feat: punkt 6 (backup) — ARQ cron job, backup config in settings, backup-now trigger, backup history, migration 0130

app/core/worker.py

@@ -236,7 +236,7 @@ def _lazy_register_plugin_jobs() -> None:
     if not registry.list_discovered():
         registry.discover_builtins()
 
-    job_modules: list[str] = ["app.core.jobs", "app.services.import_export_jobs"]
+    job_modules: list[str] = ["app.core.jobs", "app.core.backup_job", "app.services.import_export_jobs"]
     for plugin_name in registry.list_discovered():
         plugin = registry.get_plugin(plugin_name)
         if plugin is None:
@@ -371,4 +371,9 @@ class WorkerSettings:
             _wrap_cron_with_lock("cleanup_outbox", cleanup_outbox_job, ttl_seconds=300),
             minute=0,
         ),
+        # Scheduled backup — daily at 02:00 (guarded by distributed lock)
+        cron(
+            _wrap_cron_with_lock("run_backup", get_job("run_backup"), ttl_seconds=600),
+            hour=2, minute=0,
+        ),
     ]