采购提交与报销新建/提交事务显式使用10秒上限 [09-27-purchase-submit-tx-timeout]

负载下采购提交事务超过 Prisma 交互事务默认 5000ms（P2028）返回 500。
分段计时显示无单一瓶颈（总时长中位 843ms、最大 3506ms，编号锁等待
最多 535ms），是约 20 条顺序查询整体变慢贴近上限。报销新建/提交同结构。
三处改用项目既有的 { maxWait: 5000, timeout: 10000 }，事务内容不变；
新增采购与报销提交的事务选项回归断言。

Co-Authored-By: Claude Opus 5.5 <[email protected]>

server/src/routes/purchaseRequests.js

@@ -1701,6 +1701,8 @@ async function purchaseRequestRoutes(fastify, options = {}) {
         throw buildBusinessValidationError("purchase_request.approver_unavailable", { workflow: "no_actionable_approver" }, 409);
       }
 
+      // ~20 sequential queries plus document numbering; under load this exceeded
+      // Prisma's 5s interactive-transaction default (P2028 -> 500).
       const submitResult = await fastify.prisma.$transaction(async (tx) => {
         const locked = await loadPurchaseRequestForUpdate(tx, purchaseRequestId);
         ensureDraftOwner(request, locked);
@@ -1949,7 +1951,7 @@ async function purchaseRequestRoutes(fastify, options = {}) {
             budgetReservation,
           },
         };
-      });
+      }, { maxWait: 5000, timeout: 10000 });
 
       void fastify.prisma.auditLog.create({
         data: buildAuditLogData(request, {

server/src/routes/reimbursements.js

@@ -1863,7 +1863,7 @@ async function reimbursementRoutes(fastify) {
           ...created,
           items: createdItems,
         };
-      });
+      }, { maxWait: 5000, timeout: 10000 });
 
       return sendData(reply, request, {
         id: reimbursement.id,
@@ -4498,7 +4498,7 @@ async function reimbursementRoutes(fastify) {
             actorId: request.employee.id,
           },
         };
-      });
+      }, { maxWait: 5000, timeout: 10000 });
 
       await finalizeReimbursementSubmitSideEffects({
         prisma: fastify.prisma,

server/tests/unit/routes/purchase.submit-budget-precheck.test.js

@@ -315,6 +315,17 @@ describe("purchase request submit budget precheck gate", () => {
 
     await app.close();
   });
+
+  it("runs the submit transaction with a 10s budget instead of Prisma's 5s default", async () => {
+    resolveEntityPrecheckMock.mockResolvedValue(buildPrecheck({ budgetHint: { controlMode: "block" } }));
+    const { app, prisma } = await buildApp({ budgetControlMode: "warn", budgetPrecheckEnabled: false });
+
+    const response = await app.inject({ method: "POST", url: `/api/purchase-requests/${PURCHASE_REQUEST_ID}/submit` });
+
+    expect(response.statusCode).toBe(200);
+    expect(prisma.$transaction).toHaveBeenCalledWith(expect.any(Function), { maxWait: 5000, timeout: 10000 });
+    await app.close();
+  });
 });
 
 it.each([1, 2])("submits a stored v%s purchase draft under active policy without reclassifying it", async (version) => {

server/tests/unit/routes/reimbursements.expense-standards.test.js

@@ -325,7 +325,7 @@ describe("reimbursements routes expense standard integration", () => {
 
   it.each([true, false])("avoids unused bound-invoice counts: per-item guard=%s", async invoiceGuardEnabled => {
     resolveEntityPrecheckMock.mockResolvedValue(buildPrecheck());
-    const { app, tx } = await buildApp({ invoiceGuardEnabled, reimbursementItems: [{
+    const { app, prisma, tx } = await buildApp({ invoiceGuardEnabled, reimbursementItems: [{
       id: "item-no-invoice", amount: "180.00",
       expense_type: { code: "office", category: "office", requires_invoice: invoiceGuardEnabled },
     }] });
@@ -336,6 +336,8 @@ describe("reimbursements routes expense standard integration", () => {
       expect(tx.reimbursementItem.findFirst).not.toHaveBeenCalled();
       expect(tx.reimbursementItem.aggregate).toHaveBeenCalledTimes(1);
       expect(tx.workflowHistory.create).toHaveBeenCalled();
+      // Prisma's 5s interactive-transaction default was exceeded under load (P2028 -> 500).
+      expect(prisma.$transaction).toHaveBeenCalledWith(expect.any(Function), { maxWait: 5000, timeout: 10000 });
     } finally { await app.close(); }
   });