feat: TTS timestamps + duration probe, gallery/media tile UI updates, project films routing

feat: rewrite landing page for hackathon demo

feat: landing page at /, studio at /studio, ShadCN token fix

feat: datasets registry, sidebar route sync, Generate pre-fill from character page

Cleanup env/config, add LoRA training page, consolidate systemd service

Projects pipeline: shot subtitles, scene settings, character rename, gitignore cleanup

Add Studio generation and project UI

Add AMD gallery training status UI

Add AI Toolkit training setup and live job progress

Add gallery listing and media endpoints