feat(agent): 接通 plan 自动放行（autoApprovePlan）+ 项目配置可写

之前 auto_approve_plan/auto_approve_exec/checks 列与 Project 类型已存在，但
PatchProjectInput 不含它们 → 无法启用（dead config）。本次接通：
- PatchProjectInput + patchProject 支持 autoApprovePlan/autoApproveExec/checks
- API PATCH /projects 透传三字段
- ingest decompose-result：auto-approved + autoApprovePlan + 全 easy + 子任务≤5
  → store.decide(accept) 跳过 plan_review 直达 decomposed（默认关）

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

test/ingest.test.ts

@@ -255,6 +255,55 @@ test('ingest planner-decompose：setPlan + 建子任务 + 转 plan_review', () =
   });
 });
 
+test('autoApprovePlan：auto-approved + 开关 + 全 easy + 改动面小 → 跳过 plan_review 直接 decomposed', () => {
+  withTmpDataDir(() => {
+    const { store, taskId, runId } = setupPlanning('hard');
+    const pid = store.getTask(taskId)!.projectId;
+    store.patchProject(pid, { autoApprovePlan: true });
+    appendOutbox(runId, {
+      type: 'decompose-result', plan: '拆成两步',
+      subtasks: [{ title: 'a', complexity: 'easy' }, { title: 'b', complexity: 'easy' }],
+      transcriptRef: null, sessionId: null,
+    });
+    appendOutbox(runId, { type: 'done' });
+    ingestRun(store, noopLog, runId);
+    assert.equal(store.getTask(taskId)!.status, 'decomposed', '全 easy 自动放行');
+    store.close();
+  });
+});
+
+test('autoApprovePlan：开关关 → 仍走 plan_review 人审', () => {
+  withTmpDataDir(() => {
+    const { store, taskId, runId } = setupPlanning('hard');  // autoApprovePlan 默认 false
+    appendOutbox(runId, {
+      type: 'decompose-result', plan: 'x',
+      subtasks: [{ title: 'a', complexity: 'easy' }],
+      transcriptRef: null, sessionId: null,
+    });
+    appendOutbox(runId, { type: 'done' });
+    ingestRun(store, noopLog, runId);
+    assert.equal(store.getTask(taskId)!.status, 'plan_review', '开关关 → 人审');
+    store.close();
+  });
+});
+
+test('autoApprovePlan：含 medium 子任务 → 不放行（改动面/复杂度不满足）', () => {
+  withTmpDataDir(() => {
+    const { store, taskId, runId } = setupPlanning('hard');
+    const pid = store.getTask(taskId)!.projectId;
+    store.patchProject(pid, { autoApprovePlan: true });
+    appendOutbox(runId, {
+      type: 'decompose-result', plan: 'x',
+      subtasks: [{ title: 'a', complexity: 'easy' }, { title: 'b', complexity: 'medium' }],
+      transcriptRef: null, sessionId: null,
+    });
+    appendOutbox(runId, { type: 'done' });
+    ingestRun(store, noopLog, runId);
+    assert.equal(store.getTask(taskId)!.status, 'plan_review', '有 medium → 人审');
+    store.close();
+  });
+});
+
 test('ingest planner failed：走 failPlanAttempt（退避，任务留 speccing，不进 failed）', () => {
   withTmpDataDir(() => {
     const { store, taskId, runId } = setupPlanning('medium');