refactor(backend): 更新数据库配置并迁移至MySQL，优化文档和技术栈描述

backend/scripts/init-database.sql

@@ -0,0 +1,67 @@
+-- 创建数据库
+CREATE DATABASE IF NOT EXISTS jiebanke_dev CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+USE jiebanke_dev;
+
+-- 创建管理员表
+CREATE TABLE IF NOT EXISTS admins (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    username VARCHAR(50) NOT NULL UNIQUE,
+    password VARCHAR(255) NOT NULL,
+    email VARCHAR(100),
+    role ENUM('super_admin', 'admin') DEFAULT 'admin',
+    status ENUM('active', 'inactive') DEFAULT 'active',
+    last_login TIMESTAMP NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+);
+
+-- 创建用户表
+CREATE TABLE IF NOT EXISTS users (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    username VARCHAR(50) NOT NULL UNIQUE,
+    password VARCHAR(255) NOT NULL,
+    email VARCHAR(100) UNIQUE,
+    phone VARCHAR(20),
+    real_name VARCHAR(100),
+    id_card VARCHAR(20),
+    status ENUM('active', 'inactive', 'frozen') DEFAULT 'active',
+    balance DECIMAL(15,2) DEFAULT 0.00,
+    credit_score INT DEFAULT 100,
+    last_login TIMESTAMP NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+);
+
+-- 创建订单表
+CREATE TABLE IF NOT EXISTS orders (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    user_id INT NOT NULL,
+    order_no VARCHAR(50) NOT NULL UNIQUE,
+    amount DECIMAL(15,2) NOT NULL,
+    status ENUM('pending', 'processing', 'completed', 'cancelled', 'failed') DEFAULT 'pending',
+    type ENUM('loan', 'repayment', 'transfer') NOT NULL,
+    description TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+-- 插入默认管理员账号
+INSERT INTO admins (username, password, email, role) VALUES 
+('admin', '$2b$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'admin@jiebanke.com', 'super_admin'),
+('manager', '$2b$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'manager@jiebanke.com', 'admin');
+
+-- 插入测试用户账号
+INSERT INTO users (username, password, email, phone, real_name, id_card, balance, credit_score) VALUES 
+('user1', '$2b$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'user1@example.com', '13800138001', '张三', '110101199001011234', 1000.00, 95),
+('user2', '$2b$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'user2@example.com', '13800138002', '李四', '110101199002022345', 500.00, 85);
+
+-- 创建索引
+CREATE INDEX idx_admins_username ON admins(username);
+CREATE INDEX idx_admins_email ON admins(email);
+CREATE INDEX idx_users_username ON users(username);
+CREATE INDEX idx_users_email ON users(email);
+CREATE INDEX idx_users_phone ON users(phone);
+CREATE INDEX idx_orders_user_id ON orders(user_id);
+CREATE INDEX idx_orders_order_no ON orders(order_no);
+CREATE INDEX idx_orders_status ON orders(status);