feat: 添加数据库初始化SQL

init.sql

@@ -0,0 +1,45 @@
+-- 创建数据库（如果不存在）
+CREATE DATABASE IF NOT EXISTS smalltown;
+USE smalltown;
+
+-- 用户表
+CREATE TABLE IF NOT EXISTS users (
+    id VARCHAR(36) PRIMARY KEY,
+    username VARCHAR(50) NOT NULL UNIQUE,
+    password_hash VARCHAR(64) NOT NULL,
+    token VARCHAR(64),
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    INDEX idx_token (token),
+    INDEX idx_username (username)
+);
+
+-- 房屋表
+CREATE TABLE IF NOT EXISTS houses (
+    id VARCHAR(36) PRIMARY KEY,
+    owner VARCHAR(50) NOT NULL,
+    title VARCHAR(200) NOT NULL,
+    description TEXT,
+    price INT NOT NULL,
+    district VARCHAR(50) NOT NULL,
+    address VARCHAR(500) NOT NULL,
+    phone VARCHAR(20) NOT NULL,
+    images JSON,
+    status VARCHAR(20) DEFAULT 'pending',
+    reject_reason VARCHAR(500),
+    reviewed_at DATETIME,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    INDEX idx_owner (owner),
+    INDEX idx_district (district),
+    INDEX idx_status (status),
+    INDEX idx_created (created_at)
+);
+
+-- 地区表
+CREATE TABLE IF NOT EXISTS districts (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(50) NOT NULL UNIQUE,
+    sort_order INT DEFAULT 0
+);
+
+-- 初始化地区数据
+INSERT INTO districts (name, sort_order) VALUES ('北京市-奶东村', 1);