diff --git a/README.md b/README.md
index c8dab50..752596a 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,7 @@ Action approval flow: `pending/` → operator approves → `approved/` → execu
 ## Repository Structure
 
 - `docs/`: [Infrastructure Standards](docs/standards.md) and [Deployment Conventions](docs/deployment.md).
+- `docs/architecture/PLAN-subsystem-a-2026-07-28.md`: [Current Maintenance Plan (Control Plane)](docs/architecture/PLAN-subsystem-a-2026-07-28.md).
 - `hosts/`: Host-specific configurations and service assignments.
 - `services/`: Reusable Docker Compose service definitions.
 - `scripts/`: Deployment and management scripts.
@@ -44,6 +45,7 @@ Action approval flow: `pending/` → operator approves → `approved/` → execu
 
 ## Documentation Index
 
+- [Current Maintenance Plan (Control Plane)](docs/architecture/PLAN-subsystem-a-2026-07-28.md)
 - [Infrastructure Standards](docs/standards.md)
 - [Agent Operating Procedures](docs/agents.md) (For AI/Non-Human Agents)
 - [Deployment Conventions](docs/deployment.md)