fix(build): ship only the native library lib.py loads in the wheels

setup.py

@@ -117,23 +117,38 @@ def get_current_platform():
             return "linux_aarch64"
         return "linux_x86_64"
 
+def get_native_library_name(platform_name):
+    """Get the file name of the native library that src/c2pa/lib.py loads."""
+    if platform_name.endswith('windows-msvc'):
+        return "c2pa_c.dll"
+    elif platform_name.endswith('apple-darwin'):
+        return "libc2pa_c.dylib"
+    elif platform_name.endswith('linux-gnu'):
+        return "libc2pa_c.so"
+    else:
+        raise ValueError(f"Unknown platform: {platform_name}")
+
 def copy_platform_libraries(platform_name, clean_first=False):
-    """Copy libraries for a specific platform to the package libs directory.
+    """Copy the native library for a specific platform to the package libs directory.
+
+    Only the library loaded at runtime is copied. The c2pa-rs release archives
+    also contain static libraries, debug symbols and build metadata
+    (.lib, .rlib, .pdb, .dSYM, .d), which are not needed and would otherwise
+    end up in the wheel.
 
     Args:
         platform_name: The platform to copy libraries for
         clean_first: If True, remove existing files in PACKAGE_LIBS_DIR first
     """
     platform_dir = ARTIFACTS_DIR / platform_name
 
-    # Ensure the platform directory exists and contains files
+    # Ensure the platform directory exists and contains the library
     if not platform_dir.exists():
         raise ValueError(f"Platform directory not found: {platform_dir}")
 
-    # Get list of all files in the platform directory
-    platform_files = list(platform_dir.glob('*'))
-    if not platform_files:
-        raise ValueError(f"No files found in platform directory: {platform_dir}")
+    library_file = platform_dir / get_native_library_name(platform_name)
+    if not library_file.is_file():
+        raise ValueError(f"Native library not found: {library_file}")
 
     # Clean and recreate the package libs directory if requested
     if clean_first and PACKAGE_LIBS_DIR.exists():
@@ -142,10 +157,7 @@ def copy_platform_libraries(platform_name, clean_first=False):
     # Ensure the package libs directory exists
     PACKAGE_LIBS_DIR.mkdir(parents=True, exist_ok=True)
 
-    # Copy files from platform-specific directory to the package libs directory
-    for file in platform_files:
-        if file.is_file():
-            shutil.copy2(file, PACKAGE_LIBS_DIR / file.name)
+    shutil.copy2(library_file, PACKAGE_LIBS_DIR / library_file.name)
 
 def find_available_platforms():
     """Scan the artifacts directory for available platform-specific libraries."""