feat: add schema versioning table and improve migration logic
- Introduced 'internal_metadata' table to track database version.
- Updated migrate_025_to_030 to use 'internal_metadata' presence as a version indicator.
- Updated 03_database_specification.md with the new table.
- Recorded in journal 20260223-0019.
1 parent 4cb3078 commit 4f6026bb930100ec484fc39edfa3d56b0ce1b5ef
@楽曲作りまくりおじさん 楽曲作りまくりおじさん authored 18 hours ago
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docs/specification/03_database_specification.md
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journals/20260223-0019-スキーマバージョン管理テーブルの追加.md 0 → 100644
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src/backend/src/db.rs