Check if WebDAV login is successful. Returns a message indicating success or failure.

Ensure that the /Notes folder exists in Nextcloud. Creates it if it doesn't exist.

List all Markdown (.md) files directly inside /Notes (not in subfolders).

List all categories (directories) inside /Notes.

List all notes in a given category inside /Notes.

Args: category_name: The subfolder name inside /Notes

Returns: List of note filenames (.md) in that category.

Read a Markdown (.md) file.

Args: filename: Name of the note file, e.g., "note1.md" category: Optional category folder. If None, read from /Notes root.

Returns: Content of the note as a string.

Edit a Markdown (.md) file, updating its content. Always overwrites the old file.

Create a new Markdown (.md) note.

• If category is None → stored in /Notes/

• If category is provided → stored in /Notes//

Delete a note file inside Notes.

Rename a Markdown (.md) note inside Notes or a category. Overwrites the target if it already exists.

Create a new category inside Notes by creating a subdirectory.

Rename an existing category inside Notes.

Args: old_name: Current name of the category. new_name: New name for the category.

Delete a category folder inside Notes.