Fix unreadable user markdown colors and truncate long texts in deletion dialogs (#17555)

* webui: limit conversation name length in dialogs

* webui: fix unreadable colors on links and table cell hover in user markdown

* webui: keep table borders visible in user markdown

* webui: updating unified exports

* Update tools/server/webui/src/lib/components/app/chat/ChatAttachments/ChatAttachmentThumbnailFile.svelte

Co-authored-by: Aleksander Grygier <aleksander.grygier@gmail.com>

* chore: update webui build output

* chore: update webui build output

* chore: update webui build output

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Co-authored-by: Aleksander Grygier <aleksander.grygier@gmail.com>

tools/server/webui/src/lib/utils/file-preview.ts

@@ -34,12 +34,3 @@ export function getFileTypeLabel(input: string | undefined): string {
 	// Handle AttachmentType or other plain strings
 	return input.toUpperCase();
 }
-
-/**
- * Truncates text content for preview display
- * @param content - The text content to truncate
- * @returns Truncated content with ellipsis if needed
- */
-export function getPreviewText(content: string): string {
-	return content.length > 150 ? content.substring(0, 150) + '...' : content;
-}