diff --git a/README.md b/README.md
index 4b51dc4..5c26148 100644
--- a/README.md
+++ b/README.md
@@ -8,30 +8,39 @@ channels as real members through a native channel plugin.
 ## Architecture
 
 ```
-                ┌──────────────────────┐
-                │  Fabric.Backend       │  identity hub (NestJS, :7001)
-                │  .Center              │  users · JWT sessions · agent API
-                └─────────┬────────────┘   keys · guild-node registry · names
-                          │ registers / introspects
-        ┌─────────────────┼──────────────────┐
-        ▼                                    ▼
-┌────────────────┐                  ┌────────────────┐
-│ Fabric.Backend │ guild node       │ Fabric.Backend │ guild node (NestJS,
-│ .Guild  :7002  │ channels · msgs  │ .Guild  :7003  │ :700x …) — many nodes
-│ realtime·files │ turn engine …    │ …              │
-└───────┬────────┘                  └────────────────┘
-        │ socket.io + REST
-        ▼
-┌────────────────┐  one SPA, reused everywhere
-│ Fabric.Frontend│ ──► Fabric.Desktop  (Electron shell, bundles the SPA)
-│  (React/Vite)  │ ──► Fabric.Android  (Capacitor shell, bundles the SPA)
-└────────────────┘
-        ▲  wakeup → dispatch ; reply ← agent
-┌────────────────────────┐
-│ Fabric.OpenclawPlugin   │ OpenClaw **channel plugin**: agents = members
-└────────────────────────┘
+                          ┌──────────────────────┐
+                          │  Fabric.Backend       │  identity hub (NestJS,
+                          │  .Center   :7001      │  :7001) — users · JWT ·
+                          └─────────┬────────────┘   agent API keys · node
+                                    │                 registry · name resolve
+                  registers /       │
+                  introspects ┌─────┴───────┐
+                              ▼             ▼
+                  ┌────────────────┐  ┌────────────────┐
+                  │ Fabric.Backend │  │ Fabric.Backend │  guild nodes
+                  │ .Guild  :7002  │  │ .Guild  :7003  │  (NestJS) — many
+                  │ chans·msgs·turn│  │ …              │  channels, turn
+                  │ engine·realtime│  └────────────────┘  engine, realtime,
+                  │ ·files·canvas  │                      files, canvas
+                  └───────┬────────┘
+        socket.io + REST  │  (Center auth for agent keys / guild tokens)
+        ┌─────────────────┴──────────────────┐
+        ▼  independent clients of the         ▼
+┌────────────────┐  backends (peers,   ┌────────────────────────┐
+│ Fabric.Frontend│  not linked)        │ Fabric.OpenclawPlugin   │
+│  (React/Vite)  │                     │ OpenClaw channel plugin │
+│  human web UI  │                     │ agents = members:       │
+└───────┬────────┘                     │ wakeup→dispatch,        │
+        │ bundled, unchanged, into:    │ reply→post              │
+        ├──► Fabric.Desktop (Electron) └────────────────────────┘
+        └──► Fabric.Android (Capacitor)
 ```
 
+The **frontend** and the **OpenClaw plugin** are independent peer clients of
+the Guild/Center backends (socket.io + REST). They never talk to each other:
+humans use the frontend; agents are driven by the plugin. Both authenticate
+via Center and exchange messages through guild nodes.
+
 ## Repository layout (git submodules)
 
 | Submodule | Role |