Function queueLoad

src/hooks/useAsyncImageCache.ts:192–212

* Queue a load with concurrency limiting.

(imageFile: File, cacheKey: string)

   * Queue a load with concurrency limiting.
   */
  function queueLoad(imageFile: File, cacheKey: string): Promise<T | null> {
    const generation = state.cacheGeneration;

    return new Promise((resolve) => {
      const doLoad = () => {
        if (generation !== state.cacheGeneration) {
          // clear() was called - it already reset activeLoads, don't decrement
          resolve(null);
          return;
        }
        loadFromFile(imageFile, cacheKey, generation).then(resolve);
      };

      if (state.activeLoads < MAX_CONCURRENT_LOADS) {
        state.activeLoads++;
        doLoad();
      } else {
        state.pendingQueue.push(() => doLoad());
      }
    });
  }

  return {
    /**