Release Notes:
v0.2.0 - Major UI Redesign

• Redesigned popup with status-first layout - see retraction status at a glance
• Added PubMed support
• Improved DOI display with truncation and copy button
• Expandable notice cards showing retraction details
• Better contrast and readability
• "Check anyway" button for unsupported sites
• Data freshness indicator showing when database was last updated