fix(arch-a2): deactivation cleanup - container services, search provider, hook deregistration, notification sync, task state, activation order

app/plugins/builtins/knowledge/plugin.py

@@ -149,8 +149,8 @@ class KnowledgePlugin(BasePlugin):
 
     async def on_deactivate(self, db, service_container, event_bus) -> None:
         """Clean up on deactivation."""
-        from app.core.hooks import unregister_actions_by_owner
-        unregister_actions_by_owner("knowledge")
+        from app.core.hooks import get_hook_registry
+        get_hook_registry().unregister_all_for_plugin("knowledge")
         # Unregister knowledge agent tools from the core AI tool registry
         try:
             from app.ai.tool_registry import get_tool_registry