docs: log Phase 2 render + Phase 3.1/3.2 milestones

Record the operator-approved first render and the verified grade + true-peak
limiter results (TP -1.7/-2.7/-2.8 dBFS, I -16.3 LUFS) with commit references.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bg76sLc43Wc3j5ZcLkboYR

docs/cinematic-highlight-poc-plan.md

@@ -93,6 +93,10 @@ Ranked from the first render's evidence:
 - 2026-07-21: Phase 1 committed (a95d1fa). **Phase 2 up to approval gate:** localpoc profile added, DJI source
   processed → candidates + category, grounded 3-highlight director plan authored & pre-validated.
   STOPPED — awaiting explicit render approval for dji_21230510013241_0091_d.
+- 2026-07-21: **Phase 2 rendered** (operator-approved) — first full local source→final highlight reel.
+- 2026-07-22: **Phase 3.1 + 3.2 done & verified.** Filmic grade + true-peak limiter. Re-render measured TP
+  -1.7/-2.7/-2.8 dBFS (was 0.0 clipping), I -16.3 LUFS; mvn verify 245/0/0/0. Committed 588c652 (profile),
+  0fcfca9 (render quality). Next: P3.3 overlay styling / P3.4 real CV / beat-specific grade.
 
 ## Deferred (until output-quality gate passes)
 Production hardening: Spring Security/OIDC, PostgreSQL/Testcontainers, containers/K8s, CI/CD, distributed