ci: simplify to ubuntu-only test matrix

Author: qectorlab

.github/workflows/ci.yml

@@ -11,28 +11,17 @@ env:
 
 jobs:
   test:
-    name: Test (${{ matrix.os }}, py${{ matrix.python }})
-    runs-on: ${{ matrix.os }}
+    name: Test (ubuntu, py${{ matrix.python }})
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
         python: ["3.9", "3.10", "3.11", "3.12"]
-        include:
-          - os: ubuntu-latest
-            target: x86_64-unknown-linux-gnu
-          - os: macos-latest
-            target: universal2-apple-darwin
-          - os: windows-latest
-            target: x86_64-pc-windows-msvc
     steps:
       - uses: actions/checkout@v4
-      
+
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
-        with:
-          target: ${{ matrix.target }}
-          components: rustfmt, clippy
 
       - name: Set up Python ${{ matrix.python }}
         uses: actions/setup-python@v5
@@ -52,62 +41,22 @@ jobs:
       - name: Install maturin
         run: pip install maturin
 
-      - name: Build (debug)
-        run: maturin develop --no-default-features
-        env:
-          RUSTFLAGS: -C target-cpu=native
+      - name: Build (release, no default features)
+        run: maturin develop --release --no-default-features
 
       - name: Run tests
         run: python -m pytest python/tests/ -q --tb=short -x
         timeout-minutes: 30
 
-  test-gpu:
-    name: GPU Features Test (optional)
-    runs-on: ubuntu-latest
-    continue-on-error: true
-    steps:
-      - uses: actions/checkout@v4
-      
-      - name: Install Rust
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          components: rustfmt, clippy
-
-      - name: Set up Python 3.12
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.12"
-
-      - name: Install maturin
-        run: pip install maturin
-
-      - name: Build with CUDA feature
-        run: maturin develop --features cuda
-        env:
-          RUSTFLAGS: -C target-cpu=native
-
-      - name: Test CUDA available
-        run: python -c "import qector_decoder_v3 as qd; print('CUDA:', qd.cuda_is_available())"
-
-      - name: Build with OpenCL feature
-        run: maturin develop --features opencl
-        env:
-          RUSTFLAGS: -C target-cpu=native
-
-      - name: Test OpenCL available
-        run: python -c "import qector_decoder_v3 as qd; print('OpenCL:', qd.opencl_is_available())"
-
   test-full:
     name: Full Features Test (optional)
     runs-on: ubuntu-latest
     continue-on-error: true
     steps:
       - uses: actions/checkout@v4
-      
+
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
-        with:
-          components: rustfmt, clippy
 
       - name: Set up Python 3.12
         uses: actions/setup-python@v5
@@ -118,9 +67,7 @@ jobs:
         run: pip install maturin
 
       - name: Build with full features
-        run: maturin develop --features full
-        env:
-          RUSTFLAGS: -C target-cpu=native
+        run: maturin develop --release --features full
 
       - name: Test gRPC/MCP server
         run: |
@@ -132,7 +79,7 @@ jobs:
     continue-on-error: true
     steps:
       - uses: actions/checkout@v4
-      
+
       - name: Set up Python 3.12
         uses: actions/setup-python@v5
         with:
@@ -153,7 +100,7 @@ jobs:
     continue-on-error: true
     steps:
       - uses: actions/checkout@v4
-      
+
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
         with: