[Bug]: Activity recoding is broken

[saksham2001]

What happened?

There are couple of problems with activity recording:

• If the app is in background, it stops getting GPS points and data from the ring.
• For the 56ff ring we don't know the command to change the frequency of HR/SpO2 measurements - to change to get data at higher frequency during workout. So we have been triggering spot measurements which do not work reliably. We need to update this to switch the data frequency only for Colmi rings and use the fixed frequency for 56ff. Occasional sync with the ring should be used to show the data on the Live Activity screen.

Steps to reproduce

Try to record an activity

Which ring are you using?

jring (generic SMART_RING / 56ff)

iOS version

iOS 26.5

iPhone model

iPhone 16 Pro

PulseLoop version / commit

main

Which area is affected?

Workout recording / Live Activity

Logs / screenshots

Before submitting

• I searched existing issues and this isn't a duplicate.
• I removed any personal health data / secrets from logs and screenshots.