refactor: frontend TS migration + Tailwind4/daisyUI5 unify + BUILDPLATFORM docker build

- migrate frontend to TypeScript (vue-tsc strict in build), upgrade all deps to latest (Vite 8, Tailwind 4, daisyUI 5, Pinia 4, vue-router 5)
- restructure frontend dirs (api/components/common/layouts/styles/types/views)
- drop Element Plus, add daisyUI TagInput; main CSS 490KB->163KB, entry JS 618KB->1.3KB
- rewrite Dockerfile(.cn): frontend/backend stages pinned to $BUILDPLATFORM, CGO_ENABLED=0 cross-compile, no QEMU in multi-arch builds; add .dockerignore
- local dev: Vite /api proxy + make dev targets; go:embed all:dist with .gitkeep so backend runs without prior frontend build
- fix latent bugs: Keys.vue users ref, Settings.vue undefined userStore, Login.vue Ref-as-error display, res.error misuse
- add REFACTOR_PLAN.md (phased refactor log)

frontend/package.json

@@ -1,33 +1,42 @@
 {
-  "name": "my-project",
+  "name": "opencatd-open-frontend",
   "private": true,
   "version": "0.0.0",
   "type": "module",
   "scripts": {
     "dev": "vite",
-    "build": "vite build",
-    "preview": "vite preview"
+    "build": "vue-tsc --noEmit && vite build",
+    "preview": "vite preview",
+    "typecheck": "vue-tsc --noEmit"
   },
   "dependencies": {
-    "@simplewebauthn/browser": "^13.1.0",
-    "@vitejs/plugin-basic-ssl": "^2.0.0",
-    "axios": "^1.8.4",
-    "element-plus": "^2.9.7",
-    "lucide-vue-next": "^0.479.0",
-    "qrcode.vue": "^3.6.0",
-    "vue": "^3.5.13",
-    "vue-router": "^4.5.0"
+    "@iconify/vue": "^5.0.1",
+    "@lucide/vue": "^1.37.0",
+    "@simplewebauthn/browser": "^13.3.0",
+    "axios": "^1.20.0",
+    "pinia": "^4.0.3",
+    "qrcode.vue": "^3.10.0",
+    "vue": "^3.5.42",
+    "vue-router": "^5.3.0"
   },
   "devDependencies": {
-    "@iconify-json/mingcute": "^1.2.3",
-    "@iconify-json/simple-icons": "^1.2.32",
-    "@iconify/vue": "^4.3.0",
-    "@vitejs/plugin-vue": "^5.2.3",
-    "autoprefixer": "^10.4.21",
-    "daisyui": "^4.12.24",
-    "pinia": "^2.3.1",
-    "postcss": "^8.5.3",
-    "tailwindcss": "^3.4.17",
-    "vite": "^6.3.0"
-  }
+    "@iconify-json/mingcute": "^1.2.8",
+    "@iconify-json/simple-icons": "^1.2.94",
+    "@tailwindcss/vite": "^4.3.3",
+    "@types/node": "^26.4.0",
+    "@vitejs/plugin-basic-ssl": "^2.3.0",
+    "@vitejs/plugin-vue": "^6.0.8",
+    "daisyui": "^5.7.22",
+    "tailwindcss": "^4.3.3",
+    "typescript": "^6.0.3",
+    "vite": "^8.2.2",
+    "vue-tsc": "^3.3.11"
+  },
+  "pnpm": {
+    "onlyBuiltDependencies": [
+      "esbuild",
+      "vue-demi"
+    ]
+  },
+  "packageManager": "pnpm@10.25.0"
 }