dispose method

void dispose()

Releases all native renderer resources and detaches the finalizer.

Implementation

void dispose() {
  if (_disposed) return;
  _disposed = true;
  // Detach from finalizer before manual destruction (prevent double-free)
  _finalizer.detach(_finalizerKey);
  // Invalidate before destroying native handle so any stragglers (clipped
  // views, etc.) fail fast instead of touching freed memory.
  _invalidateBorrowedBuffers();
  _bindings.destroyRenderer(_handle);
}