diff --git a/AGENTS.md b/AGENTS.md
index 3737d0f7..42a72b49 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -37,6 +37,7 @@ REPLACE BROKEN CODE; DON'T WRITE NEW CODE WITH A DUPLICATE PATH
 
 - ⚠️ **Never kill a VS Code process**, including browser-hosted instances. The user cannot recover from this.
 - ⚠️ **Never host a report anywhere.** No Claude artifacts, no hosted pages, no external upload — for any result, scorecard, comparison or audit. **Every report is a markdown file, in this repository, produced MECHANICALLY by the code that ran the measurement.** A report typed up by an agent is not a report: the numbers cannot be reproduced, cannot be diffed, cannot be re-run, and the agent is free to be wrong. If a figure is worth reporting, the tool that measured it emits it. Point the user at the file path.
+- ⚠️ **Headlines only. No essays.** Chat replies are a status line, not a document: the result, the number that moved, the file path. No restating the request, no narrating the steps taken, no tables the emitted report already contains. Use an emoji to mark anything critical — 🛑 a blocker, 🔴 a regression or failing gate, ✅ a pass — so it is findable at a glance. Detail belongs in the mechanically-produced report above; point at it instead of retyping it.
 - ⚠️ **No git.** No `add`, `commit`, `push`, `checkout`, `merge`, `rebase`, `worktree`. Never push to `main`, never stamp yourself as co-author. One branch at a time; never start a new branch when a feature branch exists; converge branches before other work. CI handles git. (`gh issue create` excepted.)
 - ⚠️ **No using text pattern matching on source code or structured data. No RegEx on code**. USE THE AST!
 - ⚠️ **Token discipline.** Check file size before reading. `Grep` over `Read`; use `offset`/`limit`. Smallest diff that solves the problem. Delete dead code, unused imports, stale comments. Call out irrelevant context — bloat degrades reasoning.