obligation-extraction은(는) 무엇을 하나요?
Extract every dated or triggerable obligation from an executed contract into an oblig-register YAML file (schema in this repo), including the notice clause as deemed-receipt parameters. Then validate, resolve deadlines, and export a calendar. Use when someone asks "what do we have to do under this contract and when", "put this contract's dates in the calendar", or "build an obligations register".