Wire pump BLE heartbeat to CGM reading schedule + preserve manager state on missing plugin

[loopkitdev]

Summary

Wires the pump BLE heartbeat to the CGM reading schedule (uses the coupled LoopKit setBLEHeartbeatRequest API) and hardens device-manager restore:

• DeviceDataManager.updatePumpManagerBLEHeartbeatPreference sends a PumpHeartbeatRequest (last CGM reading date + expected interval) when the pump must provide the heartbeat, or nil when the CGM wakes the app itself; refreshed after every CGM reading.
• Preserve persisted pump/CGM state when a plugin can't be instantiated. Previously, launching a build missing a plugin assigned pumpManager/cgmManager = nil, whose didSet deleted the persisted state — permanently wiping the pod pairing (incl. session keys) or CGM config. Now it logs and leaves the saved state on disk for a later build that includes the plugin.

⚠️ Coupling — must merge together

Requires the LoopKit setBLEHeartbeatRequest PR to compile; pairs with the OmnipodKit PR. Merge together. (Cross-links below.)

🤖 Generated with Claude Code

https://claude.ai/code/session_017Tbv6GBAMmGATWp6zwBDy7

Coupled PRs — merge together (three-way dependency)

• LoopKit Add PumpManager.setBLEHeartbeatRequest with CGM reading schedule (non-breaking) LoopKit#596 — PumpManager.setBLEHeartbeatRequest protocol API
• Loop Wire pump BLE heartbeat to CGM reading schedule + preserve manager state on missing plugin #2461 — DeviceDataManager wiring + manager-state preservation
• OmnipodKit Connect-on-demand + reading-scheduled BLE heartbeat + connection policy (DASH C00A own-pod guard, Pod Keep Alive, O5 fault research) loopkitdev/OmnipodKit#4 — heartbeat / connection-policy implementation

Loop and OmnipodKit will not compile without the LoopKit protocol change; land all three together and bump the LoopWorkspace next-dev submodule pins in one commit.

[marionbarker]

Test

I'm putting test notes in comments for this PR so they are in one place.

Summary from initial testing: intermittent success

• When looping while locked, the intervals are sometimes 5 minutes and sometimes 10 minutes
• But sometimes, signal is lost while locked and no reconnection happens until app is reopened

Configuration

I started with LoopWorkspace next-dev commit 14b70bd.
I downloaded the patch files from Loop #2461, LoopKit 596 and used git apply to modify those 2 submodules.
I pointed directly to the loopkitdev o5-integration branch of OmnipodKit, commit fdafb4a.

I am running 2 test phones:

• SE 2nd gen, iOS 18
• SE 3rd gen, iOS 26

Narrative

• 2026-07-18, around 17:00 to both phones: The first time I built I did not do a clean build folder, so I think the update was not clean
  • SE 3rd gen was already connected to an rPi DASH, continued that connection
  • SE 2nd gen was not connected to a pump: Added Ominpod 5 (PH1K04182331) to phone connection
    • When locked, loop went red

2nd gen, Omnipod 5 narrative

• 2026-07-18, 17:30: I did a clean folder and built to the SE 2nd gen phone
  • Loop stays green while locked
  • 20:12 issued loop report and got either 5 min or 10 min connections while locked
  • locked phone again and left it all night
  • observed loop reported signal loss all night
  • 2026-07-19 05:47 issued loop report
  • Omnipod5_Loop Report 2026-07-19 05:47:00-07:00.md
  • podState_Marion_newBLE-o5_20260719_0547_2.csv

2026-07-19 06:16 lock 2nd gen (o5) phone

3rd gen, rPi DASH narrative

• 2026-07-18 20:00: realized this phone was not looping while Loop app in the background; was from the original build (without cleaning build folder), so built again
  • observe that rPi is continuing to interact with the phone (see it in terminal) while phone is locked
• 2026-07-19 06:07:
  • observe that rPi is continuing to interact with the phone (see it in terminal) while phone is locked
  • unlock phone - green loop
  • rPi-DASH_Loop Report 2026-07-19 06:09:09-07:00.md
  • podState_Marion_newBLE-rPi_20260719_0609_3.csv
  • When looping while locked, the intervals are sometimes 5 minutes and sometimes 10 minutes

2026-07-19 06:16 lock 3rd gen (rPi DASH) phone