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

server/scripts/regression-all.sh

@@ -10,6 +10,7 @@ RUN_VERIFICATION_REGRESSION="${RUN_VERIFICATION_REGRESSION:-0}"
 RUN_DASHBOARD_REGRESSION="${RUN_DASHBOARD_REGRESSION:-0}"
 RUN_BUDGET_REGRESSION="${RUN_BUDGET_REGRESSION:-0}"
 RUN_INTEGRATIONS_REGRESSION="${RUN_INTEGRATIONS_REGRESSION:-0}"
+RUN_FEATURE_FLAGS_REGRESSION="${RUN_FEATURE_FLAGS_REGRESSION:-0}"
 
 echo "=== [1/7] Smoke Test ==="
 "$SCRIPT_DIR/smoke-test.sh"
@@ -95,4 +96,13 @@ else
   echo ""
 fi
 
+if [[ "$RUN_FEATURE_FLAGS_REGRESSION" == "1" ]]; then
+  echo "=== [12/12] Feature Flags Regression ==="
+  "$SCRIPT_DIR/regression-feature-flags.sh"
+  echo ""
+else
+  echo "=== [12/12] Feature Flags Regression (skipped, RUN_FEATURE_FLAGS_REGRESSION=$RUN_FEATURE_FLAGS_REGRESSION) ==="
+  echo ""
+fi
+
 echo "[OK] All regressions passed"