Function build_user_dictionary 

pub fn build_user_dictionary(
    _kind: String,
    input_file: String,
    output_dir: String,
    metadata: Option<&JsMetadata>,
) -> Result<()>

Builds a user dictionary from a CSV file.

Arguments

• kind - Dictionary kind (reserved for future use).
• input_file - Path to the CSV file containing user dictionary entries.
• output_dir - Directory where the built user dictionary will be saved.
• metadata - Optional metadata configuration. If omitted, default values are used.