wip: add tools to agent control and improve tool class

backend/src/app.py

@@ -41,6 +41,9 @@ class App(ChatMixin):
             agents_mod.ExpertAgent,
         ]
 
+        from features.calc import Calc
+        self.tool_classes = [Calc]
+
     # --- Connection Management (Synchronous) ---
 
     def on_event(self, callback):
@@ -231,12 +234,13 @@ class App(ChatMixin):
 
     async def get_agent_control(self, agent_id):
         agent = await self.get_agent(agent_id)
+        resources = await self.get_agent_resources(agent_id)
 
         agent_class = next((kind for kind in self.agent_classes if kind.identifier == agent.kind), None)
         if agent_class is None:
             raise Exception(f"invalid agent kind: {agent.kind}")
 
-        control = agent_class(self, agent.data)
+        control = agent_class(self, agent.data, resources)
         control._set_basic_info(agent_id, agent.name, agent.user_id)
         return control