docs: clarify gateway remote node flow

docs/nodes/index.md

@@ -12,6 +12,10 @@ A **node** is a companion device (iOS/Android today) that connects to the Gatewa
 
 macOS can also run in **node mode**: the menubar app connects to the Gateway’s bridge and exposes its local canvas/camera commands as a node (so `clawdbot nodes …` works against this Mac).
 
+Notes:
+- Nodes are **peripherals**, not gateways. They don’t run the gateway daemon.
+- Telegram/WhatsApp/etc. messages land on the **gateway**, not on nodes.
+
 ## Pairing + status
 
 Pairing is gateway-owned and approval-based. See [Gateway pairing](/gateway/pairing) for the full flow.