fix(code): mount workspace volume to /home/coder/workspace

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

code/compose.yml

@@ -10,7 +10,7 @@ services:
       ANTHROPIC_API_KEY: ${ANTHROPIC_API_KEY}
     volumes:
       - ../.data/code/config:/home/coder/.config
-      - ../.data/code/workspace:/home/coder
+      - ../.data/code/workspace:/home/coder/workspace
     restart: always
     labels:
       - "traefik.enable=true"