feat(media-supply): add media resource supply marketplace

Introduce an end-to-end media-supply feature: tenant-side resource sync
service/worker backed by a Meijiequan supplier client, ops-side management
APIs, and admin/ops web views for resources, orders, favorites and
submission. Adds a shared digitocr helper, MediaSupply config blocks for
tenant and ops, shared types, and migrations for supplier media resources,
price overrides, customer visibility and order refunds.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

server/configs/ops-config.yaml

@@ -78,6 +78,30 @@ default_admin:
 admin_users:
   default_plan_code: free
 
+media_supply:
+  enabled: true
+  default_markup_percent: 50
+  minimum_markup_cents: 0
+  worker:
+    enabled: true
+    poll_interval: 5s
+    batch_size: 1
+    order_max_attempts: 3
+    sync_max_attempts: 2
+  meijiequan:
+    base_url: http://www.meijiequan.com
+    user_id: ""
+    username: "17788409108"
+    password: "happy114"
+    session_ttl: 4h
+    request_timeout: 30s
+    sync_page_delay: 800ms
+    sync_page_size: 100
+    max_sync_pages: 200
+    search_options_ttl: 6h
+    upstream_lock_ttl: 30s
+    upstream_min_interval: 2s
+
 ip_region:
   # 可选外部 xdb 路径；文件不存在时自动使用二进制 embed 内置数据。
   v4_xdb_path: ""