feat: 小程序移除管理后台入口，新增admin-web前端项目

将管理后台功能从微信小程序中剥离，独立为Vue.js前端项目admin-web

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

admin-web/package.json

@@ -0,0 +1,48 @@
+{
+  "name": "admin-web",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "serve": "vue-cli-service serve",
+    "build": "vue-cli-service build",
+    "lint": "vue-cli-service lint"
+  },
+  "dependencies": {
+    "axios": "^1.6.0",
+    "core-js": "^3.8.3",
+    "vue": "^2.6.14",
+    "vue-router": "^3.6.5"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.12.16",
+    "@babel/eslint-parser": "^7.12.16",
+    "@vue/cli-plugin-babel": "~5.0.0",
+    "@vue/cli-plugin-eslint": "~5.0.0",
+    "@vue/cli-service": "~5.0.0",
+    "eslint": "^7.32.0",
+    "eslint-plugin-vue": "^8.0.3",
+    "vue-template-compiler": "^2.6.14"
+  },
+  "eslintConfig": {
+    "root": true,
+    "env": {
+      "node": true
+    },
+    "extends": [
+      "plugin:vue/essential",
+      "eslint:recommended"
+    ],
+    "parserOptions": {
+      "parser": "@babel/eslint-parser"
+    },
+    "rules": {
+      "no-unused-vars": "warn",
+      "vue/multi-word-component-names": "off"
+    }
+  },
+  "browserslist": [
+    "> 1%",
+    "last 2 versions",
+    "not dead"
+  ]
+}