diff --git a/projects/AGENTS.md b/projects/AGENTS.md
index be7d184..8f972a4 100644
--- a/projects/AGENTS.md
+++ b/projects/AGENTS.md
@@ -25,6 +25,8 @@ When delegating work to subagents, follow this iteration loop:
 
 Key principles:
 - The subagent implements, the architect reviews. Do not switch roles.
+- When testing reveals a bug, the architect writes the spec and deploys a
+  subagent to fix it. Do not fix bugs discovered during testing yourself.
 - Every review pass must find fewer issues than the previous pass
 - If a subagent introduces new bugs while fixing reported ones, reject
 - Zero issues means zero: no style nits, no missing edge cases, no