add .qmd to to_obsidian_canvas safe_name regex

graphify/export.py

@@ -884,7 +884,7 @@ def to_canvas(
 
     def safe_name(label: str) -> str:
         cleaned = re.sub(r'[\\/*?:"<>|#^[\]]', "", label.replace("\r\n", " ").replace("\r", " ").replace("\n", " ")).strip()
-        cleaned = re.sub(r"\.(md|mdx|markdown)$", "", cleaned, flags=re.IGNORECASE)
+        cleaned = re.sub(r"\.(md|mdx|qmd|markdown)$", "", cleaned, flags=re.IGNORECASE)
         return cleaned or "unnamed"
 
     # Build node_filenames if not provided (same dedup logic as to_obsidian)