[jkuehnemundt]

Summary

• The server allowlist already accepts 39 dietary metrics, but the iOS app only synced caffeine and water
• Apps like Yazio write calories, macros and micronutrients into HealthKit — users expected them to appear in FreeReps
• Add 18 nutrition types: energy consumed, protein, total/saturated/mono/polyunsaturated fat, carbohydrates, sugar, fiber, cholesterol, sodium, potassium, calcium, iron, magnesium, zinc, vitamin C, vitamin D
• All use aggregateCumulative to match their cumulative HealthKit semantics
• Caffeine corrected from g/individual to mg/aggregateCumulative

Test plan

• Build the iOS app in Xcode — verify no compile errors
• Check HealthKit permissions screen shows the new nutrition types
• Sync with a Yazio user's HealthKit data and verify dietary_energy_consumed, dietary_protein etc. appear in FreeReps
• Confirm dietary_water and dietary_caffeine still sync correctly after the strategy change