messaging — what we say

A company that hasn't written its messaging down says something slightly different every time it opens its mouth — the pitch mutates per teller, the website claims things nobody can back, and every new blog post re-litigates tone from scratch. This skill writes down what the company says, once. It interviews the founder into a pitch that survives three lengths, a ledger where every claim names its evidence, a vocabulary with teeth, and channel rules that make the hundredth post sound like the first — then ships it as a Business OS module: canonical MESSAGING.md, machine contract, core tables, MCP server, standalone site.

This is stone 4 of 8. Read ../PROTOCOL.md before composing — the module contract, workspace layout, and definition of done live there and are not repeated here.