Process the next bounded pending/flagged acceptance batch

Processes at most 50 rows in one explicitly non-atomic request. Despite the compatibility route name, this does not approve the entire queue atomically, bypass deterministic proof, or immediately publish listings. Start a stable keyset pass without a cursor, then send each opaque next_cursor unchanged while has_more=true. The order is created_at DESC, id ASC; do not substitute offsets or restart at the first page because semantically accepted rows remain pending until current-revision proof succeeds and could otherwise be processed again. remaining is the count of older unprocessed rows in the current pass, while retained_review_queue_total is the full queue and may not shrink during the pass. Rows added ahead of the cursor are left for a later pass. Each selected row retains its own evidence comparison and exception boundary. After an ambiguous response, refresh the queue and inspect its audit trail rather than blindly retrying the request.