears so the modal cannot spin indefinitely.
Reuse the editor for ephemeral folders and bind sidecar or direct writes to the exact active session.
cx
Restore the selected-version editor with sidecar-safe defaults, inspected tag layers, guarded MusicBrainz and Discogs lookup, and confirmed verified direct writes. Keep paths Rust-owned and reject stale or injected drafts.
cx
Inspect every tag layer before editing, target the container's canonical writable tag, and read values back before reporting progress. Preserve secondary layers by default, support explicit ID3v2.3 compatibility and synchronize compatible modern layers only when requested.\n\nMake sidecar clears persist across rescans while preserving omitted-field compatibility.\n\ncx
Treat Local Library resync actions as complete source reconciliations so provider IDs removed or reminted by Jellyfin are pruned only after a successful sweep.
Add regressions for a fully remapped Jellyfin identity set and for the QML resync contract.
cx
Associate physical copies only when normalized album identity and strong track-title/duration overlap agree. Keep every source visible on one card and resolve each authoritative album id into the existing version cache.
Order versions by delivered quality and then track count, expose inferred edition labels and full format metadata, and keep source filters aware of every represented copy.
cx
Route numeric playlist details through persisted membership while offline. Resolve ready Qobuz downloads from the shared cache, append local and reachable Plex sidecars in stable order, and keep the page read-only without network access.\n\ncx
Order every source by the active grouping key before the bounded merge so later pages preserve the visible prefix. Remove the accumulated QML reorder that moved the viewport when new rows sorted ahead.
cx
Keep one compatibility ListModel mounted and publish stable page prefixes through rowsInserted notifications. Preserve semantic anchor restoration only for grouped reorders so ordinary lazy pagination cannot move the viewport.
cx
Keep the default alias-free matcher inside the test module now that production artist detail always uses corpus-derived family aliases. This removes a release-only dead-code warning without changing matching behavior.
cx
Capture the visible semantic anchor before requesting the next compatibility page and retain it across bridge signal ordering and the ListView polish pass. This prevents the loading latch from dropping early and avoids recursive page requests during viewport restoration.
cx
Collapse repeated collection-and-contributor credits in the legacy Artists reader while retaining isolated collaborations. Preserve Unicode artist identities, resolve the collapsed row back to every family album, and use lexical QML timer ids so query coalescing remains live.
cx
Derive one canonical artist identity when an album-artist prefix repeats with multiple bullet-separated contributors, while preserving source-faithful credits and one-off collaborations. Rebuild schema-v4 catalogs side-by-side so existing installations receive the corrected artist rail without a rescan or in-place database migration.
cx
Restore the semantic anchor in viewport coordinates and suppress lazy-page requests while the ListView is being repositioned. This avoids treating content coordinates as screen offsets and prevents recursive page loads during restoration.
cx
Anchor compatibility page updates to the first visible track and its partial-row offset, then restore after Qt finishes replacing the model. Invalidate deferred restores when a newer document wins.
cx
Use origin-relative ListView scroll coordinates and terminal signals so compatibility pagination cannot stall after model replacement. Keep a manual Load more fallback and collapse duplicate page requests before Qt publishes busy state.
cx
Adopt fully parsed SACD generations atomically into library.db and preserve local row IDs across image moves. Keep failed reads non-destructive, reject stale metadata writes, and project the virtual tracks through the existing local catalogue.
cx
Project Search3 and per-album results into atomic source-generation pages, authorizing prune only after a complete enumeration.
Reject malformed authoritative responses, invalidate late writes across cancellation and profile changes, and sanitize secret-bearing transport errors.
cx
Publish bounded essential metadata pages through source generations, preserving delta sync and authorizing prune only after a complete full pass.
Hydrate MediaSources in persistent prioritized batches with cancellation epochs, startup resume, bounded retries, and coalesced catalog catch-up.
cx
Fetch Plex tracks in bounded container pages and commit each page with its per-section generation checkpoint. Resume interrupted sections, preserve hydrated quality, and authorize stale-row pruning only after the declared total is complete and identity-exact. Sanitize HTTP failures so authenticated request URLs never reach logs.
cx
Stream each registered root into bounded extraction batches, persist fingerprint and checkpoint generations, and prune only after a complete reachable pass. Add local watcher hints plus separate periodic local and network reconciliation.
