diff --git a/CHANGELOG.md b/CHANGELOG.md
index a4a95832f..e56e3277e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [1.91.37.0] - 2026-10-07
+## [1.91.39.0] - 2026-10-07
 
 ### Added
 - Choose separate model tiers for planning and implementation. Independent plan reviews default to Fable 5.1 or GPT-6 Astra; implementation handoffs recommend Opus 5.5 or GPT-6.1 Sol without switching your session. Explicit model choices still win, and `plan_review_tier smart` or `host` provides an alternative to the frontier default.
diff --git a/VERSION b/VERSION
index b866b816f..a93bd3efa 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.91.37.0
+1.91.39.0
diff --git a/agents-digest/gstack-AGENTS.md b/agents-digest/gstack-AGENTS.md
index dc887b150..277279533 100644
--- a/agents-digest/gstack-AGENTS.md
+++ b/agents-digest/gstack-AGENTS.md
@@ -1,4 +1,4 @@
-# gstack digest v1.91.37.0 — regenerate/re-copy after upgrading gstack
+# gstack digest v1.91.39.0 — regenerate/re-copy after upgrading gstack
 
 Behavioral rules from gstack (https://github.com/garrytan/gstack), compressed
 for agent hosts without a full skill install. The full skills add workflows,
diff --git a/package.json b/package.json
index e730c6b91..94e32ab88 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gstack",
-  "version": "1.91.37",
+  "version": "1.91.39",
   "description": "Garry's Stack — Claude Code skills + fast headless browser. One repo, one install, entire AI engineering workflow.",
   "license": "MIT",
   "type": "module",
diff --git a/test/pty-output-wake.test.ts b/test/pty-output-wake.test.ts
index a5f1e7c94..17675a21e 100644
--- a/test/pty-output-wake.test.ts
+++ b/test/pty-output-wake.test.ts
@@ -58,17 +58,29 @@ process.stdout.write('TERMINAL_READY');
 `, { mode: 0o755 });
   const originalBinary = process.env.BROWSE_TERMINAL_BINARY;
   let session: ClaudePtySession | undefined;
+  let terminal: Bun.Terminal | undefined;
+  const spawn = Bun.spawn;
+  const spawnSpy = spyOn(Bun, 'spawn').mockImplementation(((...args: any[]) => {
+    const child = (spawn as any)(...args);
+    if (args[1]?.cwd === dir && args[1]?.terminal) terminal = child.terminal;
+    return child;
+  }) as typeof Bun.spawn);
   try {
     process.env.BROWSE_TERMINAL_BINARY = fake;
     session = await launchClaudePty({ cwd: dir, model: 'fixture', timeoutMs: 5000, sessionLedger: false });
     await session.waitFor('TERMINAL_READY', { timeoutMs: 3000 });
+    expect(terminal?.closed).toBe(false);
     expect(descriptors().length).toBeGreaterThan(before.length);
     await session.close();
     expect(session.exited()).toBe(true);
+    expect(terminal?.closed).toBe(true);
+    const settledBy = performance.now() + 1000;
+    while (JSON.stringify(descriptors()) !== JSON.stringify(before) && performance.now() < settledBy) await Bun.sleep(10);
     expect(descriptors()).toEqual(before);
   } finally {
     try { await session?.close(); }
     finally {
+      spawnSpy.mockRestore();
       if (originalBinary === undefined) delete process.env.BROWSE_TERMINAL_BINARY;
       else process.env.BROWSE_TERMINAL_BINARY = originalBinary;
       fs.rmSync(dir, { recursive: true, force: true });