feat: DingTalk attendance import + integration config + expense types + UI polish

Server:
- Add DingTalk attendance import service with SSE progress streaming
- Add IntegrationConfig entity & module for multi-tenant DingTalk setup
- Add ExpenseType entity & ExpenseTypesModule
- Add SeedModule for DB initialization
- Add UserDingMapping entity for DingTalk user linkage
- Attendance service: import flow with dedup & student auto-mapping
- Rooms service: time-range overlap queries
- Sync controller/service: DingTalk integration wiring
- Permission guard: refactor to pure re-export
- Campus scope middleware: tenant-aware filtering

Admin UI:
- Attendance page: import UI with progress & result summary
- All pages: tableStyle/tablePagination standardization
- Login page: responsive styling
- Sensitive data: useViewSensitive hook for masked viewing
- Vite config: path aliases, build optimization
- Test infra: vitest config, test utilities

Docs: PRD DingTalk batch 1 & 2 design docs

apps/admin/src/pages/Schedules/index.tsx

@@ -509,7 +509,16 @@ const SchedulesPage: React.FC = () => {
                       return (
                         <td
                           key={wd}
+                          tabIndex={0}
+                          role="button"
+                          aria-label={`选择教室 ${classroom.name} ${WEEKDAYS[wd - 1]} 排课`}
                           onClick={() => handleCellClick(classroom.id, wd)}
+                          onKeyDown={(e) => {
+                            if (e.key === 'Enter' || e.key === ' ') {
+                              e.preventDefault();
+                              handleCellClick(classroom.id, wd);
+                            }
+                          }}
                           style={{
                             padding: 4,
                             border: '1px solid #f0f0f0',
@@ -610,7 +619,16 @@ const SchedulesPage: React.FC = () => {
                       return (
                         <td
                           key={di}
+                          tabIndex={0}
+                          role="button"
+                          aria-label={`${day.format('YYYY-MM-DD')} 排课详情`}
                           onClick={() => handleDateClick(day)}
+                          onKeyDown={(e) => {
+                            if (e.key === 'Enter' || e.key === ' ') {
+                              e.preventDefault();
+                              handleDateClick(day);
+                            }
+                          }}
                           style={{
                             padding: '6px 8px',
                             border: '1px solid #f0f0f0',