diff --git a/gsap_broker/chronicle/client.py b/gsap_broker/chronicle/client.py
index 15ec723..cd7569e 100644
--- a/gsap_broker/chronicle/client.py
+++ b/gsap_broker/chronicle/client.py
@@ -1,4 +1,12 @@
-"""Chronicle CloudEvents client. Optional per GSAP §1.4."""
+"""Chronicle CloudEvents client. Optional per GSAP §1.4.
+
+# TODO(M6.2): replace this Forgejo-format webhook poster with a direct
+# gRPC RecordEvent call once Chronicle exposes the Rekor-backed gRPC
+# surface (per ADR-001 D2 + SPEC-CHRONICLE-0001 §8.5). The same pattern
+# is duplicated in capstone/apps/governance/chronicle.py and
+# capstone/apps/connectors/chronicle.py; all four will be replaced
+# together when M6.2 ships.
+"""
 import hashlib, json, logging
 from datetime import datetime, UTC
 import httpx