HealthKit Documentation Search these docs to answer questions about HealthKit APIs. Return Format Always include: 1. Summary - Answer the question concisely 2. File paths - List relevant files for full details, e.g.: - for HKHealthStore API - for unit conversions Files - - Framework overview and all available APIs - - Health data store operations - - Quantity samples (weight, heart rate, etc.) - - All quantity type identifiers - - Querying health data - - Units and conversions