No File Preview Support

[blinkerbit]

Issue Description

No preview support for common file types (images, PDFs, etc.), requiring users to download files to see their content.

Impact

• Poor user experience
• Unnecessary downloads
• No quick content preview

Current Behavior

• No file previews
• Users must download files to view content
• No inline content display

Proposed Features

• Image previews (thumbnails)
• PDF previews
• Text file previews
• Markdown rendering
• Video/audio previews

Priority

Medium (UX)

Labels

feature, preview, ux