chore: address review feedback - log cleanup errors, add inline comment

packages/cli/src/acp-integration/acpAgent.ts

@@ -112,7 +112,9 @@ export async function runAcpAgent(
     // Without this, orphan subprocesses keep the Node.js event loop alive
     // and the CLI process never terminates after the IDE disconnects.
     runExitCleanup()
-      .catch(() => {})
+      .catch((err) => {
+        debugLogger.error('[ACP] Cleanup error:', err);
+      })
       .finally(() => {
         process.exit(0);
       });

packages/cli/src/gemini.tsx

@@ -409,6 +409,7 @@ export async function main() {
 
     if (config.getExperimentalZedIntegration()) {
       await runAcpAgent(config, settings, argv);
+      // Clean up child processes and force exit, matching other non-interactive modes
       await runExitCleanup();
       process.exit(0);
     }