fix(worktree): address PR review — test assertion, dry-run sentinel, git timeouts

- Update allProjects test expectation to match [parent, composite] (matches JSDoc + callers in ContextBuilder/context handlers).
- Replace string-matched __DRY_RUN_ROLLBACK__ sentinel with dedicated DryRunRollback class to avoid swallowing unrelated errors.
- Add 5000ms timeout to spawnSync git calls in WorktreeAdoption and ProcessManager so worker startup can't hang on a stuck git process.
- Drop unreachable break after process.exit(0) in adopt case.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/services/infrastructure/ProcessManager.ts

@@ -685,7 +685,10 @@ type CwdClassification =
   | { kind: 'skip' };
 
 function gitQuery(cwd: string, args: string[]): string | null {
-  const r = spawnSync('git', ['-C', cwd, ...args], { encoding: 'utf8' });
+  const r = spawnSync('git', ['-C', cwd, ...args], {
+    encoding: 'utf8',
+    timeout: 5000
+  });
   if (r.status !== 0) return null;
   return (r.stdout ?? '').trim();
 }

src/services/infrastructure/WorktreeAdoption.ts

@@ -48,8 +48,20 @@ interface WorktreeEntry {
   branch: string | null;
 }
 
+const GIT_TIMEOUT_MS = 5000;
+
+class DryRunRollback extends Error {
+  constructor() {
+    super('dry-run rollback');
+    this.name = 'DryRunRollback';
+  }
+}
+
 function gitCapture(cwd: string, args: string[]): string | null {
-  const r = spawnSync('git', ['-C', cwd, ...args], { encoding: 'utf8' });
+  const r = spawnSync('git', ['-C', cwd, ...args], {
+    encoding: 'utf8',
+    timeout: GIT_TIMEOUT_MS
+  });
   if (r.status !== 0) return null;
   return (r.stdout ?? '').trim();
 }
@@ -221,16 +233,15 @@ export async function adoptMergedWorktrees(opts: {
         }
       }
       if (dryRun) {
-        // Throw to force rollback. Sentinel caught below.
-        throw new Error('__DRY_RUN_ROLLBACK__');
+        // Throw a dedicated error to force rollback. Caught below by instanceof check.
+        throw new DryRunRollback();
       }
     });
 
     try {
       tx();
     } catch (err) {
-      const message = err instanceof Error ? err.message : String(err);
-      if (message === '__DRY_RUN_ROLLBACK__') {
+      if (err instanceof DryRunRollback) {
         // Rolled back as intended for dry-run — counts are still useful.
       } else {
         throw err;

src/services/worker-service.ts

@@ -1235,7 +1235,6 @@ async function main() {
         console.log(`  ! ${err.worktree}: ${err.error}`);
       }
       process.exit(0);
-      break;
     }
 
     case '--daemon':

tests/utils/project-name.test.ts

@@ -130,7 +130,7 @@ describe('getProjectContext', () => {
       expect(ctx.isWorktree).toBe(true);
       expect(ctx.primary).toBe('main-repo/my-worktree');
       expect(ctx.parent).toBe('main-repo');
-      expect(ctx.allProjects).toEqual(['main-repo/my-worktree']);
+      expect(ctx.allProjects).toEqual(['main-repo', 'main-repo/my-worktree']);
     });
 
     it('write-path call sites resolve to composite name in worktrees', () => {