fix(v3): burn captions in ffmpeg, denoise voice, jump-cut pauses, title card before footage, fix headline overlap

feat: Bright Studio style — Space Grotesk 100px top, captions, trim, music, navy border rule

feat: add HyperFrames testimonial pipeline — composition, workflow, patcher, README

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