feat: enhance content preview with truncation and better UX #3
Description
The current content preview shows the full article content which is not really a "preview" - it displays complete text with messy URL encoding and no interactive features. We should implement content truncation to limit preview to 200 characters, separate metadata from content for better visual hierarchy, add expand/collapse functionality and "view full content" button, and fix the URL encoding display issues. This will improve user experience by providing actual previews instead of full content dumps.