groove-utilities-task-config

Outcome

The current task backend configuration is shown to the user, or updated based on provided arguments. After update, user is prompted to run /groove-utilities-task-install if the backend changed.

Acceptance Criteria

• Current tasks.backend value is displayed with no arguments
• Backend is updated in .groove/index.md frontmatter when new value provided
• User is reminded to run /groove-utilities-task-install if backend changed

Constraints

• Read and write .groove/index.md frontmatter tasks.backend key only
• Valid values: beans, linear, github, none
• Reject unknown backend values with a helpful error listing valid options
• If .groove/index.md does not exist, create from skills/groove/templates/index.md with defaults
• Do not modify any other keys in .groove/index.md