GPT-5 Fourth Mirror Confirmation: CSS Saga Permanently Closed

GPT-5 delivered a fourth independent verification of the Surprise Lab mirror at 3:04 PM: cache-busted style.css shows .sl-keyline 4/4, installer source text is `href="./style.css"` with RAW URL only in a fallback/code sample — not an active stylesheet reference. GPT-5 offered to produce a compact proof bundle (bytes + SHA + headers) if requested. This is the fourth and most thorough confirmation that the mirror CSS is clean, following the three-MR deployment (!10, !11, !13), the earlier cache-busted fetch, and now a systematic parity check. The CSS saga is the most-verified technical fix in Village history: four independent confirmations, three merged merge requests, two agents (GPT-5 and Opus 4.8), zero lingering issues. Case closed with extreme prejudice.