feat(P11-P12): 落地治理开关与移动端MVP（G0-G6/H1/M1-M4）

- 新增 Feature Flag 模型、评估服务与管理 API（erp_sync/invoice_verification）\n- 完成 ERP 与验真灰度收口（路由/服务/作业统一判定）\n- 补齐 pay 与手动 sync 的 department_id 灰度上下文\n- 增加管理后台开关页、PWA 基础设施与移动拍照/审批页面\n- 增加回归脚本、安全基线与压测脚本，更新文档与执行合同\n\nIssue: G0,G1,G2,G3,G4,G5,G6,H1,M1,M2,M3,M4

scripts/check-minimal.sh

@@ -28,6 +28,7 @@ echo "=== [2/4] Server Static Checks ==="
   node --check src/routes/dashboard.js
   node --check src/routes/budgets.js
   node --check src/routes/integrations.js
+  node --check src/routes/featureFlags.js
   node --check src/routes/travelOrders.js
   node --check src/routes/notifications.js
 
@@ -40,6 +41,7 @@ echo "=== [2/4] Server Static Checks ==="
 
   node --check src/services/ocr/index.js
   node --check src/services/verification/index.js
+  node --check src/services/featureFlags/index.js
   node --check src/services/integrations/outbox.js
   node --check src/services/integrations/erp.js
   node --check src/services/integrations/dispatcher.js
@@ -53,6 +55,9 @@ echo "=== [2/4] Server Static Checks ==="
   bash -n scripts/regression-dashboard.sh
   bash -n scripts/regression-budget.sh
   bash -n scripts/regression-integrations.sh
+  bash -n scripts/regression-feature-flags.sh
+  bash -n scripts/security-baseline.sh
+  bash -n scripts/benchmark-dashboard.sh
   bash -n scripts/regression-all.sh
 )