diff --git a/.changeset/npm-description-emdash.md b/.changeset/npm-description-emdash.md
new file mode 100644
index 0000000..e9858c5
--- /dev/null
+++ b/.changeset/npm-description-emdash.md
@@ -0,0 +1,15 @@
+---
+"@cosyte/transform": patch
+---
+
+The npm `description` no longer carries an em dash (`EMDASH-CONFORMANCE`).
+
+The brand rule bans U+2014 on every cosyte surface, and this string is the most visible one the
+package has: it is the subtitle on the npm package page and the one line shown in every npm search
+result. It now reads with a colon, which is what the rule's own remedy list names first.
+
+The `→` in the same string is U+2192, not an em dash, and it is load-bearing: it names the direction
+of the transformation. It stays.
+
+Scoped deliberately to the description alone. The full tree sweep for this repo is a separate unit,
+still queued, and lands with the CI gate that keeps it swept.
diff --git a/package.json b/package.json
index 7b65e08..c553462 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@cosyte/transform",
   "version": "0.0.6",
-  "description": "HL7 v2 → FHIR R4 transformation library for Node.js and TypeScript — IG-grounded, fail-safe, value-free diagnostics; never a confident wrong FHIR value.",
+  "description": "HL7 v2 → FHIR R4 transformation library for Node.js and TypeScript: IG-grounded, fail-safe, value-free diagnostics; never a confident wrong FHIR value.",
   "keywords": [
     "hl7",
     "hl7v2",