iframe-checks.py

Overview

Two Activity checklist items that only mean anything inside an iframe.

1. single-step mode advances the real RX state machine leg by leg 2. the theme toggle still works when localStorage is unavailable

Both matter because a Discord Activity is a sandboxed iframe: storage can be refused there, and single-step is the mode people actually use to explain a DS-TWR round to someone else.

Both are driven in a same-origin iframe so the twin's own DOM can be read back. Storage is disabled through a Firefox profile pref rather than by faking it, so the page hits the real exception path its try/catch was written for.

Usage: iframe-checks.py [dist-dir] (default: ../dist)