fix(#355): Plugin-Lifecycle Runtime-Registrierungen repariert — Vorher-Status wird jetzt VOR dem registry-Aufruf gelesen (war konstant falsch → Deactivate-Cleanup toter Code); sync_notification_types hinter DB-Statusupdate verschoben; echter Integrationstest tests/test_plugin_lifecycle_service.py (install→activate×2→deactivate×2→re-activate über PluginService) rot→grün

fixes #355

app/plugins/registry.py

@@ -635,15 +635,17 @@ class PluginRegistry:
         # Activation status is enforced per-request via require_active_plugin().
         # No dynamic route registration here — prevents duplicate routes.
 
-        # Sync notification types from this plugin
-        await self.sync_notification_types(db)
-
-        # Update DB record
+        # Update DB record FIRST — sync_notification_types() only picks up types
+        # from plugins whose record is already active; running it before the
+        # status update silently skipped the freshly activated plugin's types.
         record.status = "active"
         record.active = True
         await db.flush()
         self._db_status[name] = record
 
+        # Sync notification types from this plugin (AFTER status update)
+        await self.sync_notification_types(db)
+
         # Invalidate Redis cache for this plugin across all tenants
         try:
             from app.core.redis import get_redis