DataTable Performance Tracking

v1.0.4: Extreme Optimization (Restored)

Data: 10,000 items, 10 columns.
Scroll Test: 100 scrolls.
Results:
- refreshTime (total): ~103ms (for 100 frames)
- averageRefreshTime: 1.03ms per frame
Optimizations:
- Full Event Delegation (MouseDown/MouseOver/DblClick).
- CSS Grid Layout (Removed thousands of per-cell $style bindings).
- Synchronous Scroll Handling (Removed rAF to ensure zero-latency補位).
- Native Context Access (_ref) for zero-cost item resolution.
- Targeted Row Refresh for Paste/Edit operations.
- Manual DOM Spacers (Removed $if to prevent scroll anchoring jumps).

Data: 10,000 items, 1 column.
Scroll Test: 100 scrolls (20,000px total).
Results:
- refreshCount: 101
- refreshTime (total): ~45.7ms
- averageRefreshTime: 0.45ms