2281f2e764d74b6812ea0d4e79ea22ffdb78255e
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Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
  timothyandClaude Opus 4.8
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2281f2e764 |
fix(308): idempotent concurrent Add*ToCollection instead of a composite-PK 500
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Two concurrent adds of the same item both membership-check it absent, both insert the CollectionItem composite key, and the loser's SaveChangesForcingVersion threw an uncaught DbUpdateException (SQLite 19 / MySQL 1062) -> 500. Now the loser is an idempotent no-op. - ConcurrencyExtensions.TrySaveChangesForcingVersion: bool-returning sibling that catches only a classified unique/PK violation and returns false. - 10 single-item Add*ToCollection handlers: return Unit.Default (no-op, skip fan-out) on false — the racing winner already inserted + rotated + rebuilt. - Bulk AddItemsToCollection: retry on a fresh context against recomputed membership so a partial-overlap collision doesn't drop the non-colliding items (bounded loop; common no-collision path runs once). - Provider detection via a TvContext.IsUniqueConstraintViolation static delegate (matches the existing IsSqlite/LastInsertedRowId provider seam), wired from Startup to SqliteErrorClassifier / MySqlErrorClassifier. - Add*ToPlaylist is NOT affected (PlaylistItem has its own identity PK; a playlist may legitimately contain the same item more than once). Tests: a negative-control anchor proves the race genuinely throws a classified exception; end-to-end handler tests reproduce a real cross-connection race via a shared-cache SQLite harness + a SavingChanges interceptor (the single-conn in-memory fixture cannot). Every fix-dependent test verified to fail with the catch disabled. Docs: api-conventions.md §7a (idempotent insert under concurrency) + decisions/optimistic-concurrency.md. fixes #308 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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timothyandClaude Opus 4.8
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a2c056dd7a |
docs(release): prepare v26.9.0 promotion [decisions-edit]
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Consolidate docs/decisions.md (1923 -> 1028) by extracting four cohesive topic clusters into docs/decisions/ (optimistic-concurrency, api-auth-security, release-ci-governance, spa-modularization) — content relocated verbatim (lossless; all rationale + reversals preserved), main Index rebuilt to reference the topic files plus the remaining in-file entries, docs/README.md points back at the decisions Index. Add the v26.9.0 row to the ci-cd.md version table. refs #340 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |