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/l10n/app_localizations_sl.dart

@@ -319,6 +319,10 @@ class AppLocalizationsSl extends AppLocalizations {
   String get settings_aboutDescription =>
       'Odprtokodni Flutter klient za naprave za LoRa omrežje MeshCore.';
 
+  @override
+  String get settings_aboutOpenMeteoAttribution =>
+      'Podatki o višini LOS: Open-Meteo (CC BY 4.0)';
+
   @override
   String get settings_infoName => 'Ime';
 
@@ -615,6 +619,15 @@ class AppLocalizationsSl extends AppLocalizations {
   @override
   String get appSettings_offlineMapCache => 'Shramba zemljevidov brez povezave';
 
+  @override
+  String get appSettings_unitsTitle => 'Enote';
+
+  @override
+  String get appSettings_unitsMetric => 'Metrična (m/km)';
+
+  @override
+  String get appSettings_unitsImperial => 'Imperialno (ft / mi)';
+
   @override
   String get appSettings_noAreaSelected => 'Območje ni izbrano';
 
@@ -1231,6 +1244,12 @@ class AppLocalizationsSl extends AppLocalizations {
   @override
   String get map_title => 'Mapa omrežja';
 
+  @override
+  String get map_lineOfSight => 'Linija vida';
+
+  @override
+  String get map_losScreenTitle => 'Linija vida';
+
   @override
   String get map_noNodesWithLocation =>
       'Nihče od notranjih elementov nima podatkov o lokaciji.';
@@ -2712,6 +2731,116 @@ class AppLocalizationsSl extends AppLocalizations {
   @override
   String get pathTrace_clearTooltip => 'Počisti pot';
 
+  @override
+  String get losSelectStartEnd => 'Izberite začetno in končno vozlišče za LOS.';
+
+  @override
+  String losRunFailed(String error) {
+    return 'Preverjanje vidnega polja ni uspelo: $error';
+  }
+
+  @override
+  String get losClearAllPoints => 'Počisti vse točke';
+
+  @override
+  String get losRunToViewElevationProfile =>
+      'Zaženite LOS za ogled višinskega profila';
+
+  @override
+  String get losMenuTitle => 'LOS meni';
+
+  @override
+  String get losMenuSubtitle =>
+      'Tapnite vozlišča ali dolgo pritisnite na zemljevid za točke po meri';
+
+  @override
+  String get losShowDisplayNodes => 'Pokaži prikazna vozlišča';
+
+  @override
+  String get losCustomPoints => 'Točke po meri';
+
+  @override
+  String losCustomPointLabel(int index) {
+    return 'Po meri $index';
+  }
+
+  @override
+  String get losPointA => 'Točka A';
+
+  @override
+  String get losPointB => 'Točka B';
+
+  @override
+  String losAntennaA(String value, String unit) {
+    return 'Antena A: $value $unit';
+  }
+
+  @override
+  String losAntennaB(String value, String unit) {
+    return 'Antena B: $value $unit';
+  }
+
+  @override
+  String get losRun => 'Zaženi LOS';
+
+  @override
+  String get losNoElevationData => 'Ni podatkov o višini';
+
+  @override
+  String losProfileClear(
+    String distance,
+    String distanceUnit,
+    String clearance,
+    String heightUnit,
+  ) {
+    return '$distance $distanceUnit, čisti LOS, najmanjša razdalja $clearance $heightUnit';
+  }
+
+  @override
+  String losProfileBlocked(
+    String distance,
+    String distanceUnit,
+    String obstruction,
+    String heightUnit,
+  ) {
+    return '$distance $distanceUnit, blokiral $obstruction $heightUnit';
+  }
+
+  @override
+  String get losStatusChecking => 'LOS: preverjam ...';
+
+  @override
+  String get losStatusNoData => 'LOS: ni podatkov';
+
+  @override
+  String losStatusSummary(int clear, int total, int blocked, int unknown) {
+    return 'LOS: $clear/$total jasno, $blocked blokirano, $unknown neznano';
+  }
+
+  @override
+  String get losErrorElevationUnavailable =>
+      'Podatki o nadmorski višini niso na voljo za enega ali več vzorcev.';
+
+  @override
+  String get losErrorInvalidInput =>
+      'Neveljavni podatki o točkah/višini za izračun LOS.';
+
+  @override
+  String get losRenameCustomPoint => 'Preimenujte točko po meri';
+
+  @override
+  String get losPointName => 'Ime točke';
+
+  @override
+  String get losShowPanelTooltip => 'Pokaži ploščo LOS';
+
+  @override
+  String get losHidePanelTooltip => 'Skrij ploščo LOS';
+
+  @override
+  String get losElevationAttribution =>
+      'Podatki o višini: Open-Meteo (CC BY 4.0)';
+
   @override
   String get contacts_pathTrace => 'Sledenje poti';