gsd-settings

<objective> Interactive configuration of GSD workflow agents and model profile via multi-question prompt.

• Config existence ensuring
• Current settings reading and parsing
• Interactive 5-question prompt (model, research, plan_check, verifier, branching)
• Config merging and writing
• Confirmation display with quick command references </objective>

<process> **Follow the settings workflow** from `@{{PLATFORM_ROOT}}/get-shit-done/workflows/settings.md`.

1. Config file creation with defaults if missing
2. Current config reading
3. Interactive settings presentation with pre-selection
4. Answer parsing and config merging
5. File writing
6. Confirmation display </process>