diff --git a/README.md b/README.md
index 038c38e..4f29906 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,9 @@ A persistent operator USB with XFCE as the live-image baseline:
 - stable XFCE desktop for the live operator environment
 - browser available immediately
 - Colibri's agent harness staged with the control plane (under the colibri
-  umbrella — no separate feature flag)
+  umbrella; staged by default — `FEATURE_COLIBRI=NO` is an internal build-time
+  escape hatch, e.g. for a build host without a colibri checkout, not a
+  user-facing option)
 - `pi` retained as a spawnable agent backend (bundled npm global)
 - Tailscale available immediately
 - Colibri control-plane daemon staged and enabled as the live-USB rc.d service