round 4: app-shell quiz screen at <=700px — #step-body is the only scroller, #btn-next/#panel become the static bottom cluster; revert FR .opt override (keep 972f3a7); + capture/verify/pixdiff/offlan audit tooling and before/after evidence; closes QUIZ-APPSHELL-FIX.md

audit/appshell-geo-check.json

@@ -0,0 +1,13 @@
+{
+  "http_code": "200",
+  "has_marker": true,
+  "css_appshell_block": true,
+  "css_stepbody_flex": true,
+  "css_btn_next_static": true,
+  "css_panel_static": true,
+  "css_fr_hack_gone": true,
+  "css_size": 12753,
+  "checked_at": "2026-10-09T14:48:57Z",
+  "vantage": "trouble@100.96.20.61 (Midhurst, off-LAN)",
+  "all_ok": true
+}