Renamed Action System to Agent Core

diagrams/SIA_Component_Model.puml

@@ -4,7 +4,7 @@ skinparam componentStyle uml2
 
 package "SIA System" {
   [LLM Engine] as LLM
-  [Action System] as AS
+  [Agent Core] as AC
   [Context Template] as CT
   
   package "Modules" {
@@ -23,11 +23,11 @@ database "File System" as FS {
   database "Git Repository" as GR
 }
 
-AS -> LLM : Context
-LLM -> AS : Reasoning and actions
+AC -> LLM : Context
+LLM -> AC : Reasoning and actions
 
-CT --> AS : Context
-AS --> Modules : Commands to execute
+CT --> AC : Context
+AC --> Modules : Commands to execute
 Modules --> CT : Data
 
 DM -> DE : Container management