UX: No clear indicator if a file is hovered or selected in the @ menu (Desktop v1.12.1)

[KiKaraage]

Describe the bug

In the chat input box, when typing @ and the file picker popped up, there's no visible effects if I hover or navigate through the files listed. This happened on both light and dark mode.

Related component: MentionPopover - there's hover:bg-bgSubtle but it doesn't seem to display any changes

goose/ui/desktop/src/components/MentionPopover.tsx

Lines 541 to 578 in e9024b7

	<>
	{displayItems.length > 0 && (
	<div className="text-xs text-textSubtle mb-2 px-1">
	{displayItems.length} item{displayItems.length !== 1 ? 's' : ''} found
	</div>
	)}
	<div
	ref={listRef}
	className="space-y-1 overflow-y-auto flex-1 scrollbar-thin scrollbar-thumb-borderStandard scrollbar-track-transparent"
	style={{ maxHeight: '280px' }}
	>
	{displayItems.map((item, index) => (
	<div
	key={item.extra}
	onClick={() => handleItemClick(index)}
	className={`flex items-center gap-3 p-2 rounded-md cursor-pointer transition-colors ${
	index === selectedIndex
	? 'bg-bgProminent text-textProminentInverse'
	: 'hover:bg-bgSubtle'
	}`}
	>
	<div className="flex-shrink-0 text-textSubtle">
	<ItemIcon item={item} />
	</div>
	<div className="flex-1 min-w-0">
	<div className="text-sm truncate text-textStandard">{item.name}</div>
	<div className="text-xs text-textSubtle truncate">{item.extra}</div>
	</div>
	</div>
	))}
	{!isLoading && displayItems.length === 0 && query && (
	<div className="p-4 text-center text-textSubtle text-sm">
	No items found matching "{query}"
	</div>
	)}
	</div>
	</>

Screencast.From.2026-01-27.14-40-07.webm

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To Reproduce
Steps to reproduce the behavior:

1. Open Goose
2. Press @ to load list of files on a directory
3. Press Arrow Up/Arrow Down,
4. or hover any files in the list

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Expected behavior
It should have some different background color or overlay. Preferably lighter color overlay when hovering and stronger color overlay when selecting/navigating the list using arrow keys.

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Screenshots

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Please provide the following information

• OS & Arch: Linux - Bluefin based on Fedora 43, 64-bit
• Interface: UI/Desktop
• Version: v1.12.1 via ublue-os/tap/goose-linux Brew cask
• Not a model or extension issue

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Additional context: Screen recording when inspecting the UI

Screencast.From.2026-01-27.14-49-34.webm