fix: harden tenant auth and quality gates

api/src/auth/session-validation.middleware.ts

@@ -1,4 +1,4 @@
-import { Injectable, NestMiddleware, UnauthorizedException } from '@nestjs/common';
+import { ForbiddenException, Injectable, NestMiddleware, UnauthorizedException } from '@nestjs/common';
 import { PrismaService } from '../prisma/prisma.service';
 import { AuthSessionRecord, SessionPortal, SessionService } from './session.service';
 
@@ -8,6 +8,7 @@ export type SessionRequest = {
   url?: string;
   sessionUserId?: string;
   sessionToken?: string;
+  sessionTenantId?: string;
   authSession?: AuthSessionRecord;
 };
 
@@ -38,7 +39,7 @@ export class SessionValidationMiddleware implements NestMiddleware {
 
     const user = await this.prisma.user.findUnique({
       where: { id: result.record.userId },
-      select: { id: true, status: true, deletedAt: true, sessionVersion: true },
+      select: { id: true, tenantId: true, status: true, deletedAt: true, sessionVersion: true },
     });
     if (!user || user.status !== 'active' || user.deletedAt || user.sessionVersion !== result.record.sessionVersion) {
       await this.sessions.remove(token);
@@ -51,6 +52,25 @@ export class SessionValidationMiddleware implements NestMiddleware {
     request.sessionUserId = user.id;
     request.sessionToken = token;
     request.authSession = result.record;
+    if (portal === 'client') {
+      if (!user.tenantId) {
+        throw new ForbiddenException({ code: 'CLIENT_TENANT_REQUIRED', message: '当前客户端账号未关联企业' });
+      }
+      const suppliedTenantId = request.header('x-tenant-id')?.trim();
+      if (suppliedTenantId && suppliedTenantId !== user.tenantId) {
+        await this.prisma.operationLog.create({
+          data: {
+            tenantId: user.tenantId,
+            userId: user.id,
+            action: 'security.client_tenant_mismatch',
+            resource: 'auth_session',
+            detail: { suppliedTenantId },
+          },
+        });
+        throw new ForbiddenException({ code: 'CLIENT_TENANT_MISMATCH', message: '请求企业与登录企业不一致' });
+      }
+      request.sessionTenantId = user.tenantId;
+    }
     const isSessionRecoveryRoute = /\/auth\/(?:session(?:\/unlock)?|logout)(?:\?|$)/.test(path);
     if (result.status === 'locked' && !isSessionRecoveryRoute) {
       if (result.newlyLocked) {