MechaCat02 c6bb9160e3 fix(crawler): scope chapter_sources lookup per-manga (0.35.5) ...

chapter_sources's PRIMARY KEY was (source_id, source_chapter_key) and
the lookup in sync_manga_chapters didn't constrain by manga_id, so a
source whose chapter slugs aren't globally unique (e.g. "chapter-1"
appearing under multiple mangas) silently attributed every collision
to the first manga that synced it. The INSERT path would have
conflicted on the second manga's sync.

Migration 0017 drops the old PK and rekeys on (source_id, chapter_id)
— the natural identity of a per-source chapter attachment — and adds
an index on (source_id, source_chapter_key) for the lookup path. The
repo lookup now joins chapters and filters by manga_id; the UPDATE
path keys on chapter_id directly (the row's natural identifier
post-migration).

Test sync_chapters_isolates_colliding_keys_across_mangas pins the
contract end-to-end.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-29 20:43:08 +02:00

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