/*
* Copyright 2026 Teenygrad
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/// Residual bottleneck block.
/// C2PSA block: cross-stage partial block with position-sensitive attention.
/// C3k2 block: CSP bottleneck variant used throughout the backbone/neck.
/// Channel-wise concatenation of feature maps.
/// Conv + BatchNorm + activation block.
/// Detection head block(s).
/// Spatial Pyramid Pooling - Fast block.
/// Nearest-neighbor upsampling block.