Stage 5: Documentation Extraction (lfe_docs.erl)

Purpose: Extract documentation from code and format it per EEP-48 (Erlang documentation standard).

Module: lfe_docs.erl (362 LOC) - Location: src/lfe_docs.erl

EEP-48 format:

-record(docs_v1, {
    anno :: erl_anno:anno(),
    beam_language :: atom(),
    format :: binary(),
    module_doc :: doc_content(),
    metadata :: map(),
    docs :: [doc_element()]
}).

Documentation extraction process:

1. Module docs: From module metadata (defmodule name "docstring" ...)
2. Function docs: From function metadata (defun name "docstring" ...)
3. Type docs: From type definitions
4. Spec extraction: Function specifications

Docstring formats supported:

• Binary: #"Documentation string"
• Charlist: "Documentation string"
• Hidden: false (function exists but not documented)

Integration: Docs stored in .beam file as chunk "Docs", accessible via code:get_doc/1.