feat(web): 引入 Vite 前端应用并扩展仓库忽略规则

将整套 web 源码纳入仓库，并为 web/node_modules、构建产物及本地环境文件配置 .gitignore，同时移除占位用的 assets/.gitkeep。

Co-authored-by: Cursor <cursoragent@cursor.com>

web/package.json

@@ -0,0 +1,35 @@
+{
+    "name": "RFID-Management-System-Frontend",
+    "private": true,
+    "version": "0.0.0",
+    "type": "module",
+    "scripts": {
+        "dev": "vite",
+        "build": "vite build",
+        "preview": "vite preview"
+    },
+    "dependencies": {
+        "@element-plus/icons-vue": "^2.3.2",
+        "@fortawesome/fontawesome-free": "^6.7.2",
+        "@primeuix/themes": "^2.0.3",
+        "@primevue/forms": "^4.5.3",
+        "@vue/compiler-sfc": "^3.5.25",
+        "axios": "^1.13.2",
+        "echarts": "^6.0.0",
+        "element-plus": "^2.12.0",
+        "nprogress": "^0.2.0",
+        "pinia": "^3.0.4",
+        "primeicons": "^7.0.0",
+        "primevue": "^4.5.3",
+        "vue": "^3.5.25",
+        "vue-i18n": "^9.14.1",
+        "vue-router": "^4.6.4",
+        "vuefinder": "^4.0.33",
+        "webdav": "^5.8.0"
+    },
+    "devDependencies": {
+        "@vitejs/plugin-vue": "^6.0.3",
+        "sass": "^1.97.0",
+        "vite": "^7.3.0"
+    }
+}