Index: docs/SDD/CodeGenPipeline.puml
===================================================================
diff -u -rb915ccc1a72fcca21908c35140af7ac7df1f1f37 -r8b98ff34313ee5d3f5d49672d622162acfc755c9
--- docs/SDD/CodeGenPipeline.puml	(.../CodeGenPipeline.puml)	(revision b915ccc1a72fcca21908c35140af7ac7df1f1f37)
+++ docs/SDD/CodeGenPipeline.puml	(.../CodeGenPipeline.puml)	(revision 8b98ff34313ee5d3f5d49672d622162acfc755c9)
@@ -9,71 +9,60 @@
 start
 :LeahiUnhandled.conf\n(CAN message definitions);
 
-fork
+|Build system|
+if (build system) then (qmake)
+    :extra-compilers "proto", "msgdefs", "canrouting"\nin MsgUtils.pro / CloudConnect.pro;
+else (cmake)
+    :generate_protobuf(),\ngenerate_msg_defs_cpp(),\ngenerate_can_routing_ini()\nin lib/MsgUtils/cmake;
+endif
+:invoke the generator scripts\n(GenerateProtobuf.py, GenerateMsgDefsCpp.py,\nGenerateCanRoutingIni.py)\nusing the shared Python venv;
 
-    ' ── Pipeline A: Protobuf schema ──────────────────────────────
-    |cmake|
-    :generate_protobuf()\ninvokes GenerateProtobuf.py;
+|MsgUtils Python|
+:MsgData.loadConf() parses .conf —\nmessage names, IDs,\nfield names and types;
 
-    |MsgUtils Python|
-    :MsgData loads .conf —\nparses message names, IDs,\nfield names and types;
+fork
 
+    ' ── Pipeline A: Protobuf schema ──────────────────────────────
     |Jinja2 Templates|
     :MsgDefs_proto.jinja\nrenders LeahiMsgDefs.proto;
 
     |protoc|
-    :protoc compiles .proto\ninto C++ stubs\n(LeahiMsgDefs.pb.h / .pb.cc);
+    :protoc --cpp_out compiles .proto\ninto C++ stubs\n(LeahiMsgDefs.pb.h / .pb.cc);
 
-    |CMake build|
-    :pb stubs compiled\ninto MsgUtils library;
+    |Build|
+    :pb.h/cpp files compiled\ninto MsgUtils library;
 
 fork again
 
     ' ── Pipeline B: C++ message structs ─────────────────────────
-    |cmake|
-    :generate_msg_defs_cpp()\ninvokes GenerateMsgDefsCpp.py;
-
-    |MsgUtils Python|
-    :MsgData loads .conf —\nparses message names, IDs,\nfield names and types;
-
     |Jinja2 Templates|
-    :MsgDefs_h.jinja renders\nLeahiMsgDefs.h\n(typed structs + toProtobuf /\nfromQByteArray + msgIdString());
-    :MsgDefs_cpp.jinja renders\nLeahiMsgDefs.cpp\n(method implementations +\ncanMessageToProtobufByteArray() +\nmsgIdString() switch body);
+    :MsgDefs_h.jinja renders\nLeahiMsgDefs.h\n(msg structs with fromQByteArray /\ntoQByteArray);
+    :MsgDefs_cpp.jinja renders\nLeahiMsgDefs.cpp;
     :MsgProtoUtils_h.jinja renders\nLeahiMsgProtoUtils.h;
-    :MsgProtoUtils_cpp.jinja renders\nLeahiMsgProtoUtils.cpp;
+    :MsgProtoUtils_cpp.jinja renders\nLeahiMsgProtoUtils.cpp\n(canMessageToProtobufByteArray());
 
-    |CMake build|
+    |Build|
     :MsgDefs + MsgProtoUtils compiled\ninto MsgUtils library;
 
 fork again
 
-    ' ── Pipeline C: Message handling INI ────────────────────────
-    |cmake|
-    :generate_msg_handling_ini()\ninvokes GenerateMsgHandlingIni.py;
-
+    ' ── Pipeline C: CAN routing INI ─────────────────────────────
     |MsgUtils Python|
-    :MsgHandlingIni loads .conf —\nseeds each msgId with\naction=drop, topic=<empty>;
-    :loadIni() merges existing\nLeahiMsgHandling.ini —\npreserves hand-edited\naction + topic values;
+    :CanRoutingIni.loadConf() extends it —\nto add CAN message handling;
+    :loadIni() merges the existing\nLeahiCanRouting.ini —\nto preserve changes to original file;
 
     |Jinja2 Templates|
-    :MsgHandlingIni.jinja renders\nLeahiMsgHandling.ini\n(per-msgId: msg_id, action, topic);
+    :CanRoutingIni.jinja renders\nLeahiCanRouting.ini\n(msg_id, action, topic);
 
 end fork
 
 |Runtime|
-:CloudConnectController::loadMsgHandling()\nreads LeahiMsgHandling.ini at startup;
-:onMessageReceive() looks up msgId\nin _msgHandling → drop / send_always /\nsend_delta policy, MQTT topic;
-:canMessageToProtobufByteArray()\nconverts CAN → protobuf bytes;
-:msgIdString() used in log output;
+:**CloudConnectController**
+====
+* loadConfig(): reads CloudConnect.ini
+* loadCanRouting(): reads LeahiCanRouting.ini
+* onCanMessageReceive(): CAN msg → protobuf and routes msg
+* canMessageToProtobufByteArray(): converts CAN → protobuf;
 stop
 
-note right
-  Pipelines A and B are triggered by
-  the MsgUtils library cmake target;
-  Pipeline C is triggered by the
-  CloudConnect executable cmake target.
-  All three regenerate whenever
-  the .conf file changes.
-end note
-
 @enduml