新增荣耀勋章/幸运币商品：迁移、上游商品映射与测试

backend/internal/database/migrations/002_add_medal_coin_products.sql

@@ -0,0 +1,38 @@
+-- ============================================================================
+-- 新增荣耀勋章 / 幸运币系列商品
+-- ============================================================================
+
+INSERT INTO products (code, name, category, status)
+SELECT v.code, v.name, v.category, 'active'
+FROM (VALUES
+  ('honor_medal_x2',  '荣耀勋章2个',  '道具'),
+  ('honor_medal_x30', '荣耀勋章30个', '道具'),
+  ('honor_medal_x90', '荣耀勋章90个', '道具'),
+  ('lucky_coin_x2',   '幸运币2个',    '道具'),
+  ('lucky_coin_x30',  '幸运币30个',   '道具'),
+  ('lucky_coin_x90',  '幸运币90个',   '道具')
+) AS v(code, name, category)
+ON CONFLICT (code) DO NOTHING;
+
+INSERT INTO merchant_products (merchant_id, product_id, sku, display_name, price_amount, cost_amount, currency, stock, status)
+SELECT
+  m.id,
+  p.id,
+  p.code,
+  p.name,
+  v.price_amount,
+  v.cost_amount,
+  'POINT',
+  -1,
+  'active'
+FROM (VALUES
+  ('honor_medal_x2',  20,  20),
+  ('honor_medal_x30', 300, 300),
+  ('honor_medal_x90', 900, 900),
+  ('lucky_coin_x2',   20,  20),
+  ('lucky_coin_x30',  300, 300),
+  ('lucky_coin_x90',  900, 900)
+) AS v(sku, price_amount, cost_amount)
+JOIN products p ON p.code = v.sku
+JOIN merchants m ON m.code = 'self-operated'
+ON CONFLICT (merchant_id, sku) DO NOTHING;