fix: add ::uuid casts to all agent_sessions queries

PostgreSQL can't implicitly coerce text params to UUID columns.
Add explicit ::uuid casts on id and project_id in all agent session
routes (list, get, patch, stop, approve).

Made-with: Cursor

app/api/projects/[projectId]/agent/sessions/[sessionId]/stop/route.ts

@@ -21,7 +21,7 @@ export async function POST(
       `SELECT s.status FROM agent_sessions s
        JOIN fs_projects p ON p.id = s.project_id
        JOIN fs_users u ON u.id = p.user_id
-       WHERE s.id = $1 AND s.project_id = $2 AND u.data->>'email' = $3 LIMIT 1`,
+       WHERE s.id = $1::uuid AND s.project_id = $2::uuid AND u.data->>'email' = $3 LIMIT 1`,
       [sessionId, projectId, session.user.email]
     );
 
@@ -45,7 +45,7 @@ export async function POST(
       `UPDATE agent_sessions
        SET status = 'stopped', completed_at = now(), updated_at = now(),
            output = output || '[{"ts": "now", "type": "info", "text": "Stopped by user."}]'::jsonb
-       WHERE id = $1`,
+       WHERE id = $1::uuid`,
       [sessionId]
     );