feat: init Dee Video Studio — HyperFrames cloud render for testimonial/teaser/trailer videos

- 4 workflows: testimonial (75s), teaser (30s), trailer (60s), community (60s)
- 6 royalty-free Pixabay music tracks auto-selected by workflow
- WebSocket real-time render progress
- Dark-mode Studio UI with drag-drop upload
- HuggingFace Docker Space ready (port 7860)

requirements.txt

@@ -0,0 +1,3 @@
+requests==2.31.0
+pydub==0.25.1
+numpy==1.26.4