feat: 路线图R1决策建议一键落地+R2机会推送+R5预算闭环

R1(P0): AI建议一键应用到KPI/预算/行动方案
- 新表 ai_suggestions + AISuggestion 模型(init_db自动建)
- /api/cma/ai/suggestions CRUD + /{id}/apply(复用kpis/budget/action_plans) + dismiss
- 应用写 OperationLog(action=ai_suggestion_apply, detail含suggestion_id/before/after)
- 规则驱动建议生成 generate_rule_suggestions(低执行率/高执行率/预算超支/pending预警)
- 幂等: 同entity+type+target_id+title+unapplied不重复建; applied后拒绝重复应用
- 前端: Dashboard AI面板建议卡(应用到/忽略) + 建议中心页 /ai-suggestions

R2(P1): 数据找人扩大-机会类推送
- scripts/opportunity_detector.py: KPI向好(执行率>110%)/预算余量(<70%且actual>0)/预测上行
- scripts/daily_push.py: 异常+机会 每日9:15推企微(8800/send, --dry-run调试)
- crontab: 15 9 * * * (alert_generator 9:00之后)

R5(P0): 预算闭环加固
- auto-decompose批量幂等: 只取年度行(period=YYYY-00)+同KPI多版本取一行
- scripts/closed_loop_check.py: 预算执行率异常→检查现金流/行动同步→缺失提示+报告
- scripts/verify_decompose_idempotent.py: 幂等验证脚本

测试: test_ai_suggestions(10例)+test_roadmap_r2r5(14例); 修test_budget幂等契约适配年度行
全量: 673 passed

frontend/src/router/index.ts

@@ -6,6 +6,7 @@ const routes = [
   { path: '/', component: () => import('@/layouts/MainLayout.vue'), redirect: '/my-dashboard',
     children: [
       { path: 'dashboard', name: 'Dashboard', component: () => import('@/views/Dashboard.vue'), meta: { title: '经营看板', roles: ['ceo', 'finance', 'business', 'it'] } },
+      { path: 'ai-suggestions', name: 'SuggestionCenter', component: () => import('@/views/SuggestionCenter.vue'), meta: { title: 'AI建议中心', roles: ['ceo', 'finance', 'business', 'it'] } },
       { path: 'kpis', name: 'KPIs', component: () => import('@/views/KPIList.vue'), meta: { title: 'KPI字典', roles: ['ceo', 'finance', 'business', 'it'], editable: true } },
       { path: 'kpis/:id', name: 'KPIDetail', component: () => import('@/views/KPIDetail.vue'), meta: { title: 'KPI详情', roles: ['ceo', 'finance', 'business', 'it'], editable: true } },
       { path: 'maps', name: 'Maps', component: () => import('@/views/MapList.vue'), meta: { title: '战略地图', roles: ['ceo', 'finance'], editable: true } },