feat(sync-ui): default auto-sync interval 60 minutes

docs-site/launcher-script.md

@@ -119,7 +119,7 @@ Unfinished sessions (a crash mid-playback) are skipped until the app finalizes t
 - **Activity** — live stage-by-stage progress, remote output, and a merge summary (sessions, words, kanji, rollups) when a run finishes. Runs can be cancelled, and guard failures offer a one-click `--force` retry.
 - **Snapshots** — create manual database snapshots (stored in `/tmp/subminer-db-snapshots/` by default), merge a snapshot file into the local database, or reveal/delete existing snapshots.
 
-Hosts with **Auto-sync** enabled are synced in the background on a configurable interval (default every 30 minutes) whenever no mpv session or stats server is using the database; results surface as overlay notifications. Host bookkeeping lives in `<config dir>/sync-hosts.json`.
+Hosts with **Auto-sync** enabled are synced in the background on a configurable interval (default every 60 minutes) whenever no mpv session or stats server is using the database; results surface as overlay notifications. Host bookkeeping lives in `<config dir>/sync-hosts.json`.
 
 ## Common Commands
 

src/shared/sync/sync-hosts-store.test.ts

@@ -27,7 +27,7 @@ function withTempDir(fn: (dir: string) => void): void {
 test('createDefaultSyncHostsState returns empty v1 state', () => {
   assert.deepEqual(createDefaultSyncHostsState(), {
     version: 1,
-    autoSyncIntervalMinutes: 30,
+    autoSyncIntervalMinutes: 60,
     hosts: [],
   });
 });

src/shared/sync/sync-hosts-store.ts

@@ -34,7 +34,7 @@ export interface SyncResultUpdate {
   detail: string | null;
 }
 
-const DEFAULT_AUTO_SYNC_INTERVAL_MINUTES = 30;
+const DEFAULT_AUTO_SYNC_INTERVAL_MINUTES = 60;
 
 export function createDefaultSyncHostsState(): SyncHostsState {
   return {