Add SNRIndicator to AppBar and refactor BatteryIndicator layout

lib/widgets/battery_indicator.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:meshcore_open/widgets/snr_indicator.dart';
 
 import '../connector/meshcore_connector.dart';
 
@@ -43,7 +42,6 @@ class _BatteryIndicatorState extends State<BatteryIndicator> {
   Widget build(BuildContext context) {
     final percent = widget.connector.batteryPercent;
     final millivolts = widget.connector.batteryMillivolts;
-    final directRepeaters = widget.connector.directRepeaters;
 
     if (millivolts == null) {
       return const SizedBox.shrink();
@@ -57,20 +55,6 @@ class _BatteryIndicatorState extends State<BatteryIndicator> {
     }
 
     final batteryUi = batteryUiForPercent(percent);
-    final directBestRepeaters = List.of(directRepeaters)
-      ..sort((a, b) {
-        final dateCompare = b.lastUpdated.compareTo(a.lastUpdated);
-        if (dateCompare != 0) return dateCompare;
-        return (b.snr).compareTo(a.snr);
-      });
-    final directRepeater = directBestRepeaters.isEmpty
-        ? null
-        : directBestRepeaters.first;
-
-    final snrUi = snrUiFromSNR(
-      directBestRepeaters.isNotEmpty ? directRepeater!.snr : null,
-      widget.connector.currentSf,
-    );
 
     return InkWell(
       onTap: () {
@@ -103,57 +87,9 @@ class _BatteryIndicatorState extends State<BatteryIndicator> {
                 ),
               ],
             ),
-            const SizedBox(width: 8),
-            Padding(
-              padding: const EdgeInsets.only(top: 2),
-              child: Column(
-                mainAxisSize: MainAxisSize.min,
-                children: [
-                  Column(
-                    mainAxisSize: MainAxisSize.min,
-                    children: [
-                      Icon(snrUi.icon, size: 18, color: snrUi.color),
-                      Text(
-                        snrUi.text,
-                        style: TextStyle(fontSize: 12, color: snrUi.color),
-                      ),
-                    ],
-                  ),
-                  if (directRepeater != null)
-                    Text(
-                      '${directRepeaters.length}: ${directRepeater.pubkeyFirstByte.toRadixString(16).padLeft(2, '0')}: ${_formatLastUpdated(directRepeater.lastUpdated)}',
-                      style: TextStyle(
-                        fontSize: 12,
-                        fontWeight: FontWeight.w500,
-                        color: Colors.grey,
-                      ),
-                      maxLines: 1,
-                      overflow: TextOverflow.ellipsis,
-                    ),
-                ],
-              ),
-            ),
           ],
         ),
       ),
     );
   }
-
-  String _formatLastUpdated(DateTime lastSeen) {
-    final now = DateTime.now();
-    final diff = now.difference(lastSeen);
-
-    if (diff.isNegative || diff.inMinutes < 1) {
-      return "${diff.inSeconds}s";
-    }
-    if (diff.inMinutes < 60) {
-      return "${diff.inMinutes}m";
-    }
-    if (diff.inHours < 24) {
-      final hours = diff.inHours;
-      return hours == 1 ? "1h" : "${hours}hs";
-    }
-    final days = diff.inDays;
-    return days == 1 ? "1d" : "${days}ds";
-  }
 }