Adds docs/live-ui-spec.md — how to make the demo-backed graph REAL by
materializing it from the live Mongo collections the agent already writes
(pods, engineer_states, observations, collisions, interventions, outcomes).
Extends docs/graph.md; spec only, no implementation.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
sb-iam