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fix(stats): preserve session rollups across schema upgrades

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- Stop deleting imm_daily_rollups/imm_monthly_rollups on unrelated schema version bumps; their source session/telemetry rows may already be pruned, so deleted buckets could not be rebuilt
- Run startup session-rollup maintenance before the lexical rollup backfill takes the write lock, so recovery no longer races playback writes
- Update the vocabulary summary totals changelog fragment to reflect that watch-time, activity, efficiency, and library charts are no longer cleared during rebuilds
This commit is contained in:
sudacode
2026-08-18 01:12:58 -07:00
parent e9778a945a
commit db61ce358d
5 changed files with 126 additions and 9 deletions
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src/core/services/immersion-tracker/storage.ts
+3 -7
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@@ -1584,13 +1584,9 @@ export function ensureSchema(db: DatabaseSync): void {
ON imm_youtube_videos(youtube_video_id)
`);
if (currentVersion?.schema_version && currentVersion.schema_version < SCHEMA_VERSION) {
db.exec('DELETE FROM imm_daily_rollups');
db.exec('DELETE FROM imm_monthly_rollups');
db.exec(
`UPDATE imm_rollup_state SET state_value = 0 WHERE state_key = 'last_rollup_sample_ms'`,
);
}
// Session rollups intentionally outlive raw session and telemetry retention.
// Preserve them across unrelated schema upgrades because deleted historical
// buckets cannot be rebuilt after their source rows have been pruned.
db.exec(`
INSERT INTO imm_schema_version(schema_version, applied_at_ms)