chore: 从 git 中移除 backend/target 目录

- 使用 git rm --cached 从版本控制中删除 target 目录
- .gitignore 已配置忽略 target 和 node_modules
- 本地文件保留，仅从 git 索引中删除

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

frontend/package.json

@@ -10,27 +10,29 @@
     "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore"
   },
   "dependencies": {
-    "vue": "^3.4.0",
-    "vue-router": "^4.2.0",
+    "@element-plus/icons-vue": "^2.3.0",
+    "axios": "^1.6.0",
+    "bcryptjs": "^3.0.3",
+    "dayjs": "^1.11.0",
+    "element-plus": "^2.5.0",
     "pinia": "^2.1.0",
     "pinia-plugin-persistedstate": "^3.2.0",
-    "axios": "^1.6.0",
-    "element-plus": "^2.5.0",
-    "@element-plus/icons-vue": "^2.3.0",
-    "dayjs": "^1.11.0"
+    "vue": "^3.4.0",
+    "vue-router": "^4.2.0"
   },
   "devDependencies": {
-    "@vitejs/plugin-vue": "^5.0.0",
-    "vite": "^5.0.0",
-    "vue-tsc": "^1.8.0",
-    "typescript": "^5.3.0",
+    "@types/bcryptjs": "^3.0.0",
     "@types/node": "^20.10.0",
+    "@typescript-eslint/eslint-plugin": "^6.15.0",
+    "@typescript-eslint/parser": "^6.15.0",
+    "@vitejs/plugin-vue": "^5.0.0",
     "eslint": "^8.55.0",
     "eslint-plugin-vue": "^9.19.0",
-    "@typescript-eslint/parser": "^6.15.0",
-    "@typescript-eslint/eslint-plugin": "^6.15.0",
     "prettier": "^3.1.0",
-    "sass": "^1.69.0"
+    "sass": "^1.69.0",
+    "typescript": "^5.3.0",
+    "vite": "^5.0.0",
+    "vue-tsc": "^1.8.0"
   },
   "engines": {
     "node": ">=16.0.0",