- publisher.py: add get_draft() to fetch draft content by media_id,
add html_to_plaintext() for HTML→text conversion
- learn_edits.py: add --from-wechat flag that auto-fetches latest draft
from WeChat, converts both sides to plaintext, and diffs
- learn_edits.py: add markdown_to_plaintext() for local file conversion
- SKILL.md: update edit workflow — both local and WeChat edits supported
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>