chore(backend): standardize multiline formatting across modules

Reformatted multiline function calls, object definitions, and queries for improved code readability and consistency. Adjusted imports and constraints where necessary.

backend/app/api/routes/agents.py

@@ -57,8 +57,18 @@ RATE_MULTIPLIER = 100 if IS_TEST else 1
 # Valid status transitions for agent lifecycle management
 VALID_STATUS_TRANSITIONS: dict[AgentStatus, set[AgentStatus]] = {
     AgentStatus.IDLE: {AgentStatus.WORKING, AgentStatus.PAUSED, AgentStatus.TERMINATED},
-    AgentStatus.WORKING: {AgentStatus.IDLE, AgentStatus.WAITING, AgentStatus.PAUSED, AgentStatus.TERMINATED},
-    AgentStatus.WAITING: {AgentStatus.IDLE, AgentStatus.WORKING, AgentStatus.PAUSED, AgentStatus.TERMINATED},
+    AgentStatus.WORKING: {
+        AgentStatus.IDLE,
+        AgentStatus.WAITING,
+        AgentStatus.PAUSED,
+        AgentStatus.TERMINATED,
+    },
+    AgentStatus.WAITING: {
+        AgentStatus.IDLE,
+        AgentStatus.WORKING,
+        AgentStatus.PAUSED,
+        AgentStatus.TERMINATED,
+    },
     AgentStatus.PAUSED: {AgentStatus.IDLE, AgentStatus.TERMINATED},
     AgentStatus.TERMINATED: set(),  # Terminal state, no transitions allowed
 }
@@ -870,9 +880,7 @@ async def terminate_agent(
         agent_name = agent.name
 
         # Terminate the agent
-        terminated_agent = await agent_instance_crud.terminate(
-            db, instance_id=agent_id
-        )
+        terminated_agent = await agent_instance_crud.terminate(db, instance_id=agent_id)
 
         if not terminated_agent:
             raise NotFoundError(
@@ -881,8 +889,7 @@ async def terminate_agent(
             )
 
         logger.info(
-            f"User {current_user.email} terminated agent {agent_name} "
-            f"(id={agent_id})"
+            f"User {current_user.email} terminated agent {agent_name} (id={agent_id})"
         )
 
         return MessageResponse(