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.

examples/simple_sensor/main.cpp

@@ -81,6 +81,11 @@ void setup() {
   external_watchdog.begin();
 #endif
 
+#if defined(MESH_DEBUG) && defined(NRF52_PLATFORM)
+  // Allow the USB console to settle before printing boot diagnostics.
+  delay(5000);
+#endif
+
 #ifdef DISPLAY_CLASS
   if (display.begin()) {
     display.turnOff();