kiosk-v0-design: Echo-Dot kiosk architect memo

[webdevtodayjason]

Summary

Architect design memo for kiosk v0 (task 021). Voice-first Echo-Dot
form factor: Pi 5 + 7" 1024x600 touchscreen, mic/speaker/camera.

Delivers ops/projects/kiosk-v0-design.md (170 lines, under the
180-line cap) covering:

• State machine (idle/listening/thinking/speaking) with timeouts
• 1024x600 screen layout (60/20/20 split, AEVP orb iframe)
• Push-to-talk v1 contract (wake-word deferred to cycle-22)
• voice-in / voice-out ChannelRegistry entries (Groq STT, ElevenLabs TTS)
• 5-step touchscreen onboarding wireframe
• kiosk: ArgentConfig block
• Candidate file areas for engineer implementation slice
• Cycle-22 sub-slices (wake-word, camera, offline STT, orb embed, onboarding)
• kiosk-v0 acceptance criteria

Validation

• Design-only slice; architect contract forbids builds/tests.
• wc -l ops/projects/kiosk-v0-design.md = 170, within inbox cap.
• No src/*, package.json, or runtime files touched.

Test plan

• Operator reviews 5-step onboarding wireframe (§6)
• Operator confirms 6s p50 PTT budget in §10.3 is realistic
• Threadmaster dispatches kiosk-v0-impl engineer slice next cycle

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