[UPSTREAM] Feature: Push HeartRate and StepCount to Nightscout API v3

[bcoster22]

Upstream Reference

nightscout#4497

Feature Request

Sync heart rate and step count data from Wear app to Nightscout API v3. Author already has a working implementation in a fork.

Design (from author)

• Use polymorphic entries collection (APIv3) rather than new NS collection
• Heart rate: max 1 reading/minute in 5-minute batches
• Steps: max 1 record per 5 minutes
• Database entities already exist: HeartRate and StepsCount tables

Key Files

• database/impl/ — HeartRate and StepsCount entities already in Room DB
• core/nssdk/ — Nightscout API client
• plugins/sync/ — sync workers
• wear/ — data collection from wearable

Action Items

• Review existing HeartRate/StepsCount entities
• Add NS v3 sync for these data types
• Add to DataSyncWorker upload pipeline