docs: 更新项目文档，完善需求和技术细节

backend/routes/auth.js

@@ -66,7 +66,7 @@ router.post('/register', async (req, res, next) => {
 
     // 创建用户
     const result = await dbConnector.query(
-      'INSERT INTO users (username, password_hash, phone, email, user_type) VALUES (?, ?, ?, ?, ?)',
+      'INSERT INTO users (username, password, phone, email, user_type) VALUES (?, ?, ?, ?, ?)',
       [username, hashedPassword, phone, email, user_type]
     );
 
@@ -127,7 +127,7 @@ router.post('/login', async (req, res, next) => {
     const userData = user[0];
 
     // 验证密码
-    const isValidPassword = await bcrypt.compare(password, userData.password_hash);
+    const isValidPassword = await bcrypt.compare(password, userData.password);
     if (!isValidPassword) {
       return res.status(401).json({
         code: 401,