fix(hooks,test): harden background rewake, fix hook timeout units, stabilize CI teardown

Follow-ups from the PR #175/#176 reviews:

- Rewake helper self-terminates on its own 6h deadline and when orphaned,
  instead of relying on Claude Code to reap the poller
- Rewake marker versioned (V2) with a version-agnostic ownership prefix, so
  future script updates replace older handlers instead of duplicating them;
  regression test covers the V1 to V2 swap
- HOOK_TIMEOUT_MS renamed to HOOK_TIMEOUT_SECONDS = 10: the hook timeout
  field is seconds (the CLI multiplies by 1000), so the curl hooks have
  effectively had a ~2.8h timeout since COD-54
- Test echo PTY switches to raw mode: each input byte echoes exactly once
  (tty line discipline doubled every line and buffered until Enter)
- test/setup.ts: drain in-flight console-log rpc forwards before environment
  teardown (fixes the EnvironmentTeardownError that failed CI twice on the
  merge commit with all 3820 tests passing), clean the temp home on process
  exit (fully-skipped files leaked it), fix the Windows Playwright cache
  fallback path
- test/webview-proxy.test.ts: stop naming the vitest environment directive in
  prose; vitest matches it inside comments and silently ran the whole file
  under the jsdom environment while the comment claimed node
- CLAUDE.md: document the temp-HOME and echo-PTY test isolation

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

test/hooks-config.test.ts

@@ -95,10 +95,10 @@ describe('generateHooksConfig', () => {
     expect(notifHooks[0].hooks[0].command).toContain('|| true');
   });
 
-  it('should set timeout to 10000ms', () => {
+  it('should set timeout to 10 seconds (hook timeout fields are seconds)', () => {
     const config = generateHooksConfig();
     const notifHooks = config.hooks.Notification as Array<{ hooks: Array<{ timeout: number }> }>;
-    expect(notifHooks[0].hooks[0].timeout).toBe(10000);
+    expect(notifHooks[0].hooks[0].timeout).toBe(10);
   });
 
   it('should include correct event names in curl payloads', () => {
@@ -199,7 +199,40 @@ describe('writeHooksConfig', () => {
 
     const parsed = JSON.parse(readFileSync(settingsPath, 'utf-8'));
     expect(parsed.hooks.PostToolUse).toHaveLength(1);
-    expect(JSON.stringify(parsed.hooks.PostToolUse)).toContain('CODEMAN_BACKGROUND_REWAKE_V1');
+    expect(JSON.stringify(parsed.hooks.PostToolUse)).toContain('CODEMAN_BACKGROUND_REWAKE_V');
+  });
+
+  it('should replace an older rewake script version without duplicating it', async () => {
+    const claudeDir = join(testDir, '.claude');
+    const settingsPath = join(claudeDir, 'settings.local.json');
+    mkdirSync(claudeDir, { recursive: true });
+    // Simulate a case healed by the previous release: current curls (secret present)
+    // plus a V1 rewake handler. The version bump must swap the handler in place.
+    const hooks = generateHooksConfig().hooks;
+    hooks.PostToolUse = [
+      {
+        matcher: 'Bash',
+        hooks: [
+          {
+            type: 'command',
+            command: 'node',
+            args: ['-e', 'const CODEMAN_BACKGROUND_REWAKE_V1 = true; process.exit(0);'],
+            asyncRewake: true,
+            timeout: 21600,
+          },
+        ],
+      },
+    ];
+    writeFileSync(settingsPath, JSON.stringify({ hooks }, null, 2));
+
+    await refreshStaleCodemanHooks(testDir);
+
+    const parsed = JSON.parse(readFileSync(settingsPath, 'utf-8'));
+    const serialized = JSON.stringify(parsed.hooks.PostToolUse);
+    expect(parsed.hooks.PostToolUse).toHaveLength(1);
+    expect(parsed.hooks.PostToolUse[0].hooks).toHaveLength(1);
+    expect(serialized).toContain('CODEMAN_BACKGROUND_REWAKE_V2');
+    expect(serialized).not.toContain('CODEMAN_BACKGROUND_REWAKE_V1');
   });
 
   it('should not add rewake hooks to a user-owned hook configuration', async () => {
@@ -841,7 +874,7 @@ describe('Hook Config Generation - Extended', () => {
       expect(hook.matcher).toBeDefined();
       expect(hook.hooks).toHaveLength(1);
       expect(hook.hooks[0].type).toBe('command');
-      expect(hook.hooks[0].timeout).toBe(10000);
+      expect(hook.hooks[0].timeout).toBe(10);
       expect(hook.hooks[0].command).toBeTruthy();
     }
   });