fix(arch-043): repair indentation of cron job registration guard

app/plugins/builtins/automation/plugin.py

@@ -248,7 +248,7 @@ class AutomationPlugin(BasePlugin):
             from sqlalchemy import select as sa_select
 
             # Get first tenant + admin user for seeding
-            from app.models.user import User, UserTenant
+            from app.models.user import User
             from app.models.tenant import Tenant
             tenant_result = await db.execute(sa_select(Tenant).limit(1))
             tenant = tenant_result.scalar_one_or_none()
@@ -388,8 +388,9 @@ class AutomationPlugin(BasePlugin):
                     logger.exception("Failed to register contributed automation '%s' from plugin '%s'", prefixed_name, plugin_name)
         self._contributed_automations[plugin_name] = automation_names
 
-        # Register cron jobs
+        # Register cron jobs (skip if no tenant exists yet)
         cron_job_names: list[str] = []
+        if default_tenant_id is not None:
             for cron_def in manifest.cron_jobs:
                 prefixed_name = f"{plugin_name}.{cron_def.name}"
                 cron_job_names.append(prefixed_name)