Apply the backend-wiring changes beyond the UI uplift to ds8/dreamversev2-dev for review and refactoring. Source PR: hao-ai-lab/FastVideo#1854 Source range: 90d739a91892302edf37c4b23f807f402c83071d..8c5ee9b51cc3b75f4eba9cb3904fe08578c9dc9e The 28-file patch is identical to that source range. Co-authored-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: Aryan Kumar <aryan5v@users.noreply.github.com>