docs(comms): TL;DR prologue for consumer guide (comms-etiquette v1.0)

docs/consumer-guide.md

@@ -1,5 +1,25 @@
 # Consumer Guide — Declare intent, deploy to AWS
 
+**TL;DR** — This guide takes a consumer from an empty repository to
+applied AWS infrastructure: create a repo, write one YAML contract,
+validate offline, then run the platform script against AWS.
+
+**What** —
+- Step-by-step contract authoring with a worked static-site example,
+  generic across all modules.
+- A field-by-field reference for contract and module inputs.
+- Offline validation first (no AWS); the live AWS run second.
+
+**Why** — The contract is the whole consumer interface; infrastructure
+code stays platform-side.
+
+**Action** — No action — FYI. Follow Steps 1-6 below when ready to
+deploy.
+
+**Details** — The platform README (commands and credentials);
+[`docs/contracts/`](contracts/index.md) (contract shapes).
+
+
 This guide walks a consumer through creating a repo, writing a contract,
 validating it offline, and running it against AWS. It is **generic** across
 all modules in the registry; `static-assets` is the worked example, but