documenter-coauthoringlisted

# Documenter Coauthoring Add this to `documenter`; it changes collaboration, not documentation rules. ## Workflow 1. Establish the working state: - read supplied files and existing docs before asking discoverable questions - infer the audience, outcome, template, constraints, and output target - invite an unstructured context dump when useful - ask one batched set of questions only for unknowns that materially affect the next checkpoint - track the accepted outline and sections, decisions, general preferences, assumptions, open questions, delegated authority and its limits, checkpoint cadence, and next action - on resume, or before switching from chat-only draft to applied edits, refresh the canonical artifact, relevant evidence, repository state, and initial diff; mark affected accepted sections stale when material evidence or decisions changed 2. Agree on structure and user control: - confirm and reuse an established structure; when structure is unresolved, propose an outline with material alternatives, assumptions, and a recommendation - derive checkpoint cadence from the request; if it is unspecified, propose the smallest useful next checkpoint - let the user approve, revise, waive, or delegate checkpoints and decisions - treat delegation as authority to skip covered pauses, not as authority to hide ripple effects, weaken evidence or safety checks, or cause external side effects - p