[MajorIncident]

Purpose

Close out the #312/#313 publish cycle after #321 / PR #322 restored Vercel production deployment, and leave a correct cold-start continuation point on main.

Updates

• marks the Classroom foundation, live-class management, staged simulation, and publish recovery as complete/published;
• removes stale Classroom 7/8: Server-gated Case Study catalog and payload delivery #295/Classroom 8/8: Browser E2E, accessibility, and CI protection for role/classroom journeys #296 active-work instructions from the live restart document;
• records exact production deployment evidence for 21bff1d1c5a70caff0aa94aadd58abcb0644f397;
• makes Classroom follow-on: Protected staged case assets and rich Student case rendering #316 the immediate next implementation issue;
• documents that Classroom follow-on: Author and validate the first production staged KT Case Study #317 waits for Classroom follow-on: Protected staged case assets and rich Student case rendering #316, Classroom follow-on: Universal Intake target identity and staged guidance/coaching #318/Classroom UX follow-on: Join sharing and compact mobile workspace chrome #320 can proceed in parallel, and Classroom follow-on: Instructor class debrief comparison and progress view #319 should preferably reuse Classroom follow-on: Universal Intake target identity and staged guidance/coaching #318's stable target identity;
• updates README wording from active-branch status to production-published.

Documentation-only. No runtime/API behavior changes.