fix(companion): CLI NaN, APC on TX changes, tz-aware alarm, late ACKs, ping timeout and widths, TX limits

- set af / dutycycle / rxdelay reject nan.
- A TX power change from the app or CLI re-baselines APC.
- CMD_SET_RADIO_PARAMS stores repeat as 0/1.
- The alarm reschedules itself when the time zone changes.
- A late ACK for an earlier DM attempt marks it delivered.
- A new auto-advert interval counts from the last advert.
- Both UIs take the TX power range from radioctl, up to MAX_LORA_TX_POWER
  (30 dBm on the GAT562 30S).
- The ping timeout comes from the airtime; 3-byte path hash mode pings with
  4-byte trace hashes, and trace flags are right for width 4.

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

examples/companion_radio/ui-lvgl/NodesView.h

@@ -449,7 +449,7 @@ void UITask::refreshNode() {
       setTextFmt(_node_ping, "Ping %lu ms  -  SNR out %.1f  back %.1f", (unsigned long)rtt,
                             out / 4.0f, back / 4.0f);
       _pinging = false;
-    } else if (millis() - _ping_started_ms > 3000) {
+    } else if (millis() - _ping_started_ms > _core->ping.timeoutMs()) {
       _core->ping.clear();
       setText(_node_ping, "Ping: no reply");
       _pinging = false;
@@ -472,8 +472,7 @@ void UITask::nodeAction(uint8_t action) {
         _next_nearby_ms = millis() + 250;
         lv_label_set_text(_node_ping, "Pinging...");
       } else {
-        lv_label_set_text(_node_ping, r == PingEngine::UNSUPPORTED ? "Ping needs 1-2 byte path hashes"
-                                                                   : "Ping failed");
+        lv_label_set_text(_node_ping, "Ping failed");
       }
       break;
     }