diff --git a/.cursor/rules/app-recreation-core.mdc b/.cursor/rules/app-recreation-core.mdc
index ef3aea7..b767883 100644
--- a/.cursor/rules/app-recreation-core.mdc
+++ b/.cursor/rules/app-recreation-core.mdc
@@ -5,6 +5,10 @@ alwaysApply: true
 
 # AIRMQ Recreation Core Rules
 
+## Hard repository constraint
+
+ALL CHANGES ONLY IN `airmq-android-2026` REPO; NO CHANGES EVER IN `airmq-android`.
+
 ## Repository boundaries
 
 1. Do not modify anything under `C:\Users\sysop\Desktop\airmq-android`.