Merge upstream companion-v1.18.0

Fixes and features from upstream: MACThenDecrypt / command buffer
overflow fixes, ACK forwarding delay, transport code 0 as unscoped,
hidden nodes don't answer DISCOVER, LR2021/LR1121 fixes, GPS cold-start
detection and waitFor()/drain(), NMEA fix-age counters, ESP32 RTC after a
crash, remote CLI by text message (TXT_TYPE_CLI_COMMAND),
PUSH_CODE_BINARY_RESPONSE, board.loop(), new boards (Wio Tracker L1 1W,
ThinkNode M4/M8, Muzi Base, Waveshare LR1121, Pico W).

Kept ours: NodePrefs, main.cpp, every UI, GxEPDDisplay. The companion CLI
stays MyMeshCli.h's handleCliCommand(); upstream's handleCommand() calls
it. The board's FEM gains go through attachDynamicPrefs() with an adapter
over our NodePrefs fields. Upstream's JSON prefs and MultiSerialInterface
come as their own stages.

Also: the display defaults were inside RADIO_FEM_TXGAIN's #else (a
missing #endif).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

variants/promicro/platformio.ini

@@ -23,6 +23,7 @@ build_flags = ${nrf52_base.build_flags}
   -D ENV_INCLUDE_BMP280=1
   -D ENV_INCLUDE_INA3221=1
   -D ENV_INCLUDE_INA219=1
+  -D ENV_INCLUDE_INA226=1
 build_src_filter = ${nrf52_base.build_src_filter}
   +<helpers/sensors>
   +<../variants/promicro>
@@ -34,6 +35,7 @@ lib_deps= ${nrf52_base.lib_deps}
   adafruit/Adafruit BME280 Library @ ^2.3.0
   adafruit/Adafruit BMP280 Library@^2.6.8
   stevemarple/MicroNMEA @ ^2.0.6
+  robtillaart/INA226@^0.6.6
 
 [env:ProMicro_repeater]
 extends = Promicro