fix: 员工端Header标题显示企业名称而非安职通Logo

- 后端3处登录接口（密码/验证码/auto-login）返回 orgName
- 前端 PortalLayout Header 改为显示 employee.orgName
- 移除 Logo 组件引用

backend/src/routes/portal.routes.ts

@@ -40,7 +40,7 @@ router.post('/login', async (req, res, next) => {
     // 查找所有匹配手机号的在职员工（可能跨组织）
     const employees = await prisma.employee.findMany({
       where: { phone: data.phone, status: 'ACTIVE' },
-      select: { id: true, name: true, department: true, orgId: true, passwordHash: true },
+      select: { id: true, name: true, department: true, orgId: true, passwordHash: true, org: { select: { name: true } } },
     })
     if (employees.length === 0) {
       return res.status(400).json({ success: false, error: { code: 'AUTH_FAILED', message: '手机号或密码错误' } })
@@ -60,7 +60,7 @@ router.post('/login', async (req, res, next) => {
       return res.status(400).json({ success: false, error: { code: 'AUTH_FAILED', message: '手机号或密码错误' } })
     }
     const token = signAccessToken({ id: matchedEmployee.id, orgId: matchedEmployee.orgId, role: 'EMPLOYEE' })
-    res.json({ success: true, data: { token, employee: { id: matchedEmployee.id, name: matchedEmployee.name, department: matchedEmployee.department } } })
+    res.json({ success: true, data: { token, employee: { id: matchedEmployee.id, name: matchedEmployee.name, department: matchedEmployee.department, orgName: (matchedEmployee as any).org?.name || '' } } })
   } catch (err) {
     next(err)
   }
@@ -110,7 +110,7 @@ router.post('/verify-code', async (req, res, next) => {
     // 查找所有匹配手机号的在职员工（可能跨组织）
     const employees = await prisma.employee.findMany({
       where: { phone: data.phone, status: 'ACTIVE' },
-      select: { id: true, name: true, department: true, orgId: true },
+      select: { id: true, name: true, department: true, orgId: true, org: { select: { name: true } } },
     })
     if (employees.length === 0) {
       return res.status(400).json({ success: false, error: { code: 'NOT_FOUND', message: '员工不存在' } })
@@ -118,7 +118,7 @@ router.post('/verify-code', async (req, res, next) => {
     // 如果只有一个匹配，直接登录
     const employee = employees[0]
     const token = signAccessToken({ id: employee.id, orgId: employee.orgId, role: 'EMPLOYEE' })
-    res.json({ success: true, data: { token, employee: { id: employee.id, name: employee.name, department: employee.department } } })
+    res.json({ success: true, data: { token, employee: { id: employee.id, name: employee.name, department: employee.department, orgName: (employee as any).org?.name || '' } } })
   } catch (err) {
     next(err)
   }
@@ -694,13 +694,13 @@ router.get('/auto-login', async (req, res, next) => {
     }
     const employee = await prisma.employee.findFirst({
       where: { id: payload.id, orgId: payload.orgId, status: 'ACTIVE' },
-      select: { id: true, name: true, department: true, orgId: true },
+      select: { id: true, name: true, department: true, orgId: true, org: { select: { name: true } } },
     })
     if (!employee) {
       return res.status(404).json({ success: false, error: { code: 'NOT_FOUND', message: '员工不存在或已离职' } })
     }
     const accessToken = signAccessToken({ id: employee.id, orgId: employee.orgId, role: 'EMPLOYEE' })
-    res.json({ success: true, data: { token: accessToken, employee: { id: employee.id, name: employee.name, department: employee.department } } })
+    res.json({ success: true, data: { token: accessToken, employee: { id: employee.id, name: employee.name, department: employee.department, orgName: (employee as any).org?.name || '' } } })
   } catch (err) {
     next(err)
   }