fix(portal-shell): rename teacher leave GraphQL ops to resolve duplicate declarations

Rename teacher-domain leave operations to avoid name collisions with
parent-domain operations in __generated__/operations.ts:
- GetLeaveRequests -> GetTeacherLeaveRequests
- ApproveLeave -> TeacherApproveLeave
- RejectLeave -> TeacherRejectLeave

Update MSW mock cases in graphql-data.ts to match the new operation
names. Student-domain acceptance (§9.2) verified: typecheck/lint/tokens
clean for student code, 9/9 student vitest tests pass.

Pre-existing CreateGrade/GetSchedulingRules duplicates belong to
admin/teacher domains and are out of student-domain scope (§14.2).

apps/portal-shell/src/lib/api/operations/leave.graphql.ts

@@ -13,7 +13,7 @@ import { gql } from "@apollo/client";
 // 页面通过 MSW 兜底获取列表数据，后端补齐后切换 fetcher 指向真实查询
 // 契约工单：classes_contract.md#leave-requests-list
 export const GET_TEACHER_LEAVE_REQUESTS_DOC = gql`
-  query GetLeaveRequests(
+  query GetTeacherLeaveRequests(
     $classId: ID
     $studentId: ID
     $status: String
@@ -56,7 +56,7 @@ export const GET_TEACHER_LEAVE_REQUESTS_DOC = gql`
 // 页面通过 MSW 兜底提交，后端补齐 mutation 后切换 fetcher
 // 契约工单：classes_contract.md#approve-leave
 export const TEACHER_APPROVE_LEAVE_DOC = gql`
-  mutation ApproveLeave($input: ApproveLeaveInput!) {
+  mutation TeacherApproveLeave($input: ApproveLeaveInput!) {
     approveLeave(input: $input) {
       id
       status
@@ -67,7 +67,7 @@ export const TEACHER_APPROVE_LEAVE_DOC = gql`
 // 拒绝请假：schema 无 Mutation 类型 → MSW 兜底
 // 契约工单：classes_contract.md#reject-leave
 export const TEACHER_REJECT_LEAVE_DOC = gql`
-  mutation RejectLeave($input: RejectLeaveInput!) {
+  mutation TeacherRejectLeave($input: RejectLeaveInput!) {
     rejectLeave(input: $input) {
       id
       status

apps/portal-shell/src/mocks/graphql-data.ts

@@ -6627,8 +6627,8 @@ export function graphqlResponse(
     // schema 无 leaveRequests(...) 根字段 → 全部走 MSW 兜底
     // 契约工单：docs/architecture/issues/contracts/classes_contract.md#leave
     //
-    // GetLeaveRequests($classId, $studentId, $status, $q)：列表查询
-    case "GetLeaveRequests": {
+    // GetTeacherLeaveRequests($classId, $studentId, $status, $q)：列表查询
+    case "GetTeacherLeaveRequests": {
       const classId = variables?.classId as string | undefined;
       const studentId = variables?.studentId as string | undefined;
       const status = variables?.status as string | undefined;
@@ -6653,8 +6653,8 @@ export function graphqlResponse(
         },
       };
     }
-    // ApproveLeave($input)：审批请假 mutation 兜底
-    case "ApproveLeave": {
+    // TeacherApproveLeave($input)：审批请假 mutation 兜底
+    case "TeacherApproveLeave": {
       const input = (variables?.input ?? {}) as Record<string, unknown>;
       const id = (input.id as string) ?? "";
       return {
@@ -6663,8 +6663,8 @@ export function graphqlResponse(
         },
       };
     }
-    // RejectLeave($input)：拒绝请假 mutation 兜底
-    case "RejectLeave": {
+    // TeacherRejectLeave($input)：拒绝请假 mutation 兜底
+    case "TeacherRejectLeave": {
       const input = (variables?.input ?? {}) as Record<string, unknown>;
       const id = (input.id as string) ?? "";
       return {