Regression from per-session points file change (1feb2ef): the service
returns START_STICKY, so when the OS kills it during screen-off, it
restarts with a null intent and onStartCommand minted a NEW points file,
repointing gps_live_points.jsonl and orphaning accumulated background
points. Evidence: many tiny orphaned gps_points_*.jsonl fragments.
Fix: onStartCommand creates a new session file only on a genuine start
from JS (intent with extras). A START_STICKY restart (null intent) keeps
writing to the existing session file from the pointer — one file per
session until Stop.
Verified on device: am kill (= START_STICKY restart) no longer creates
a new file, pointer unchanged, trail resumes on return. Background
writing confirmed: 49 points in 70s with screen off (Dozing) at 1Hz.
4aiman
d4ef9a1f9f