Add support for attachments in notes

verify_image_attachment.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+import sys
+from nextcloud_mcp_server.client import NextcloudClient
+
+def main():
+    note_id = 420  # ID of the note we created earlier
+    
+    # Create client
+    client = NextcloudClient.from_env()
+    
+    # First verify the note exists
+    print(f"Retrieving note {note_id}...")
+    try:
+        note = client.notes_get_note(note_id=note_id)
+        print(f"Note retrieved: {note['title']}")
+    except Exception as e:
+        print(f"Error retrieving note: {e}")
+        return 1
+    
+    # Now try to get the image attachment
+    attachment_filename = "sample_image.png"
+    print(f"Retrieving attachment '{attachment_filename}' from note {note_id}...")
+    try:
+        content, mime_type = client.get_note_attachment(
+            note_id=note_id,
+            filename=attachment_filename
+        )
+        print(f"Attachment retrieved successfully!")
+        print(f"MIME type: {mime_type}")
+        print(f"Content size: {len(content)} bytes")
+        
+        # Save the retrieved image to verify it's the same
+        output_path = "retrieved_image.png"
+        with open(output_path, 'wb') as f:
+            f.write(content)
+        print(f"Saved retrieved image to: {output_path}")
+        
+        return 0
+    except Exception as e:
+        print(f"Error retrieving attachment: {e}")
+        return 1
+
+if __name__ == "__main__":
+    sys.exit(main())