Git adding case insenstiive

gnommo/parser.py

@@ -25,6 +25,35 @@ def _read_json(path: Path) -> Any:
     return json.loads(text) if text else {}
 
 
+def _resolve_case_insensitive(path: Path) -> Path:
+    """Return the real on-disk path, resolving each component case-insensitively.
+
+    On case-insensitive filesystems (macOS) paths just work. On case-sensitive
+    ones (Linux/WSL) a mismatch between project.json and the actual directory
+    name causes a FileNotFoundError. This walks each component and picks the
+    first directory entry whose name matches case-insensitively, returning the
+    corrected path. If the path already exists, it is returned unchanged.
+    """
+    if path.exists():
+        return path
+
+    resolved = path.anchor and Path(path.anchor) or Path(".")
+    for part in path.parts[len(Path(path.anchor).parts):]:
+        if (resolved / part).exists():
+            resolved = resolved / part
+        else:
+            try:
+                match = next(
+                    (p for p in resolved.iterdir() if p.name.lower() == part.lower()),
+                    None,
+                )
+            except (OSError, NotADirectoryError):
+                match = None
+            resolved = match if match else (resolved / part)
+
+    return resolved
+
+
 def parse_manuscript(
     project_path: Path,
 ) -> tuple[str, list[str], list[tuple[int, str]], list[Citation]]:
@@ -267,6 +296,9 @@ def parse_slides(
     else:
         local_slides_path = project_path / "slides.json"
 
+    # Resolve case-insensitively before cache lookup (handles Mac vs WSL casing).
+    local_slides_path = _resolve_case_insensitive(local_slides_path)
+
     # Try cache fallback for reading JSON
     slides_path, _ = resolve_with_cache(local_slides_path, project_path)
     if not slides_path.exists():