Make SQLite schema upgrades transactional - #106
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OskarEichler wants to merge 1 commit into
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Run the complete SQLite schema upgrade inside one transaction. A failure during v4 to v5 currently leaves user_version advanced, an old table, and an empty replacement; the transaction preserves the original v4 database and allows a clean retry to v7.
Verification: injected-failure rollback and retry model passes; full suite 144 tests / 2,870 assertions, zero failures/errors. Source-only patch; no tests included.