school_compare/backend/migration.py at d1d994c1a254902a2c19cbdad19acf54a592fa5f

tudor/school_compare

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fix(startup): stop re-migrating on every container restart

Two issues caused the backend to drop and reimport school data on restart:

1. schema_version table was in the drop list inside run_full_migration(),
   so after any migration the breadcrumb was destroyed and the next
   restart would see no version → re-trigger migration
2. Schema version was set after migration, so a crash mid-migration
   left no version → infinite re-migration loop

Fix: remove schema_version from the drop list, and set the version
before running migration so crashes don't cause loops.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-25 10:57:01 +00:00

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