method !wire-input() {
    $!input.on-submit.tap: -> $text {
        if $!editing-msg-id.defined {
            # Ignore empty-edit submits — treat as no-op rather than
            # deleting the message's content. Cancel via Esc.
            self!commit-edit($text) if $text.chars > 0;
        } elsif !$!streaming && $text.chars > 0 && self!current-conversation.defined {
            self!send-user-message($text);
            $!input.clear;
        }
    };

    # Esc on the input cancels an in-flight edit (without clearing
    $!input.on-key: 'esc', -> $ {
        self!cancel-edit if $!editing-msg-id.defined;
    }, :description('Cancel message edit');
}