diff --git a/AGENTS.md b/AGENTS.md
index f634bda..ba06bce 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -70,6 +70,7 @@ workflow and report the rollout gap.
 - The mailbox is checkpoint-driven. Do not claim push delivery into a model
   session unless that host has a working adapter. Agents sharing a GitHub
   account are cooperative peers, not separate authenticated security identities.
+- Agents propose architectural, cross-repository, or strategic directions through the formal `board-proposal` issue form in `Repository_Management`, never by opening ad-hoc "idea" issues.
 
 <!-- END FLEET-MANAGED: agent-communication -->
 
diff --git a/CLAUDE.md b/CLAUDE.md
index 63e979a..a674365 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -70,6 +70,7 @@ workflow and report the rollout gap.
 - The mailbox is checkpoint-driven. Do not claim push delivery into a model
   session unless that host has a working adapter. Agents sharing a GitHub
   account are cooperative peers, not separate authenticated security identities.
+- Agents propose architectural, cross-repository, or strategic directions through the formal `board-proposal` issue form in `Repository_Management`, never by opening ad-hoc "idea" issues.
 
 <!-- END FLEET-MANAGED: agent-communication -->