Preserve CUE identities, retry unreadable files, and keep cancellation, traversal errors, offline roots, and overlapping roots from authorizing destructive cleanup.
cx
Materialize source-scoped artist aggregates and FTS, then expose exact keyset pages and bounded A-Z metadata for the existing Artists rail.
Query the selected artist's albums through the indexed credit relationship with an independent bounded model, generation cancellation, artwork updates, and per-surface legacy fallback.
cx
Materialize album browse fields and FTS in the derived catalog, then expose exact counts and stable keyset queries for the current filters, sort, grouping, and enabled sources.
Bind the existing Albums layout to a bounded native Qt model with asynchronous page misses, anchors, selection ranges, generation cancellation, artwork updates, and per-surface fallback. Resolve Plex native edition keys directly and retain the metadata-mode legacy reader.
cx
Add an opt-in QAbstractListModel backed by keyset pages from the derived catalog, with bounded residency, global query semantics, source-aware actions, and per-session fallback to the existing reader.
Wire profile-scoped bootstrap locations and refresh the native surface only after a complete catalog is active.
cx
Clone the active generation for bounded source reconciliation, advance watermarks only after complete observation, and prune only the completed source.
Coalesce catch-up after authoritative local and media-server writes while retaining the last complete generation on failure.
cx
Build the catalog side by side from read-only local, Plex, Jellyfin, and Subsonic cache snapshots after the first useful Qt frame.
Persist bounded batch checkpoints, preflight disk capacity, validate materializations, and activate generations atomically while preserving the existing reader as fallback.
cx
Introduce a frontend-agnostic generation schema with stable source identities, materialized album and artist structures, trigram FTS, matching sort indices, and descriptor-bound keyset queries.
Add deterministic SQLite coverage and an explicit one-million-track query gate.
cx
Bound each enabled source to an independent candidate page and merge one stable global Tracks page while advancing only consumed offsets. Include remote counts and artists, preserve Plex rows past 5,000, and reject stale search or sort generations before state and UI publication.
cx
Opening a 247-file box set from a NAS took ~9.3 s. The instrumentation
added in the previous commit put the whole cost in one place:
[ephemeral][perf] parallel tag reads: 9.268s for 247 files
[ephemeral][perf] serial bookkeeping (artwork + ids): 29.4ms
Everything that is not a file read — artwork caching, id assignment,
grouping, sorting, serialising — is 29 ms. And parallelising the reads
across 8 threads had bought only 1.6x over the serial 14.7 s, which is
the signature of a BANDWIDTH wall, not a latency one: threads cannot help
when the bytes are the problem.
A FLAC keeps its cover art INSIDE the tag, so `Probe::read()` was pulling
multiple megabytes of picture data per file across the network in order
to recover a title, an artist and a track number. Those pictures were
then dropped on the floor: the cover shown for a block is resolved
separately, once per ALBUM, by `extract_artwork` / `find_folder_artwork`
— 13 reads out of 247 in this box.
`ParseOptions::read_cover_art(false)` on the two paths that only ever
wanted metadata (`extract_with_roots`, `extract_properties`).
`read_properties` stays ON: duration, bit depth and sample rate come from
the header and cost nothing. `extract_artwork` and `extract_artwork_bytes`
— the two functions that genuinely want the picture — are untouched.
MEASURED ON THE SAME FOLDER, SAME NAS, AFTER THE CHANGE:
[ephemeral][perf] parallel tag reads: 922.9ms for 247 files
[ephemeral][perf] serial bookkeeping (artwork + ids): 66.5ms
9.268 s -> 0.923 s on the reads, and ~14.8 s -> 990 ms for the whole
open. The prediction written before the run was "under 2 s", so the
mechanism is confirmed rather than merely consistent.
Worth recording plainly: the parallel-reads commit before this one was
NOT the fix. It masked a bandwidth problem with threads and made the
number look better while the app still moved the same bytes — and it left
me believing the remainder was the NAS's ceiling. What refuted that was
the owner pointing out that fooyin opens the SAME folder from the SAME
NAS almost instantly. The fix is not reading what nobody asked for.
Shared crate, so this also reaches the library scanner — which wants the
same thing for the same reason. qbz-library: 103 tests green.
cc
vicrodh