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The widget-dedup test imported plugins.docker.routes, which re-imports plugins.docker.models after the app already loaded the docker plugin — "Table 'docker_containers' is already defined". Same plugin-loader gotcha the host_agent query helpers avoid. Extract dedup_by_container_id into plugins/docker/dedup.py (imports no ORM models, so it's safe to import in either environment); routes.py imports it from there and the test targets the model-free module. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016Jg27rgypiW2efULXJDtMC