Add comprehensive blockchain viewer with:
- BlockchainViewer component: Display blocks in expandable cards
- Hash visualization: Show SHA-256 hashes for each block
- Chain verification: Visual integrity status and verification button
- Block details: Expand to see full block information
- Index, timestamp, previous hash, block hash
- Encrypted vote data, transaction ID
- Digital signatures
- Election selector: View blockchain for different elections
- Mock data: Demo blockchain included for testing
- Responsive design: Works on mobile and desktop
UI Features:
✓ Block expansion/collapse with icon indicators
✓ Genesis block highlighted with ⚡ icon
✓ Vote blocks marked with 🔒 icon
✓ Chain link visual indicators
✓ Hash truncation with full display on expand
✓ Status indicators: Chain valid/invalid
✓ Security information panel
✓ Statistics: Total blocks, votes, integrity status
Integration:
✓ Fetch elections list from API
✓ Fetch blockchain state for selected election
✓ Verify blockchain integrity
✓ Handle empty blockchain state
✓ Error handling with user feedback
✓ Loading states during API calls
Routes:
✓ /dashboard/blockchain - Main blockchain viewer
✓ Added to sidebar navigation
✓ 13 total routes now (added 1 new)
Frontend Build:
✓ No TypeScript errors
✓ Zero unused imports
✓ Production build successful
✓ All routes prerendered
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
