Merge IoTThinks PowerSaving-v17 into keymindCascade

Integrate PowerSaving-v17 through a27e78e4 (six new commits).
Use its 10-minute awake / 30-minute asleep companion GPS profile and
separate requested GPS state from receiver power in CLI diagnostics.
Include its nRF52 sensor debug-console settle delay and debug option.

Resolve overlapping GPS v2 changes using the current sensor callbacks,
which already implement live power-saving transitions, user-off control,
telemetry acquisition, wrap-safe sleep/wake timers and retained Airoha
RTC backup. Preserve preference persistence, telemetry cache/holds and
UART/shared-rail ownership safeguards across all four GPS drivers.

Add a compiled production GPS status regression test and run it in CI.
Validated 23 native GPS/power tests, preference and nRF52 pin contracts,
and firmware builds for T1000-E BLE Companion, MeshTracker X1 USB
Companion, Heltec Tracker Repeater, Mesh Solar Room and RAK4631 Sensor.

.github/workflows/run-unit-tests.yml

@@ -175,6 +175,9 @@ jobs:
       - name: Verify ESP32 USB sleep and G3 button wake
         run: python3 -B test/test_esp32_usb_sleep.py
 
+      - name: Verify GPS status distinguishes user settings from receiver sleep
+        run: python3 -B test/test_gps_status.py
+
       - name: Verify Companion ASCII defaults and USB session cleanup
         run: |
           python3 -B test/test_companion_usb_default.py