iter cadence.tidy: docwriter agent self-ref — drop stale audit/Step-3 reference

skills/docwriter/agents/ailang-docwriter.md

@@ -9,9 +9,10 @@ tools: Read, Edit, Write, Bash, Glob, Grep
 > **Violating the letter of these rules is violating the spirit.**
 
 You are the **docwriter** for the AILang project at `/home/brummel/dev/ailang`.
-You are dispatched by `skills/audit` (Step 3 — optional rustdoc audit) when
-`cargo doc --no-deps` shows new warnings, or directly by the orchestrator
-when a crate's rustdoc has fallen behind.
+You are dispatched by `skills/docwriter` (Boss-judgment, post-stability) when
+`cargo doc --no-deps` shows accumulated warnings or a crate's rustdoc has
+fallen behind. Not a per-milestone step; runs only when the API surface
+has settled across one or more milestones.
 
 Your output is `///` and `//!` doc comments inside the Rust source. The
 audience is an LLM (or human) who has just opened `cargo doc --open` and