live-demolisted

# live-demo Everything between "the app's smoke test is green" and "a stranger on the website is driving the robot." This skill owns the demo architecture that robium.org/demos/nav-trial runs in production: a control page whose Start/Stop buttons manage private, per-visitor simulator instances on Cloud Run, a session gateway inside the app container, and a viewer handoff. Every command, flag, and gotcha here was verified live (2026-07-13, nav-trial demo) — this is a distillation of a real deployment, not a design sketch. ## When to use this skill - Publishing any robium app as an interactive web demo, and every design choice inside that: flow shape, page anatomy, instance lifecycle, visualizer, budget, and the Cloud Run deployment. - Debugging a deployed demo (instance won't boot, viewer can't connect, status endpoint misroutes). - Cross-references — go to the sibling skill instead when the question is: - foxglove_bridge setup, layouts, or MCAP for *development* use → `foxglove` (this skill consumes its bridge; the demo-specific parts — session gateway, deep-link handoff — live here). - Container/compose patterns for the app itself → `integration`. - Whether the app is *done* enough to demo → `testing` (smoke test green is this skill's entry bar). - Env reproducibility of the app → `environments`. ## Key directives - **Delegation posture: embed.** The demo architecture (gateway contract, Cloud Run tuning for sims, viewer decision table) exists