lang 0.1.1

New features

• lang_use() and lang_help() gain a context_size argument (.context_size in lang_use()). When set, a short summary of the full help page is generated and injected into the translation prompt for every field, giving the LLM consistent terminology across sections. Defaults to 100 words; set to 0 to disable.

Improvements

• Rd parsing has been rewritten to use a structured intermediate list (rd_to_list() / list_to_rd()) instead of regex-based text manipulation. This makes translations more reliable and eliminates a class of edge-case formatting errors.