feat(craft): show a Business upsell for Craft on Community Edition (#15901)

cli/internal/deploy/deployfiles/embedded/docker_compose/env.template

@@ -21,6 +21,8 @@ IMAGE_TAG=latest
 # CODE_INTERPRETER_IMAGE_TAG=
 
 ## Onyx Craft Configuration (off by default).
+## Craft requires a Business or Enterprise license. The Community Edition shows an
+## upgrade page instead, until Craft merges into the main chat.
 ## When enabling Craft through the installer's --include-craft or by manually adding
 ## docker-compose.craft.yml, the sandbox image follows IMAGE_TAG above.
 # ENABLE_CRAFT=true