chore(tests): prune obsolete probes and define truthful offline test gates

scripts/rea/probe-todo13-personalization-open-custom-prompt.json

@@ -1,11 +0,0 @@
-{
-  "include_fonts": false,
-  "include_message_content": false,
-  "track_selectors": [
-    ".settings-modal__panel",
-    "#settings-custom-prompt .general-settings-panel__section-action button"
-  ],
-  "actions": [
-    { "kind": "click", "step_id": "open-custom-prompt-editor-for-layout", "selector": "#settings-custom-prompt .general-settings-panel__section-action button", "index": 0, "frames": 1 }
-  ]
-}