Added Line Of Sight Feature for repeater placement, Added app wide Units Setting (#198)

* feat: add LOS workflow, global units, l10n cleanup, and mobile UI overflow fixes

Squashes prior PR commits into one changeset including: LOS map/service/tests, global metric/imperial unit system adoption, notification/BLE safety fixes, app-wide localization backfill/mojibake cleanup, and responsive UI title/overflow hardening.

* l10n: revert unrelated locale churn for LOS feature

* feat: keep LOS with app-wide unit settings

* fix: resolve post-merge app bar/import analyzer errors

* style: format screen files for CI

lib/widgets/adaptive_app_bar_title.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/material.dart';
+
+class AdaptiveAppBarTitle extends StatelessWidget {
+  final String text;
+
+  const AdaptiveAppBarTitle(this.text, {super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return LayoutBuilder(
+      builder: (context, constraints) => SizedBox(
+        width: constraints.maxWidth,
+        child: FittedBox(fit: BoxFit.scaleDown, child: Text(text, maxLines: 1)),
+      ),
+    );
+  }
+}