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

perf: 720x1280@24fps + chrome-headless-shell + each clip on own track + system fonts (target render 5-8min)

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