Index: docs/SDD/SoftwareArchitecture.puml
===================================================================
diff -u -r5703cc9be0f77b0fb405d60767a76033d8f9d2cb -ra5781739bcbe58c754aff8861561495624bc5b67
--- docs/SDD/SoftwareArchitecture.puml	(.../SoftwareArchitecture.puml)	(revision 5703cc9be0f77b0fb405d60767a76033d8f9d2cb)
+++ docs/SDD/SoftwareArchitecture.puml	(.../SoftwareArchitecture.puml)	(revision a5781739bcbe58c754aff8861561495624bc5b67)
@@ -14,18 +14,19 @@
     node "LeahiRt (process)" {
         component "LeahiRtController" as LRC
         component "Can::CanInterface" as CAN
-        component "AgentInterface" as AI
+        component "RtInterface" as AI
     }
 
-    node "MsgUtils (lib)" {
+    node "Comms (lib)" {
+        component "RtInterface\nimpl" as AI_IMPL
+        component "RtServer\n(local-socket server)" as RS
         component "Can::MessageDispatcher\n(per-CAN-id reassembly)" as MDISP
         component "Can::MessageBuilder\n(frame ↔ message)" as MB
-        component "AgentMessage\n(framing + CRC)" as AM
-        component "LeahiMsgDefs\n(generated C++)" as MD <<generated>>
+        component "RtMessage\n(framing + CRC)" as AM
     }
 
-    node "Comms (lib)" {
-        component "AgentInterface\nimpl" as AI_IMPL
+    node "MsgUtils (lib)" {
+        component "LeahiMsgDefs\n(generated C++)" as MD <<generated>>
     }
 
     interface "CAN Bus\n(SocketCAN)" as CANBUS
@@ -38,7 +39,7 @@
 
 node "AgentSim (tool / future Agent)" {
     component "AgentSimController" as ASC
-    component "AgentMessage\n(framing + CRC)" as AM2
+    component "RtMessage\n(framing + CRC)" as AM2
 }
 
 cloud "Cloud Service\n(out of scope)" as CLOUD <<external>>