feat(finale): full ceremony UI — admin console, jury phases+notes, deliberation flow, audience voting, big-screen view

- Admin Ceremony tab: phase driver with real server timers + overtime, run
  order with category grouping + send-to-screens, audience windows + QR
  dialog, override slides, timing log, results reveal builder/stepper
- Admin Deliberation tab: per-category session creation from the round's
  jury group, open/close voting, tally/runoff/override/finalize
- Jury live page: ON_DECK/PRESENTING/QA/SCORING aware, autosaved notes,
  vote comments; LiveVotingForm fixed (criteria score >10 rejection bug,
  permanent lock-out after submit) and made revisable
- Jury deliberation page: identityless submitVote, review-before-rank
  context (finale scores editable, ceremony notes, docs link)
- Jury nav: Live Ceremony + per-category Deliberation links
- Public: rebuilt QR audience voting page (anonymous-safe, favorite-pick
  windows, change-until-close), new /live/ceremony/[roundId] projector view
  with animated reveal, confetti, audience QR slide, override slides

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -63,3 +63,8 @@ build-output.txt
 private/
 public/build-id.json
 .remember/
+
+# Local tooling + session screenshots
+.claude/
+.serena/
+/*.png