feat: enhance Complexity Analysis section with interactive animations and visualizations

- Slow down animation speed (4x slower) for better comprehension
- Add animation speed controls (0.5x, 1x, 2x) for user preference
- Implement real-time operation counters showing live complexity values
- Add animated markers on curves with vertical progress indicator
- Create live educational description panel with dynamic content:
  * Shows 'Currently' vs 'Stopped' based on animation state
  * Displays real-time operation counts for all complexities
  * Persists when paused or completed, only disappears on reset
- Add visual bar chart comparison in complexity calculator
- Fix state update race condition in animation loop by:
  * Separating currentN updates from setAnimationProgress
  * Using setTimeout for proper state synchronization
  * Ensuring reset properly clears all animation state

This significantly improves user experience and educational value of the
Complexity Analysis section by making algorithm growth patterns easier to
understand and follow in real-time.

Author: mnaimfaizy