R56 A1-A6：费用标准管控

server/src/routes/reimbursements.js

@@ -663,16 +663,37 @@ function buildBudgetHint(budgetPool, reimbursementAmount, controlMode) {
 }
 
 function buildPrecheckBlockedError(precheck) {
+  const standardViolations = Array.isArray(precheck?.standardChecks)
+    ? precheck.standardChecks.filter((item) => item.exceeded && item.controlMode === "block")
+    : [];
+
   return new AppError({
     code: "VALID_001",
     message: "参数校验失败",
-    statusCode: 409,
+    statusCode: standardViolations.length ? 400 : 409,
     details: {
       precheck: precheck.blockingReasons,
+      ...(standardViolations.length ? { standardViolations } : {}),
     },
   });
 }
 
+function listExceededStandardViolations(precheck, controlMode = null) {
+  if (!Array.isArray(precheck?.standardChecks)) {
+    return [];
+  }
+
+  return precheck.standardChecks.filter((item) => {
+    if (!item.exceeded) {
+      return false;
+    }
+    if (!controlMode) {
+      return true;
+    }
+    return item.controlMode === controlMode;
+  });
+}
+
 function buildSkippedNotificationResult(reason) {
   return { skipped: true, reason };
 }
@@ -2079,6 +2100,8 @@ async function reimbursementRoutes(fastify) {
         if (authoritativePrecheck.decision === "block") {
           throw buildPrecheckBlockedError(authoritativePrecheck);
         }
+        const standardViolations = listExceededStandardViolations(authoritativePrecheck);
+        const standardWarnings = listExceededStandardViolations(authoritativePrecheck, "warn");
         const openedRiskFlags = await createRiskFlagsFromPrecheck(tx, {
           entityType: "reimbursement",
           entityId: reimbursementId,
@@ -2238,6 +2261,7 @@ async function reimbursementRoutes(fastify) {
               department_id: reimbursement.department_id,
               workflow_steps_snapshot: workflowSteps,
               approval_rule_id: approvalRule.id,
+              standardViolations,
             },
             context_department_id: reimbursement.department_id,
             created_by: request.employee.id,
@@ -2319,6 +2343,7 @@ async function reimbursementRoutes(fastify) {
             status: "reviewing",
             budget: budgetCheck,
             precheckDecision: authoritativePrecheck.decision,
+            standardWarnings,
             openedRiskFlagCount: openedRiskFlags.length,
           },
           sideEffectsContext: {