feat(rule13): 执行前分歧重评估闸——main 撞声明范围→needs_attention 重评估

通用规则13的(B)半边：sync main 之前先跑 reevalScopeGate，
以 git diff HEAD...origin/main 取 main 自分支点以来改动的文件，
与任务 scopeFiles 求交集；非空即 emit needs-reeval →
daemon markReeval 直接转 needs_attention（不重试/不计失败/run收尾cancelled）。

- checks.ts: + reevalScopeGate / ReevalGateFn / ReevalGateResult
- pipeline.ts: createWorktree 后、syncMain 前插入重评估闸 + reevalGate 依赖注入
- protocol.ts: + needs-reeval OutboxRecord/Payload 事件
- ingest.ts: + case 'needs-reeval' → store.markReeval
- store.ts: + markReeval（executing→needs_attention，不进重试链）
- status.ts: executing 合法转移 + needs_attention
- 测试 +5：reevalScopeGate(命中/未命中/空/无前移/git错) · pipeline(命中emit/未命中续跑) · store.markReeval；全套 242 绿
- docs: optimization-plan.html 规则13 标 ✅ 已实现

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

test/checks.test.ts

@@ -4,7 +4,7 @@ import { mkdtempSync, rmSync, writeFileSync } from 'node:fs';
 import { tmpdir } from 'node:os';
 import { join } from 'node:path';
 import { execFileSync } from 'node:child_process';
-import { parseChecks, runChecks, diffSizeGate, globToRegExp, matchesAnyGlob, scopeFileGate } from '../src/executor/checks.js';
+import { parseChecks, runChecks, diffSizeGate, globToRegExp, matchesAnyGlob, scopeFileGate, reevalScopeGate } from '../src/executor/checks.js';
 import type { Project } from '../src/model/types.js';
 
 function withTmpData(cb: (dir: string) => Promise<void> | void): Promise<void> | void {
@@ -145,3 +145,55 @@ test('scopeFileGate：git 出错 → 不拦截', async () => {
   const r = await scopeFileGate('/nonexistent-repo-xyz', 'a', 'b', ['src/**']);
   assert.equal(r.ok, true);
 });
+
+test('reevalScopeGate（规则13）：main 动了声明范围内文件 → overlap 非空；范围外 → 空；空声明 → 空', async () => {
+  const repo = mkdtempSync(join(tmpdir(), 'maestro-reeval-'));
+  const g = (args: string[]) => execFileSync('git', args, { cwd: repo }).toString();
+  g(['init', '-q', '-b', 'main']);
+  g(['config', 'user.email', 't@t']); g(['config', 'user.name', 't']);
+  execFileSync('mkdir', ['-p', join(repo, 'src')]);
+  writeFileSync(join(repo, 'src', 'a.ts'), 'a\n');
+  writeFileSync(join(repo, 'docs.md'), 'd\n');
+  g(['add', '-A']); g(['commit', '-qm', 'base']);
+  // 任务分支从此刻 main 切出（尚无任务提交，模拟 sync 前的 worktree HEAD）
+  g(['checkout', '-q', '-b', 'feature']);
+  // main 在任务排队期间前移：改了 src/a.ts（声明范围内）
+  g(['checkout', '-q', 'main']);
+  writeFileSync(join(repo, 'src', 'a.ts'), 'a changed by main\n');
+  g(['add', '-A']); g(['commit', '-qm', 'main moved']);
+  g(['checkout', '-q', 'feature']);   // worktree HEAD 回到分支点
+
+  try {
+    // 声明 src/**，main 动了 src/a.ts → 撞上，触发重评估
+    const hit = await reevalScopeGate(repo, 'main', ['src/**']);
+    assert.deepEqual(hit.overlap, ['src/a.ts']);
+
+    // 声明 docs.md，main 只动了 src/a.ts → 不撞，不触发
+    const miss = await reevalScopeGate(repo, 'main', ['docs.md']);
+    assert.deepEqual(miss.overlap, []);
+
+    // 空声明 → 不评估
+    const skip = await reevalScopeGate(repo, 'main', []);
+    assert.deepEqual(skip.overlap, []);
+  } finally {
+    rmSync(repo, { recursive: true, force: true });
+  }
+});
+
+test('reevalScopeGate（规则13）：main 无前移 → 空 overlap；git 出错 → 空', async () => {
+  const repo = mkdtempSync(join(tmpdir(), 'maestro-reeval2-'));
+  const g = (args: string[]) => execFileSync('git', args, { cwd: repo }).toString();
+  g(['init', '-q', '-b', 'main']);
+  g(['config', 'user.email', 't@t']); g(['config', 'user.name', 't']);
+  writeFileSync(join(repo, 'src.ts'), 'x\n');
+  g(['add', '-A']); g(['commit', '-qm', 'base']);
+  g(['checkout', '-q', '-b', 'feature']);   // 分支点 = main tip，main 未前移
+  try {
+    const r = await reevalScopeGate(repo, 'main', ['**']);
+    assert.deepEqual(r.overlap, []);
+  } finally {
+    rmSync(repo, { recursive: true, force: true });
+  }
+  const err = await reevalScopeGate('/nonexistent-repo-xyz', 'main', ['src/**']);
+  assert.deepEqual(err.overlap, []);
+});