chore(init): 初始化解忧商行项目并完成 Phase 0 基座

backend/scripts/clear_test_listings.sql

@@ -0,0 +1,21 @@
+-- 清空测试商品数据
+-- 注意：这会删除所有待审核和已审核的商品数据
+
+-- 开始事务
+START TRANSACTION;
+
+-- 显示清理前的统计
+SELECT
+    status,
+    COUNT(*) as count
+FROM game_listings
+GROUP BY status;
+
+-- 删除所有商品（保留用户和其他核心数据）
+DELETE FROM game_listings WHERE 1=1;
+
+-- 提交事务
+COMMIT;
+
+-- 显示清理后的统计
+SELECT COUNT(*) as remaining_listings FROM game_listings;

backend/scripts/mohong_seed_from_har.json

@@ -0,0 +1,44 @@
+{
+  "source": "/Users/yml/Desktop/抓包/大红抓包 2.har",
+  "note": "seed embedded in migrations/000029_mohong_categories_and_seed.sql",
+  "unique_products": 92,
+  "relations": 133,
+  "categories": [
+    {
+      "name": "炫彩",
+      "count": 33
+    },
+    {
+      "name": "任务",
+      "count": 4
+    },
+    {
+      "name": "AW",
+      "count": 2
+    },
+    {
+      "name": "大红",
+      "count": 52
+    },
+    {
+      "name": "四格大红",
+      "count": 8
+    },
+    {
+      "name": "六格大红",
+      "count": 11
+    },
+    {
+      "name": "九格大红",
+      "count": 14
+    },
+    {
+      "name": "十二格大红",
+      "count": 8
+    },
+    {
+      "name": "哈弗币",
+      "count": 1
+    }
+  ]
+}