feat: implement label management with sidebar, hacker theme, and Docker support

- Add label selection on chart with visual highlight (size 2x, color change)
- Implement keyboard delete handler (Delete/Backspace keys)
- Add comprehensive label management sidebar with:
  - Collapsible label annotations section
  - Search by timestamp
  - Filter by type (Break Up, Break Down, All)
  - Individual delete buttons
  - Count display
  - Click to select/highlight on chart
- Transform UI with hacker theme:
  - Matrix green (#00ff41) on dark background (#0a0e0a)
  - Monospace font (JetBrains Mono)
  - Glow effects on button hover and active states
  - Custom scrollbar styling
  - Terminal-inspired aesthetic
- Add Docker deployment:
  - Multi-stage Dockerfile with standalone output
  - docker-compose.yml with volume persistence
  - Non-root user (nextjs) for security
  - Health check endpoint integration
- Tailwind and CSS enhancements:
  - Custom colors (matrix, matrixDim, neonRed, etc.)
  - Glow box shadows and animations
  - Selection and scrollbar styling

.env.example

@@ -0,0 +1,3 @@
+NODE_ENV=production
+PORT=3000
+DATABASE_PATH=/app/data/candles.db