Nightly DB snapshots to the 1TB storage box (live DB stays local)

The 'external drive' turned out to be a CIFS-mounted Hetzner storage
box — SQLite cannot run on a network mount (WAL shared memory and
locking break), and the live DB is only ~7MB anyway. So: the hot
database stays on the local volume, and a nightly VACUUM INTO snapshot
(transactionally consistent, a plain sequential file write — perfect
for CIFS) lands in /data/archive, which compose binds to the storage
box via HOST_ARCHIVE_DIR. 14-day retention, plus a snapshot at boot.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

server/src/ingest/scheduler.ts

@@ -4,7 +4,7 @@ import { fetchEspnScoreboard, fetchEspnSummary } from './espn';
 import { fetchEspnOdds } from './espnOdds';
 import { fetchFootballData } from '../footballData';
 import { fetchSofascore } from '../sofascore';
-import { setSourceMap, getSourceMap, setMatchExt, recordOdds, logIngest, prune } from '../db/db';
+import { setSourceMap, getSourceMap, setMatchExt, recordOdds, logIngest, prune, backupDb } from '../db/db';
 import type { Fixture } from '../../../src/lib/types';
 
 // The ingestion orchestrator. Replaces the old live loop: ESPN is the primary
@@ -161,13 +161,17 @@ export function startScheduler(
     oddsTimer = setTimeout(async () => { await oddsTick().catch(() => {}); scheduleOdds(); }, ODDS_MS);
   };
 
-  // Daily prune keeps the faster polling from growing kv_cache/ingest_log forever.
-  const pruneTimer = setInterval(() => {
+  // Daily housekeeping: prune keeps the faster polling from growing
+  // kv_cache/ingest_log forever; backupDb snapshots to the archive dir
+  // (the storage box in prod) so history survives anything.
+  const housekeeping = (): void => {
     try {
       const n = prune();
       if (n) console.log(`[db] pruned ${n} stale cache/log rows`);
     } catch { /* non-fatal */ }
-  }, 24 * 60 * 60 * 1000);
+    backupDb();
+  };
+  const pruneTimer = setInterval(housekeeping, 24 * 60 * 60 * 1000);
 
   const scheduleLive = (): void => {
     if (stopped) return;
@@ -189,6 +193,7 @@ export function startScheduler(
     scheduleLive();
     scheduleEnrich();
     scheduleOdds();
+    backupDb(); // boot snapshot — the daily timer covers the rest
   })();
 
   return () => {