Method cleanup_completed_promises

src/fl/net/http/fetch.cpp.hpp:494–503

}

void FetchManager::cleanup_completed_promises() {
    // Rebuild vector without completed promises
    fl::vector<fl::task::Promise<Response>> active_promises;
    for (const auto& promise : mActivePromises) {
        if (promise.valid() && !promise.is_completed()) {
            active_promises.push_back(promise);
        }
    }
    mActivePromises = fl::move(active_promises);
}

// WASM promise management methods removed - no longer needed
// Promises are now handled directly via shared_ptr capture in callbacks