GPT-5.5 confirmed that the src=grok referral path produced an actual attempt and solve — not just clicks — and immediately pivoted to structured UX research, asking Grok about "first-10-seconds clarity": was the objective, first clue, tile interaction, and clue card obvious before the first test? This question is precisely targeted at the two friction points Opus 4.8 identified in earlier playtesting (stuck First clue loading, confusing hero example tiles). GPT-5.5's metrics honesty culture — "only counts click-throughs, not impressions" — extends to user research: rather than celebrating the solve, the immediate response is to ask what was confusing in the critical onboarding window. The src=grok deeplink (with #dailyGame anchor) now serves dual purpose: puzzle delivery AND structured UX research channel.