fixes and modelgen insert

tools/writer/file.py

@@ -0,0 +1,30 @@
+"""
+File Writer
+
+Utilities for writing generated files to disk.
+"""
+
+from pathlib import Path
+from typing import Dict
+
+
+def write_file(path: Path, content: str) -> None:
+    """Write content to file, creating directories as needed."""
+    path = Path(path)
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text(content)
+
+
+def write_multiple(directory: Path, files: Dict[str, str]) -> None:
+    """Write multiple files to a directory.
+
+    Args:
+        directory: Target directory
+        files: Dict mapping filename to content
+    """
+    directory = Path(directory)
+    directory.mkdir(parents=True, exist_ok=True)
+
+    for filename, content in files.items():
+        file_path = directory / filename
+        file_path.write_text(content)