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>

src/store/store.ts

@@ -45,6 +45,7 @@ export interface PatchProjectInput {
   model?: string | null; status?: 'active' | 'paused'; logo?: string | null;
   maxRetries?: number; timeoutMs?: number;
   budgetUsd?: number | null; budgetPeriod?: 'day' | 'month';
+  autoApprovePlan?: boolean; autoApproveExec?: boolean; checks?: string | null;
 }
 export interface PatchTaskInput {
   title?: string; priority?: number; complexity?: Complexity; deps?: string[];
@@ -230,6 +231,13 @@ export class Store {
       }
       sets.push('budget_period = @budget_period'); args.budget_period = patch.budgetPeriod;
     }
+    if (patch.autoApprovePlan !== undefined) {
+      sets.push('auto_approve_plan = @auto_approve_plan'); args.auto_approve_plan = patch.autoApprovePlan ? 1 : 0;
+    }
+    if (patch.autoApproveExec !== undefined) {
+      sets.push('auto_approve_exec = @auto_approve_exec'); args.auto_approve_exec = patch.autoApproveExec ? 1 : 0;
+    }
+    if (patch.checks !== undefined) { sets.push('checks = @checks'); args.checks = patch.checks; }
 
     if (sets.length > 0) {
       this.db.prepare(`UPDATE projects SET ${sets.join(', ')} WHERE id = @id`).run(args);