feat(admin): art-design-pro integration with local session auth

P1b Task 9: apps/admin based on art-design-pro v3.0.2 (tag, commit
d224dd4; source recorded in apps/admin/SOURCE.md), trimmed to
layout/login/i18n/request/table-form core. Login wired to real
POST /v1/auth/password (single-token session), Bearer header on all
requests, 401 interceptor logout+redirect, request-driven sliding
renewal (refresh at ~80% TTL, single-flight), best-effort
POST /v1/auth/logout on user-menu logout. One protected stub page
(相册管理). Dev port 5176 strictPort + /v1 proxy to 8080. Admin keeps
its own eslint9 flat config; root eslint ignores apps/admin/**.
vitest unit tests for renewal pacing + Playwright e2e (guard redirect,
localized wrong-password error, login lands on stub, token persists
across reload, logout clears session).

Co-Authored-By: Claude Code <noreply@anthropic.com>

apps/admin/tsconfig.json

@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "target": "esnext",
+    "module": "esnext",
+    "moduleResolution": "node",
+    "strict": true,
+    "jsx": "preserve",
+    "sourceMap": true,
+    "resolveJsonModule": true,
+    "esModuleInterop": true,
+    "lib": ["esnext", "dom"],
+    "types": ["vite/client", "node", "element-plus/global"],
+    "skipLibCheck": true,
+    "baseUrl": ".",
+    "paths": {
+      "@/*": ["src/*"],
+      "@views/*": ["src/views/*"],
+      "@imgs/*": ["src/assets/images/*"],
+      "@icons/*": ["src/assets/icons/*"],
+      "@utils/*": ["src/utils/*"],
+      "@stores/*": ["src/store/*"],
+      "@styles/*": ["src/assets/styles/*"]
+    }
+  },
+  "include": ["src/**/*", "src/**/*.ts", "src/**/*.d.ts", "src/**/*.tsx", "src/**/*.vue"],
+  "exclude": ["node_modules", "dist", "**/*.js"]
+}