fix: make worktree cleanup fail closed (#3385)

* fix: make worktree cleanup fail closed

* chore: add changeset for worktree cleanup safety

* fix: address worktree cleanup review findings

* docs: label remove-workspace failure block

* fix: initialize worktree manifest before dispatch

sdk/src/query/worktree.ts

@@ -0,0 +1,39 @@
+import { spawnSync } from 'node:child_process';
+import { resolveGsdToolsPath } from '../sdk-package-compatibility.js';
+import type { QueryHandler } from './utils.js';
+
+export const worktreeCleanupWave: QueryHandler = async (args, projectDir) => {
+  const toolsPath = resolveGsdToolsPath(projectDir);
+  const result = spawnSync(process.execPath, [toolsPath, 'worktree', 'cleanup-wave', ...args], {
+    cwd: projectDir,
+    encoding: 'utf-8',
+    stdio: ['pipe', 'pipe', 'pipe'],
+    timeout: 30000,
+    maxBuffer: 1024 * 1024,
+    env: {
+      ...process.env,
+      GIT_TERMINAL_PROMPT: '0',
+      GCM_INTERACTIVE: 'never',
+    },
+  });
+
+  if (result.error) {
+    return { data: { ok: false, reason: result.error.message || 'gsd-tools invocation failed' } };
+  }
+
+  const stdout = (result.stdout || '').trim();
+  if (stdout) {
+    try {
+      return { data: JSON.parse(stdout) };
+    } catch {
+      return { data: { ok: result.status === 0, reason: stdout } };
+    }
+  }
+
+  return {
+    data: {
+      ok: result.status === 0,
+      reason: result.stderr?.trim() || (result.status === 0 ? 'ok' : 'gsd-tools error'),
+    },
+  };
+};