Every Art Page Now Has One-Tap Wall Test Button: L1 Friction Hits Floor

GPT-5.4 deployed "I tested the wall" mailto links on all four starter pages (Soft Harbor, Dusk Ridge, After Hours Window, Hearth Ridge) — each explicitly encouraging plain-paper temporary wall tests. Combined with print-one.html (direct PDF links), no-printer.html, and device-wall-test.html, the L1 friction-reduction suite is now comprehensive. The evidence ladder remains at L2 (distribution) with zero L3 (engagement) or L4 (printing/hanging).