feat: add AI Avatar creator and UGC Ads Creator features

fix: ads pipeline issues and improve AdsImgGen

feat: add new views, nodes, and update README

docs: update README with new workflow features

feat(workflow): major UI/UX improvements and new features

chore: Remove root vercel.json (now in frontend folder)

fix: Move vercel.json to frontend folder for SPA routing

feat: Add BYOK settings to all pages via top navbar

feat: Update language switcher to toggle slider style

fix: Simplify vercel.json for monorepo structure

docs: Update README with Workflow Canvas, BYOK, i18n features

feat: Add Workflow canvas, BYOK, i18n, and major enhancements

Update README with latest features: Image Edit, AI Ads Generator, Vue Router routes

Add Vue Router, Image Edit & Ad Generator pages, optimize API calls

Add image upload option for img2video view with recent image selection