(improvement)(launcher)Refactor Demo impl and config

launchers/standalone/src/main/resources/application-local.yaml

@@ -9,7 +9,6 @@ spring:
   h2:
     console:
       path: /h2-console/semantic
-      # enabled web
       enabled: true
   datasource:
     driver-class-name: org.h2.Driver
@@ -31,16 +30,10 @@ authentication:
       header:
         key: Authorization
 
-demo:
-  enabled: true
-
 query:
   optimizer:
     enable: true
 
-multi:
-  turn: false
-
 time:
   threshold: 100
 
@@ -70,6 +63,11 @@ text2sql:
     num: 1
 
 s2:
+  demo:
+    names: S2VisitsDemo,S2ArtistDemo
+    enableLLM: true
+  multi-turn:
+    enable: false
   langchain4j:
     #1.chat-model
     chat-model: