PS6 修复采购提交预算预检阻断

server/src/routes/purchaseRequests.js

@@ -1612,7 +1612,19 @@ async function purchaseRequestRoutes(fastify) {
         }
 
         const warnings = [];
-        const budgetControlMode = authoritativePrecheck?.budgetHint?.controlMode ?? normalizeBudgetControlMode(fastify.config);
+        const budgetPrecheckGate = await evaluateFeatureFlag({
+          prisma: tx,
+          config: fastify.config,
+          flagKey: FEATURE_FLAG_KEYS.budgetPrecheck,
+          departmentId: purchaseRequest.department_id ?? request.employee.department_id ?? null,
+          strictDepartment: false,
+        });
+        const fallbackBudgetControlMode = normalizeBudgetControlMode(fastify.config);
+        const budgetControlMode = budgetPrecheckGate.enabled
+          ? authoritativePrecheck.matchedBudgetControlRule?.controlMode
+            ?? authoritativePrecheck?.budgetHint?.controlMode
+            ?? fallbackBudgetControlMode
+          : fallbackBudgetControlMode;
         if (!selectedBudgetPoolId) {
           if (!budgetPrecheckGate.enabled && budgetControlMode === "block") {
             throw buildValidationError({ budget: "missing_budget_pool" }, 409);