Under the hood
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The footer can now claim a keypress before the prompt input box handles it
What
The main prompt-input component (the box where you type your message) now receives a footerOwnsKeyOf callback. When a keybinding is pressed, the input's keybinding wrapper checks this callback first, and if the footer reports it already owns that key, the input's own chat keybinding handler is skipped.
Why
This avoids conflicts where a key press meant for something shown in the footer would otherwise also trigger an action in the prompt input box.
Names in the bundlefooterOwnsKeyOf
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say what footer element or keys this applies to.