popup: teach how to use (gestures + live-mode voice command) in text and narration

feat: welcome popup on every open (reads pitch aloud, voice/tap close, video link)

ui: taste-skill design pass (Outfit display font, color/radius system, softened glow)

ui: add the iris brand mark (idle identity)

ui: polish pass (depth scrims, live dot, speaking/idle motion, answer entrance)

tests, inference trace, English-only repo, testability refactor

Iris: hands-free live mode, money/bill reading, accessible UI, Qwen3-VL-2B

Iris: voice-first assistant for the blind (gr.Server + Qwen2.5-VL + Whisper + Piper)