chore: establish YCode replication baseline and TODO

scripts/rea/probe-model-select-open-settings-20261016.json

@@ -0,0 +1,10 @@
+{
+  "include_fonts": false,
+  "include_message_content": false,
+  "actions": [
+    { "kind": "click", "step_id": "open-home-model-picker", "selector": ".cr-model-selector__trigger", "frames": 0 },
+    { "kind": "wait", "step_id": "home-model-picker-ready", "duration_ms": 180, "frames": 1 },
+    { "kind": "click", "step_id": "open-custom-model-settings", "selector": ".cr-model-selector__menu > .cr-menu-item:last-child", "frames": 0 },
+    { "kind": "wait", "step_id": "custom-model-settings-opening", "duration_ms": 300, "frames": 0 }
+  ]
+}