feat(media-supply): resource cache sync and order flow refinements

Add a resource cache sync entrypoint (RunMediaResourceSyncOnce) driven
by the new scheduler job, and rework the backlink/sync worker around it.
Tune the meijiequan client and slow the default backlink sync interval
from 10m to 30m to reduce upstream pressure.

Trim unused public/transport surface (handler + router + swagger) and
simplify admin-web order management and ops-web media-supply views,
dropping stale shared-types fields.

packages/shared-types/src/index.ts

@@ -652,7 +652,6 @@ export interface MediaSupplyOrderDetail {
   title: string
   remark?: string | null
   order_brand?: string | null
-  external_order_id?: string | null
   external_order_code?: string | null
   supplier_status?: string | null
   cost_total_cents: number
@@ -684,17 +683,6 @@ export interface ListMediaSupplyOrdersResponse {
   page_size: number
 }
 
-export interface SyncMediaSupplyBacklinksResponse {
-  published_fetched: number
-  pending_fetched: number
-  problem_fetched: number
-  orders_checked: number
-  orders_updated: number
-  order_codes_updated: number
-  refunded_orders: number
-  links_updated: number
-}
-
 export interface MediaSupplyWalletStatus {
   tenant_id: number
   user_id: number