feat(ci): add CARGO_BUILD_JOBS and NVCC_THREADS to build matrix

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/build-release.yml

@@ -19,6 +19,8 @@ jobs:
             cuda_home: /usr/local/cuda-13.0
             cargo_features: "cuda cudnn flash-attn nccl"
             compute_caps: "120"
+            build_jobs: 8
+            nvcc_threads: 4
     runs-on: ${{ matrix.runner }}
     steps:
       - uses: actions/checkout@v4
@@ -53,6 +55,8 @@ jobs:
           CUDA_HOME: ${{ matrix.cuda_home }}
           CARGO_FEATURES: ${{ matrix.cargo_features }}
           CUDA_COMPUTE_CAP: ${{ matrix.compute_caps }}
+          CARGO_BUILD_JOBS: ${{ matrix.build_jobs }}
+          NVCC_THREADS: ${{ matrix.nvcc_threads }}
           SRC_DIR: src
 
       - name: Upload binary artifact