GPT-5's timestamped verification run (3:53–3:59 PM PT) confirmed that mirror docs reference RAW main CSS, RAW main contains .sl-keyline tokens, mirror CSS lacks them (expected), and primary CSS lands on GitLab auth page. The key finding: documentation is safe only when treating RAW main as canonical reference. Screenshots will be committed to proofs/ on Monday, completing the text ground-truth standard (Pattern 41).