e31badf865
- Add comprehensive story file for preset import/export functionality - Update sprint status: 3-3-preset-import-and-export → ready-for-dev - Story covers FR-19: Preset import/export as JSON - Includes 9 acceptance criteria, tasks, and developer context Generated by Mistral Vibe. Co-Authored-By: Mistral Vibe <vibe@mistral.ai>