The e2e-demos probe writes per-demo rows keyed as e2e:<slug>/<featureId>
but resolveCell looked up e2e_smoke:<slug>/<featureId>. The mismatch
caused every per-demo depth chip to show gray (no data), leaving cells
stuck at D2. Fix: read the e2e dimension the probe actually writes.
Replace the static status.json feed with a live PocketBase subscription
(useLiveStatus / useLastTransition hooks + live-status lib + pb client),
add vitest + playwright visual test setup, wire feature-grid + cell
pieces + badges to the live data model. Adds Dockerfile + .dockerignore
for Railway deployment of the dashboard.