docs(plan): on-demand site detail page parsing (HHClub details.php)

Co-Authored-By: Claude Fable 5.1 <[email protected]>

packages/contracts/test/db-sync.test.ts

@@ -58,7 +58,7 @@ const ROWS: Record<string, { row: Obj; dbOnly?: string[]; apiOnly?: string[] }>
   DownloadTask: { row: C.DownloadTask },
   DownloaderInstance: { row: C.DownloaderInstance },
   ExternalIdentity: { row: C.ExternalIdentity, apiOnly: ["mediaEntityTitle"] },
-  FeedSource: { row: C.FeedSource, apiOnly: ["possibleGap"] },
+  FeedSource: { row: C.FeedSource, apiOnly: ["possibleGap", "warnings"] },
   IdentityRevision: { row: C.IdentityRevision },
   LibraryRoot: { row: C.LibraryRoot },
   MediaAsset: { row: C.MediaAsset },