fix(library-db): name slow-write ops for macOS stall diagnosis (#1043)

* fix(library-db): name slow-write ops for macOS stall diagnosis (#1040)

Replace generic op=misc labels on production library-db write paths with
stable module.action names (sync_state.*, track.*, tombstone.*, cmd.*, …)
so SLOW write logs pinpoint the call site. Document the naming convention
on LibraryStore::with_conn.

Diagnostic step for #1040 — no behaviour change.

* docs: add CHANGELOG and credits for PR #1043

Library-db slow-write op naming diagnostic for issue #1040.

src/config/settingsCredits.ts

@@ -157,6 +157,7 @@ const CONTRIBUTOR_ENTRIES = [
       'Themed startup splash before Vite loads — deferred window show, per-theme logo gradient (PR #1030)',
       'Artist page: Top Tracks play when album list is empty on the page (PR #1031)',
       'PsyLab Connections tab with server capability readout, Navidrome admin-role probe, and tab-bar layout fix; server-capability framework with AudioMuse detection via OpenSubsonic sonicSimilarity and sonic Instant Mix routing on Navidrome ≥0.62 (PR #1033)',
+      'Library DB: named slow-write op labels for macOS playback-stall diagnosis (PR #1043)',
     ],
   },
   {