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.

apps/ops-web/src/views/MediaSupplyOpsView.vue

@@ -461,7 +461,7 @@ async function queueSync(): Promise<void> {
   syncLoading.value = true
   try {
     await opsMediaSupplyApi.queueSync(MODEL_ID_AUTHORITY_NEWS)
-    message.success('同步任务已提交')
+    message.success('调度任务已提交')
   } catch (error) {
     showOpsError(error)
   } finally {