fix: use ~/.tradingagents/ for cache and logs, resolving Docker permission issue (#519)

docker-compose.yml

@@ -4,7 +4,7 @@ services:
     env_file:
       - .env
     volumes:
-      - ./results:/home/appuser/app/results
+      - tradingagents_data:/home/appuser/.tradingagents
     tty: true
     stdin_open: true
 
@@ -22,7 +22,7 @@ services:
     environment:
       - LLM_PROVIDER=ollama
     volumes:
-      - ./results:/home/appuser/app/results
+      - tradingagents_data:/home/appuser/.tradingagents
     depends_on:
       - ollama
     tty: true
@@ -31,4 +31,5 @@ services:
       - ollama
 
 volumes:
+  tradingagents_data:
   ollama_data: