feat: add auto-import toggle to restore latest backup after rclone pull

Adds autoImportEnabled/autoImportHour to rclone config. A separate
hourly cron finds the latest .zip in backups/ and restores it to the
database (drop schema, psql restore, apply migrations). Frontend shows
toggle + time picker + Import Now button in the Receiver PC section.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/Backend/src/services/rcloneConfigService.ts

@@ -19,6 +19,13 @@ export interface RcloneConfig {
   lastSyncAt: string | null;
   lastSyncStatus: string | null;
   lastSyncError: string | null;
+
+  // Auto-import: restore latest backup after rclone pull
+  autoImportEnabled: boolean;
+  autoImportHour: number;
+  lastImportAt: string | null;
+  lastImportStatus: string | null;
+  lastImportError: string | null;
 }
 
 const DEFAULT_CONFIG: RcloneConfig = {
@@ -31,6 +38,11 @@ const DEFAULT_CONFIG: RcloneConfig = {
   lastSyncAt: null,
   lastSyncStatus: null,
   lastSyncError: null,
+  autoImportEnabled: false,
+  autoImportHour: 22,
+  lastImportAt: null,
+  lastImportStatus: null,
+  lastImportError: null,
 };
 
 export function readRcloneConfig(): RcloneConfig {