Ask AI — mobile-flow harness

Replicates the mobile app's /v1/instruct flow so you can test the backend (vision + STT + LLM + structured output + TTS playback) without launching Expo. Multi-turn clarify replies and server-rendered Cantonese spokenText are wired up.

Compose
…
or
Response

Add input on the left and press Ask AI. The Instruction response (clarify / propose / unknown) will render here and auto-play the Cantonese spokenText through your server TTS.