feat: Serverless Functions as AI Tools (#16919)

## Summary

This PR enables serverless functions to be exposed as AI tools, allowing
them to be used by AI agents.

### Changes

- Added new `SERVERLESS_FUNCTION` tool category
- Added `toolDescription`, `toolInputSchema`, and `toolOutputSchema`
fields to serverless functions
- Created database migration for the new schema columns
- Added tool index query and resolver for fetching available tools
- Added Settings AI page tabs (Skills, Tools, Settings) with new tools
table
- Added utility to convert tool schema to JSON schema format
- Updated frontend to display tools in the settings page

### Implementation Details

- Serverless functions can now define tool metadata (description,
input/output schemas)
- These functions are automatically registered in the tool registry
- The tool index endpoint allows querying available tools with their
schemas
- Settings page now has a dedicated Tools tab showing all available
tools

packages/twenty-front/src/modules/workflow/workflow-steps/workflow-actions/ai-agent-action/hooks/useWorkflowAiAgentPermissionActions.ts

@@ -116,7 +116,13 @@ export const useWorkflowAiAgentPermissionActions = ({
       },
     });
 
-    await refetchAgentAndRoles();
+    const { refetchedAgent } = await refetchAgentAndRoles();
+
+    // Update Recoil state with the refetched agent to ensure roleId is available
+    // Apollo's onCompleted is not called on refetch, so we need to update manually
+    if (isDefined(refetchedAgent)) {
+      setWorkflowAiAgentActionAgent(refetchedAgent);
+    }
 
     return generatedRoleId;
   };
@@ -294,7 +300,6 @@ export const useWorkflowAiAgentPermissionActions = ({
       return;
     }
 
-    const hadRoleBefore = isDefined(roleId);
     const ensuredRoleId = await ensureRoleId();
 
     if (!ensuredRoleId || permissionFlagKeys.includes(permissionFlagKey)) {
@@ -310,14 +315,7 @@ export const useWorkflowAiAgentPermissionActions = ({
       },
     });
 
-    const { refetchedAgent } = await refetchAgentAndRoles();
-    if (
-      !hadRoleBefore &&
-      isDefined(refetchedAgent) &&
-      isDefined(setWorkflowAiAgentActionAgent)
-    ) {
-      setWorkflowAiAgentActionAgent(refetchedAgent);
-    }
+    await refetchAgentAndRoles();
     setWorkflowAiAgentPermissionsIsAddingPermission(false);
     setWorkflowAiAgentPermissionsSelectedObjectId(undefined);
   };