codex

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Dmitriy Kovalenko 33a0f766a6 Reclaim unused SQLite log database pages in the background (#49069 )

## Why

Deleting logs leaves free SQLite pages available for reuse without shrinking the database file. Reclaim excess free space while preserving a reserve for future writes.

## What changed

- Start a background incremental-vacuum worker with `StateRuntime`, enabling reclamation only for the logs database. Use a per-home file lock to select one worker and wait for it to finish during shutdown.
- Reclaim pages when at least 64 MiB and 25% of the database are free, preserving a reserve of at least 16 MiB or 10% of the database.
- Use short transactions with page and cooperative time budgets, defer work on contention, and reduce batch sizes with exponential backoff when interrupted passes make no progress.
- Record reclamation counts, durations, and reclaimed pages in telemetry.

## Testing

Add a regression test that interrupts a vacuum commit, verifies foreground writes can resume without data loss, then confirms a resumed pass shrinks the database and passes `PRAGMA integrity_check`.

GitOrigin-RevId: 8421f87b0aeef6540eda5690c84216906673c72e

2026-09-28 20:19:10 +00:00

goals_migrations

Preserve thread context when retrying or editing turns (#33211 )

2026-07-15 02:35:49 +00:00

logs_migrations

Align SQLite feedback logs with feedback formatter (#13494 )

2026-03-18 22:44:31 +00:00

memory_migrations

Add memory dual writing and v2 readiness reporting (#43827 )

2026-09-08 14:23:23 +00:00

migrations

Keep archived threads with empty previews visible in listings (#48199 )