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/vitest.config.ts

@@ -0,0 +1,38 @@
+import { defineConfig } from 'vitest/config';
+import react from '@vitejs/plugin-react';
+import path from 'node:path';
+
+export default defineConfig({
+  plugins: [react()],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, 'src'),
+    },
+  },
+  test: {
+    // Browser mode: tests run inside a real Chromium browser via Playwright
+    browser: {
+      enabled: true,
+      name: 'chromium',
+      provider: 'playwright',
+      headless: true,
+      // Slow down interactions slightly so UI animations settle
+      slowHijackESM: false,
+    },
+    // Integration tests: match *.integration.test.{ts,tsx}
+    include: ['src/**/*.integration.test.{ts,tsx}'],
+    // Global timeout for browser operations
+    testTimeout: 30_000,
+    // Retry flaky browser tests once
+    retry: 1,
+    // Coverage
+    coverage: {
+      provider: 'v8',
+      reporter: ['text', 'lcov'],
+      include: ['src/**/*.{ts,tsx}'],
+      exclude: ['src/**/*.test.*', 'src/**/*.spec.*'],
+    },
+    // Setup file for global test helpers
+    setupFiles: ['./src/test/setup.ts'],
+  },
+});