Initial commit: skills library

- 70 skills with code and documentation
- Add .gitignore (ignore __pycache__, output/, temp/, venv/)
- Clean up test intermediates and caches

musicXML-ocr/scripts/remove_print.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+"""删除 MusicXML 中所有 <print> 元素。"""
+import sys
+import xml.etree.ElementTree as ET
+
+if len(sys.argv) < 2:
+    print('Usage: python remove_print.py input.musicxml [output.musicxml]')
+    sys.exit(1)
+
+input_file = sys.argv[1]
+output_file = sys.argv[2] if len(sys.argv) > 2 else input_file.replace('.musicxml', '_no_print.musicxml')
+
+ET.register_namespace('m', 'http://www.musescore.org/ns/mscore')
+ET.register_namespace('xlink', 'http://www.w3.org/1999/xlink')
+
+tree = ET.parse(input_file)
+root = tree.getroot()
+removed_count = 0
+for elem in root.iter():
+    to_remove = [c for c in list(elem) if c.tag == 'print']
+    for c in to_remove:
+        elem.remove(c)
+        removed_count += 1
+
+try:
+    ET.indent(root)
+except AttributeError:
+    pass
+
+tree.write(output_file, encoding='UTF-8', xml_declaration=True)
+print(f'Removed {removed_count} <print> element(s)')
+print(f'Output: {output_file}')