feat(banner): support dynamic banner management in admin and sync with miniprogram

server/src/db/mysql.ts

@@ -296,6 +296,27 @@ export async function initDatabase(): Promise<void> {
       ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
     `);
 
+    // 16. 首页轮播图运营配置表
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS banners (
+        id INT PRIMARY KEY AUTO_INCREMENT,
+        title VARCHAR(128) NOT NULL,
+        subtitle VARCHAR(255) DEFAULT '',
+        tag VARCHAR(64) DEFAULT '热门活动',
+        badge VARCHAR(64) DEFAULT 'HOT 热门组局',
+        badge_type VARCHAR(64) DEFAULT 'badge-hot',
+        bg VARCHAR(255) DEFAULT 'linear-gradient(135deg, #F43F5E 0%, #FB7185 100%)',
+        image TEXT,
+        link VARCHAR(255) DEFAULT '/pages/activity/list',
+        sort_order INT DEFAULT 0,
+        status TINYINT DEFAULT 1,
+        created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+        updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+        INDEX idx_sort (sort_order),
+        INDEX idx_status (status)
+      ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+    `);
+
     // 初始化配置单条记录
     const [cfgRows]: any = await conn.query('SELECT COUNT(*) as count FROM finance_config WHERE id = 1');
     if (cfgRows[0].count === 0) {
@@ -492,4 +513,16 @@ async function seedInitialDataIfEmpty(conn: any): Promise<void> {
       ('cmt_3', 'post_2', 2001, '涮肉小行家', 'https://images.unsplash.com/photo-1534528741775-53994a69daeb?w=120', '国服李白太强了！主玩大乔和张飞，晚上可以一起开黑吗？', NOW() - INTERVAL 25 MINUTE);
     `);
   }
+
+  // 13. 种子轮播图
+  const [bnrRows]: any = await conn.query('SELECT COUNT(*) as count FROM banners');
+  if (bnrRows[0].count === 0) {
+    await conn.query(`
+      INSERT INTO banners (id, title, subtitle, tag, badge, badge_type, bg, image, link, sort_order, status)
+      VALUES
+      (1, '同城聚会狂欢 | 网红火锅探店与量贩KTV嗨唱', 'AA制铜锅涮肉 · 8人热烈局', '热门陪伴', 'HOT 热门组局', 'badge-hot', 'linear-gradient(135deg, #F43F5E 0%, #FB7185 100%)', 'https://images.unsplash.com/photo-1555396273-367ea4eb4db5?w=800', '/pages/activity/detail?id=act_101', 1, 1),
+      (2, '量贩KTV麦霸沉浸欢唱 | 音乐达人歌声试听', '工体纯K 888豪华包厢', 'K歌对唱', '同城陪唱', 'badge-ktv', 'linear-gradient(135deg, #7C3AED 0%, #6366F1 100%)', 'https://images.unsplash.com/photo-1516450360452-9312f5e86fc7?w=800', '/pages/activity/detail?id=act_102', 2, 1),
+      (3, '精酿清吧微醺畅聊 | 线下陪吃陪喝立减30元', '望京跳海酒馆 · 慢调交友', '同城陪喝', '同城陪喝', 'badge-bar', 'linear-gradient(135deg, #059669 0%, #10B981 100%)', 'https://images.unsplash.com/photo-1517248135467-4c7edcad34c4?w=800', '/pages/activity/detail?id=act_103', 3, 1);
+    `);
+  }
 }