fix: address review feedback on planning params and docker-compose

Add explicit aggregation.enabled: false to planning_params.yaml for
clarity. Add comment about CI/default profile mutual exclusivity in
docker-compose.yml.

Author: bburda

demos/multi_ecu_aggregation/config/planning_params.yaml

@@ -17,6 +17,9 @@ diagnostics:
           create_synthetic_components: false
           create_synthetic_areas: false
 
+      aggregation:
+        enabled: false
+
       cors:
         allowed_origins: ["*"]
         allowed_methods: ["GET", "PUT", "POST", "DELETE", "OPTIONS"]

demos/multi_ecu_aggregation/docker-compose.yml

@@ -57,6 +57,8 @@ services:
     networks: [medkit-net]
 
   # --- CI services (headless, no web UI) ---
+  # NOTE: CI and default profiles are mutually exclusive - do not start both
+  # simultaneously. CI services reuse hostnames for config compatibility.
 
   # Perception ECU for CI testing
   perception-ecu-ci: