fix cli if there is no other type of doc to make it robust

packages/leann-core/src/leann/cli.py

@@ -356,6 +356,8 @@ Examples:
                 ".py",
                 ".jl",
             ]
+        # Try to load other file types, but don't fail if none are found
+        try:
             other_docs = SimpleDirectoryReader(
                 docs_dir,
                 recursive=True,
@@ -363,6 +365,11 @@ Examples:
                 required_exts=code_extensions,
             ).load_data(show_progress=True)
             documents.extend(other_docs)
+        except ValueError as e:
+            if "No files found" in str(e):
+                print("No additional files found for other supported types.")
+            else:
+                raise e
 
         all_texts = []