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]/route.ts

@@ -42,7 +42,7 @@ export async function GET(
        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
+       WHERE s.id = $1::uuid AND s.project_id = $2::uuid AND u.data->>'email' = $3
        LIMIT 1`,
       [sessionId, projectId, session.user.email]
     );
@@ -110,7 +110,7 @@ export async function PATCH(
 
     values.push(sessionId);
     await query(
-      `UPDATE agent_sessions SET ${updates.join(", ")} WHERE id = $${idx}`,
+      `UPDATE agent_sessions SET ${updates.join(", ")} WHERE id = $${idx}::uuid`,
       values
     );