{"schema_version": "vibe-public-case-engineering/v1", "case_id": "creative-080", "requirements": [{"id": "requirement-001", "title": "归零、关键帧和可重复路径", "kind": "functional", "detail": "", "status": "design_proposed", "status_label": "方案需求，待验证", "source_ids": []}, {"id": "requirement-002", "title": "皮带滑轨和相机快门接口", "kind": "external_dependency", "detail": "", "status": "design_proposed", "status_label": "方案需求，待验证", "source_ids": []}, {"id": "requirement-003", "title": "Demo 实现路径", "kind": "implementation_direction", "detail": "步进电机+皮带滑轨；限位归零；Web/BLE 设置起点终点、速度和间隔；记录可重复路径。", "status": "design_proposed", "status_label": "方案需求，待验证", "source_ids": []}, {"id": "requirement-004", "title": "软件实现方向", "kind": "implementation_direction", "detail": "FluidNC、BLE/PWA、时间线", "status": "design_proposed", "status_label": "方案需求，待验证", "source_ids": []}], "components": [{"id": "board.adafruit-324", "name": "NEMA-17 12V 350mA (324)", "manufacturer": "Adafruit", "mpn": "NEMA-17 12V 350mA (324)", "kind": 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