Merge-time fix for #674: the mobile-handlers.js @fileoverview still
gave the old 300 ms and 100 px limits (now 500 ms and 50 px), and the
Mobile Guide now says a visible text selection pauses the swipe and a
terminal wider than the screen pans instead of switching.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>