diff --git a/CLAUDE.md b/CLAUDE.md
index c17b1178..803ba24a 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -167,6 +167,10 @@ hive-ag3nt/        in-container harness crate; produces TWO binaries
                          fell outside the truncation window in a
                          trailing `mentions (truncated from body):`
                          block (#539 / #544).
+  src/identity.rs       hive-qualified agent label (#589 phase A):
+                         `label()` / `qualified_label()` / `qualify(label)`.
+                         Reads `HYPERHIVE_HIVE_DOMAIN`; falls back to short
+                         name when unset.
   src/login.rs          probe /root/.claude/ for a valid session
   src/login_session.rs  drives `claude auth login` over stdio pipes
   src/prompt.rs         system prompt renderer: filters the unified