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4grayandClaude Opus 4.8
a4f3a5546f
The timeline programme block is `tabindex=0 role=button` and emits `blockClick` on both click and keydown.enter. The nested watch/info buttons stop the *click* from bubbling, but not the *keydown* — so a keyboard user who tabs to the info button on a past catch-up programme and presses Enter fired the block's Enter handler (→ timeshift playback) before the button's own action opened the dialog. Flagged by Codex. Route the block's Enter through `onBlockActivate`, which emits only when the block itself is the event target (`event.target === event.currentTarget`), mirroring the mouse `stopPropagation()`. Enter bubbled up from a nested button is ignored, so keyboard users get the button's action. Test: asserts Enter on the block activates, Enter bubbled from a child does not. ui-epg 83 green, lint clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>