Improve release artifact naming for all platforms

Changed naming format from libasyncprocess-{arch}-{OS}.a to
libasyncprocess.{os}.{arch}.a for better consistency:

- libasyncprocess.darwin.aarch64.a
- libasyncprocess.darwin.x86_64.a
- libasyncprocess.linux.aarch64.a
- libasyncprocess.linux.x86_64.a

Also added verbose logging to the release preparation step to show:
- All found .a files in artifacts
- Each file being copied and its destination
- Final list of release files

This ensures all 4 platform binaries are uniquely named and uploaded.

Author: Claude

.github/workflows/build.yml

@@ -200,17 +200,25 @@ jobs:
     - name: Prepare release files
       run: |
         mkdir -p release-files
+        echo "Finding all .a files in artifacts..."
+        find artifacts -name "*.a" -type f
+        echo ""
+        echo "Creating uniquely named release files..."
         # Find and rename all library files with their arch and os
         find artifacts -name "*.a" -type f | while read file; do
           # Extract the directory structure to get arch and os
           dir=$(dirname "$file")
           arch=$(basename "$(dirname "$dir")")
           os=$(basename "$dir")
-          # Create a unique filename
-          cp "$file" "release-files/libasyncprocess-${arch}-${os}.a"
+          # Normalize OS name to lowercase for consistency
+          os_lower=$(echo "$os" | tr '[:upper:]' '[:lower:]')
+          # Create a unique filename: libasyncprocess.{os}.{arch}.a
+          output_name="libasyncprocess.${os_lower}.${arch}.a"
+          echo "  $file -> release-files/$output_name"
+          cp "$file" "release-files/$output_name"
         done
-        # List what we're uploading
-        echo "Release files:"
+        echo ""
+        echo "Release files ready for upload:"
         ls -lh release-files/
 
     - name: Create Release