Fixed Flutter Rendering Issue

Solved a tricky Flutter rendering issue where ListView items were rebuilding unnecessarily.

The fix was to use const constructors properly:

// Before (causing unnecessary rebuilds)
ListView.builder(
  itemBuilder: (context, index) {
    return ProductCard(product: products[index]);
  },
)

// After (optimized)
ListView.builder(
  itemBuilder: (context, index) {
    return ProductCard(
      key: ValueKey(products[index].id),
      product: products[index],
    );
  },
)

Adding ValueKey prevents Flutter from recreating widgets when the data hasn’t changed. Performance improved by ~40%.