What problem does it solve? Reviewing markdown drafts (specs, plans, brainstorms) with a human requires clunky copy-paste cycles between chat and documents. This Skill uploads a local markdown file to Proof (proofeditor.ai), lets the user annotate it in a shared web editor, ingests their comments as tracked edits and in-thread replies, and syncs the reviewed doc back to disk. ## Core Features & Use Cases - Shared Document API: Create, read, comment on, and edit shared markdown docs via Proof's Web API with token-based access, baseToken mutation discipline, and idempotency-key retry handling. - HITL Review Loop: A five-phase workflow (upload, ingest feedback, terminal report, next-signal prompt, end-sync) that auto-applies confident fixes as tracked suggestions, escalates genuine disagreements, and atomically writes the final doc back to the local file. - Local Bridge Mode: Drive the macOS Proof app via localhost:9847 for marks, suggestions, presence, and event polling. - Use Case: After drafting a plan with ce-plan, hand the markdown file off for human review — the user highlights text and leaves comments in Proof's web UI, the agent replies in-thread and applies fixes, then syncs the reviewed revision back to disk. ## Quick Start Share the markdown file I just created to Proof so we can iterate on it together with human-in-the-loop review.