When changing dependency declarations in configuration files like `pyproject.toml`, treat group placement and lockfile updates as part of the change. - **Update/submit the lockfile** whenever dependencies or version constraints are modified (e.g., commit the corresponding `uv.lock`). - **Preserve required dependency scope**: if a dependency is needed by multiple groups (such as both `default` and `test`), keep it declared in each required group—don’t “move” it to another group just to reduce duplication. Example (pattern): ```toml [project.optional-dependencies] # Keep in both groups if both are required default = ["pycryptodomex==3.20.0"] test = ["pycryptodomex==3.20.0", "websockets>=14.0"] ``` After editing, regenerate and commit the matching lockfile (e.g., `uv.lock`).