refactor(catalog): 废弃 LEWAN_ 镜像，统一英文 SKU 与积分价，商品图按 SKU 缓存

对外目录只保留英文主 sku；迁移硬删镜像并校准 1元=100积分；发货页/凭证优先使用 local {sku}.webp。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/internal/database/migrations/011_catalog_english_sku_and_prices.sql

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+-- ============================================================================
+-- 商品目录收敛（幂等，可在开发库反复执行前先清 schema_migrations.011）
+-- 1) 补齐乐玩独有品英文主 sku
+-- 2) 硬删除全部 LEWAN_* / lewan_* 镜像（含已软删行）
+-- 3) 统一积分价为 1元=100积分（按权威目录绝对值校准）
+-- ============================================================================
+
+-- 1) 乐玩独有 → 英文主商品
+WITH lewan_only(new_sku, display_name, category, legacy_sku, default_price) AS (
+  VALUES
+    ('pack_dragon_palace', '龙宫之主大礼包', '礼包', 'LEWAN_46524A53', 80000),
+    ('suit_dune_song',     '套装-沙丘之歌',   '套装', 'LEWAN_F3B83B85', 10200),
+    ('suit_jester_face',   '套装-花面小丑',   '套装', 'LEWAN_B3891176', 20000)
+)
+INSERT INTO products (code, name, category, status)
+SELECT v.new_sku, v.display_name, v.category, 'active'
+FROM lewan_only v
+ON CONFLICT (code) DO NOTHING;
+
+WITH lewan_only(new_sku, display_name, category, legacy_sku, default_price) AS (
+  VALUES
+    ('pack_dragon_palace', '龙宫之主大礼包', '礼包', 'LEWAN_46524A53', 80000),
+    ('suit_dune_song',     '套装-沙丘之歌',   '套装', 'LEWAN_F3B83B85', 10200),
+    ('suit_jester_face',   '套装-花面小丑',   '套装', 'LEWAN_B3891176', 20000)
+),
+self_merchant AS (
+  SELECT id FROM merchants WHERE code = 'self-operated' LIMIT 1
+),
+legacy AS (
+  SELECT
+    v.new_sku,
+    v.display_name,
+    v.default_price,
+    mp.price_amount,
+    mp.cost_amount,
+    mp.fulfillment_config,
+    p.id AS product_id
+  FROM lewan_only v
+  JOIN products p ON p.code = v.new_sku
+  LEFT JOIN merchant_products mp
+    ON mp.sku = v.legacy_sku
+   AND mp.merchant_id = (SELECT id FROM self_merchant)
+)
+INSERT INTO merchant_products (
+  merchant_id, product_id, sku, display_name,
+  price_amount, cost_amount, currency, stock, status, fulfillment_config
+)
+SELECT
+  sm.id,
+  l.product_id,
+  l.new_sku,
+  l.display_name,
+  COALESCE(NULLIF(l.price_amount, 0), l.default_price),
+  COALESCE(NULLIF(l.cost_amount, 0), l.default_price),
+  'POINT',
+  -1,
+  'active',
+  COALESCE(
+    NULLIF(l.fulfillment_config, ''),
+    CASE l.new_sku
+      WHEN 'pack_dragon_palace' THEN
+        '{"routing_mode":"lewan","priority":["lewan","dlc"],"dlc_good_id":"","lewan_product_id":"46524a53-068d-4bee-97ff-d5e7873818e0","lewan_name":"龙宫之主大礼包","delivery_type":"LINK_BINDING"}'
+      WHEN 'suit_dune_song' THEN
+        '{"routing_mode":"lewan","priority":["lewan","dlc"],"dlc_good_id":"","lewan_product_id":"f3b83b85-c664-4440-94ac-a4b0cd7cf0f3","lewan_name":"套装-沙丘之歌","delivery_type":"LINK_BINDING"}'
+      WHEN 'suit_jester_face' THEN
+        '{"routing_mode":"lewan","priority":["lewan","dlc"],"dlc_good_id":"","lewan_product_id":"b3891176-5ffa-40cb-8c58-7e46eac3f381","lewan_name":"套装-花面小丑","delivery_type":"LINK_BINDING"}'
+    END
+  )
+FROM legacy l
+CROSS JOIN self_merchant sm
+ON CONFLICT (merchant_id, sku) DO UPDATE
