Host immutable Orrery graph publications and a React viewer #2

Track the Next.js runs app, authenticated immutable publication API, isolated Vercel Blob environments, explicit environment provisioning, public Orrery viewer and deep links, independent unit/HTTP integration tests, and large synthetic graph qualification.

Implementation: #1. Collector authorization dependency: PolicyEngine/calibration-diagnostics#208. UK producer integration: PolicyEngine/microcosm#1148. Production API qualification remains pending deployment of the collector endpoint; visual confirmation requires manual inspection.