fix(build): add 7zz binary download to quality-check step

- Add official 7zz binary download step before running pytest in quality-check job
- Use same download methodology as CI workflow for consistency
- Set PY7ZZ_BINARY environment variable for test execution
- Add binary verification to ensure proper installation

This resolves pytest failures in build workflow quality-check step
due to missing 7zz binary dependency.

Author: RxChi1d

.github/workflows/build.yml

@@ -31,6 +31,41 @@ jobs:
         uv sync --dev
         uv pip install -e .
     
+    - name: Download 7zz binary for testing
+      run: |
+        # Download official 7zz binary (same as build workflow)
+        VERSION="25.00"
+        VERSION_FOR_ASSET=$(echo "$VERSION" | sed 's/\.//g')  # 25.00 -> 2500
+        ASSET_NAME="7z${VERSION_FOR_ASSET}-linux-x64.tar.xz"
+        DOWNLOAD_URL="https://github.com/ip7z/7zip/releases/download/${VERSION}/${ASSET_NAME}"
+        
+        echo "Downloading 7zz from: $DOWNLOAD_URL"
+        TEMP_DIR=$(mktemp -d)
+        curl -L -o "${TEMP_DIR}/${ASSET_NAME}" "$DOWNLOAD_URL"
+        cd "${TEMP_DIR}"
+        tar -xf "${ASSET_NAME}"
+        
+        # Find and install the 7zz binary
+        BINARY_PATH=$(find . -name "7zz" -type f | head -1)
+        if [ -n "$BINARY_PATH" ]; then
+          sudo cp "$BINARY_PATH" /usr/local/bin/7zz
+          sudo chmod +x /usr/local/bin/7zz
+          echo "7zz binary installed successfully"
+          
+          # Set environment variable for tests
+          echo "PY7ZZ_BINARY=/usr/local/bin/7zz" >> $GITHUB_ENV
+          
+          # Verify installation
+          /usr/local/bin/7zz --help > /dev/null && echo "7zz verification passed" || exit 1
+        else
+          echo "Error: 7zz binary not found in downloaded package"
+          exit 1
+        fi
+        
+        # Clean up
+        cd "$GITHUB_WORKSPACE"
+        rm -rf "${TEMP_DIR}"
+    
     - name: Run quality checks
       run: |
         uv run ruff check . --output-format=github