Moved md from Phase 2 extensions to allowed formats, added extraction handler (reuses txt handler), and updated plan_limits defaults to include md for all plans. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Moved md from Phase 2 extensions to allowed formats, added extraction handler (reuses txt handler), and updated plan_limits defaults to include md for all plans. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>