merge: upstream/dev into webconfig (v1.16.0 base -> 2026-07-19)

First upstream merge since the 2026-06-06 base (191 upstream commits). 14 files
conflicted; resolutions below.

Fleet-critical check (Constraint 1): upstream reordered NodePrefs members
(rx_boosted_gain / path_hash_mode moved to the struct tail) but did NOT change
/com_prefs. Persistence is written field-by-field at explicit offsets, so member
order is in-memory only. Verified the fork's writeCommonPrefsImage() is
byte-identical to upstream's inline writer at every offset (79 pad, 121, 122,
290-294). No migration needed.

Resolutions:
- CommonCLI.h: kept the fork's NodePrefs (superset) and adopted upstream's
  setRxBoostedGain(bool)->bool signature change, which CommonCLI.cpp now uses to
  report unsupported. Corrected a stale comment claiming rx_boosted_gain lives at
  offset 79 (it is a pad; the field is at 290).
- CommonCLI.cpp: kept the fork's legacy /com_prefs migration and the extracted
  writeCommonPrefsImage() call.
- UITask.cpp: three-way merge - upstream's drawTextCentered + powering-off
  screen, plus the fork's WITH_WEBCONFIG portal/reboot screens.
- ESP32Board.cpp, MeshCore.h, platformio.ini: kept both sides (fork OTA additions
  alongside upstream powerOff/enterDeepSleep and Packet.cpp).
- MicroNMEALocationProvider.h: took upstream's claim/release and added the
  _claims member they depend on.
- MyMesh.cpp/.h (repeater + room server): kept the fork's superset defaults.
- Removed duplicate declarations auto-merge produced: RadioLibWrapper::_cad_enabled
  and MyMesh::getCADEnabled().

Verification: native suite 15/15 (incl. upstream's new test_mesh_tables), both
MQTT smoke builds green, ArduinoJson pin check passes. Hardware validation next.

examples/simple_repeater/main.cpp

@@ -5,7 +5,12 @@
 
 #ifdef DISPLAY_CLASS
   #include "UITask.h"
-  static UITask ui_task(display);
+  static UITask ui_task(board, display);
+#endif
+
+#ifdef ETHERNET_ENABLED
+  #define ETHERNET_CLI_BANNER "MeshCore Repeater CLI"
+  #include <helpers/nrf52/EthernetCLI.h>
 #endif
 
 StdRNG fast_rng;
@@ -18,6 +23,9 @@ void halt() {
 }
 
 static char command[160];
+#ifdef ETHERNET_ENABLED
+static char ethernet_command[160];
+#endif
 
 // For power saving
 unsigned long POWERSAVING_FIRSTSLEEP_SECS = 120; // The first sleep (if enabled) from boot
@@ -33,6 +41,10 @@ void setup() {
 
   board.begin();
 
+#ifdef HAS_EXTERNAL_WATCHDOG
+  external_watchdog.begin();
+#endif
+
 #if defined(MESH_DEBUG) && defined(NRF52_PLATFORM)
   // give some extra time for serial to settle so
   // boot debug messages can be seen on terminal
@@ -91,6 +103,9 @@ void setup() {
   mesh::Utils::printHex(Serial, the_mesh.self_id.pub_key, PUB_KEY_SIZE); Serial.println();
 
   command[0] = 0;
+#ifdef ETHERNET_ENABLED
+  ethernet_command[0] = 0;
+#endif
 
   sensors.begin();
 
@@ -100,6 +115,10 @@ void setup() {
   ui_task.begin(the_mesh.getNodePrefs(), FIRMWARE_BUILD_DATE, FIRMWARE_VERSION);
 #endif
 
+#ifdef ETHERNET_ENABLED
+  ethernet_start_task();
+#endif
+
   // send out initial zero hop Advertisement to the mesh
 #if ENABLE_ADVERT_ON_BOOT == 1
   the_mesh.sendSelfAdvertisement(16000, false);
@@ -109,6 +128,7 @@ void setup() {
 }
 
 void loop() {
+  // Handle Serial CLI
   int len = strlen(command);
   while (Serial.available() && len < sizeof(command)-1) {
     char c = Serial.read();
@@ -127,7 +147,14 @@ void loop() {
     Serial.print('\n');
     command[len - 1] = 0;  // replace newline with C string null terminator
     char reply[160];
+    reply[0] = 0;
+#ifdef ETHERNET_ENABLED
+    if (!ethernet_handle_command(command, reply)) {
+      the_mesh.handleCommand(0, command, reply);
+    }
+#else
     the_mesh.handleCommand(0, command, reply);  // NOTE: there is no sender_timestamp via serial!
+#endif
     if (reply[0]) {
       Serial.print("  -> "); Serial.println(reply);
     }
@@ -135,7 +162,20 @@ void loop() {
     command[0] = 0;  // reset command buffer
   }
 
-#if defined(PIN_USER_BTN) && defined(_SEEED_SENSECAP_SOLAR_H_)
+#ifdef ETHERNET_ENABLED
+  ethernet_loop_maintain();
+  if (ethernet_read_line(ethernet_command, sizeof(ethernet_command))) {
+    char reply[160];
+    reply[0] = 0;
+    if (!ethernet_handle_command(ethernet_command, reply)) {
+      the_mesh.handleCommand(0, ethernet_command, reply);
+    }
+    ethernet_send_reply(reply);
+    ethernet_command[0] = 0;
+  }
+#endif
+
+#if defined(PIN_USER_BTN) && defined(_SEEED_SENSECAP_SOLAR_H_) && !defined(DISPLAY_CLASS)
   // Hold the user button to power off the SenseCAP Solar repeater.
   int btnState = digitalRead(PIN_USER_BTN);
   if (btnState == LOW) {
@@ -157,6 +197,9 @@ void loop() {
 #endif
   rtc_clock.tick();
 
+#ifdef HAS_EXTERNAL_WATCHDOG
+  external_watchdog.loop();
+#endif
   if (the_mesh.getNodePrefs()->powersaving_enabled && !the_mesh.hasPendingWork()) {
 #if defined(NRF52_PLATFORM)
     board.sleep(0); // nrf ignores seconds param, sleeps whenever possible