+SET
+  display_name = EXCLUDED.display_name,
+  price_amount = EXCLUDED.price_amount,
+  cost_amount = EXCLUDED.cost_amount,
+  fulfillment_config = COALESCE(NULLIF(merchant_products.fulfillment_config, ''), EXCLUDED.fulfillment_config),
+  status = 'active',
+  deleted_at = NULL;
+
+-- 已持有对应 LEWAN_* 的其它商户同步英文 sku
+WITH mapping(new_sku, legacy_sku) AS (
+  VALUES
+    ('pack_dragon_palace', 'LEWAN_46524A53'),
+    ('suit_dune_song', 'LEWAN_F3B83B85'),
+    ('suit_jester_face', 'LEWAN_B3891176')
+),
+template AS (
+  SELECT mp.*
+  FROM merchant_products mp
+  JOIN merchants m ON m.id = mp.merchant_id AND m.code = 'self-operated'
+  JOIN mapping map ON map.new_sku = mp.sku
+  WHERE mp.deleted_at IS NULL
+)
+INSERT INTO merchant_products (
+  merchant_id, product_id, sku, display_name,
+  price_amount, cost_amount, currency, stock, status, fulfillment_config
+)
+SELECT
+  legacy.merchant_id,
+  t.product_id,
+  t.sku,
+  t.display_name,
+  COALESCE(NULLIF(legacy.price_amount, 0), t.price_amount),
+  COALESCE(NULLIF(legacy.cost_amount, 0), t.cost_amount),
+  'POINT',
+  -1,
+  'active',
+  COALESCE(NULLIF(t.fulfillment_config, ''), legacy.fulfillment_config)
+FROM merchant_products legacy
+JOIN mapping map ON map.legacy_sku = legacy.sku
+JOIN template t ON t.sku = map.new_sku
+JOIN merchants m ON m.id = legacy.merchant_id AND m.code <> 'self-operated'
+ON CONFLICT (merchant_id, sku) DO NOTHING;
+
+-- 2) 硬删除全部 LEWAN_* 镜像（含软删）
+DELETE FROM merchant_products WHERE sku ILIKE 'lewan_%';
+DELETE FROM products WHERE code ILIKE 'lewan_%';
+
+-- 3) 权威价格校准：1元=100积分（docs/商品目录.md 2026-09-14）
+WITH prices(sku, amount) AS (
+  VALUES
+    ('suit_alan_walker', 3600),
+    ('suit_shadow_gothic', 8880),
+    ('top_black_elite_trainer', 3600),
+    ('m416_hamster_gray', 16800),
+    ('bag_cute_bear', 28800),
+    ('suit_dual_fluffy', 11240),
+    ('suit_pink_sheep', 18800),
+    ('suit_first_peach', 9880),
+    ('suit_romantic_destiny', 3600),
+    ('pack_western_cowboy', 32000),
+    ('smoke_pink_sheep', 4880),
+    ('frag_pink_sheep', 4880),
+    ('suit_hamster_gray', 12800),
+    ('suit_cute_bear', 16800),
+    ('bag_pink_sheep', 16800),
+    ('helmet_pink_sheep', 16800),
+    ('bag_hamster_gray', 16800),
+    ('helmet_hamster_gray', 16800),
+    ('suit_western_mystery', 11500),
+    ('helmet_panda_treasure', 23400),
+    ('suit_panda_round', 23400),
+    ('suit_panda_tuan', 23400),
+    ('pack_lava_ranger', 9600),
+    ('suit_sand_dancer', 8400),
+    ('pack_star_roam_outfit', 83600),
+    ('pack_star_roam_weapon', 51600),
+    ('suit_cloud_bear', 13480),
+    ('honor_medal_x2', 200),
+    ('honor_medal_x30', 3000),
+    ('honor_medal_x90', 9000),
+    ('lucky_coin_x2', 200),
+    ('lucky_coin_x30', 3000),
+    ('lucky_coin_x90', 9000),
+    ('pack_dragon_palace', 80000),
+    ('suit_dune_song', 10200),
+    ('suit_jester_face', 20000)
+)
+UPDATE merchant_products mp
+SET
+  price_amount = p.amount,
+  cost_amount = p.amount,
+  updated_at = NOW()
+FROM prices p
+WHERE mp.sku = p.sku
+  AND mp.deleted_at IS NULL;