6648d4b9d6
The global Alt+Left/Right keydown handler called preventDefault() on the browser's Back/Forward shortcut for the whole document — the most likely cause of "can't switch workflow" after the previous deploy, and a poor default regardless. Remove the handler (stepToSnapshot remains for a future conflict-free binding or a timeline button). Also wrap the post-switch baseline seeding in try/catch so any failure there can never propagate into ComfyUI's openWorkflow action and block a workflow switch. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>