feat: 初始化义工时长管理系统

- 管理台：活动设置、时长登记、用户管理、数据导出（Excel/PNG）
- 用户端：姓名查询个人义工时长与活动记录
- 技术栈：React + Vite + TailwindCSS / Node.js + Express + sql.js (SQLite)
- 支持 Docker 部署，附带 Gitea Actions 自动部署工作流
- 响应式界面，兼容移动端与 PC 端
- 默认管理员账号：admin / admin123

server/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "volunteer-server",
+  "version": "1.0.0",
+  "private": true,
+  "type": "commonjs",
+  "scripts": {
+    "dev": "ts-node-dev --respawn --transpile-only src/index.ts",
+    "build": "tsc -p tsconfig.json && node -e \"require('fs').mkdirSync('dist/db',{recursive:true}); require('fs').copyFileSync('src/db/schema.sql','dist/db/schema.sql')\"",
+    "start": "node dist/index.js"
+  },
+  "dependencies": {
+    "bcryptjs": "^2.4.3",
+    "cors": "^2.8.5",
+    "express": "^4.21.0",
+    "jsonwebtoken": "^9.0.2",
+    "sql.js": "^1.11.0"
+  },
+  "devDependencies": {
+    "@types/bcryptjs": "^2.4.6",
+    "@types/cors": "^2.8.17",
+    "@types/sql.js": "^1.4.9",
+    "@types/express": "^5.0.0",
+    "@types/jsonwebtoken": "^9.0.7",
+    "@types/node": "^22.7.4",
+    "ts-node-dev": "^2.0.0",
+    "typescript": "^5.6.2"
+  }
+}