Add analytics tracking, overview PDF export, and charger updates

Add first launch event, share tracking for overview PDF and diagram
exports. Add SystemOverviewPDFExporter for A4 PDF generation. Update
charger model with new configuration fields and localization for all
5 languages. Refresh app icon assets and CLAUDE.md build instructions.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Cable/Chargers/ChargerConfiguration.swift

@@ -11,6 +11,7 @@ struct ChargerConfiguration: Identifiable, Hashable {
     var iconName: String
     var colorName: String
     var system: ElectricalSystem
+    var powerSourceType: SavedCharger.PowerSourceType
 
     init(
         id: UUID = UUID(),
@@ -21,7 +22,8 @@ struct ChargerConfiguration: Identifiable, Hashable {
         maxPowerWatts: Double = 0.0,
         iconName: String = "bolt.fill",
         colorName: String = "orange",
-        system: ElectricalSystem
+        system: ElectricalSystem,
+        powerSourceType: SavedCharger.PowerSourceType = .shore
     ) {
         self.id = id
         self.name = name
@@ -32,6 +34,7 @@ struct ChargerConfiguration: Identifiable, Hashable {
         self.iconName = iconName
         self.colorName = colorName
         self.system = system
+        self.powerSourceType = powerSourceType
     }
 
     init(savedCharger: SavedCharger, system: ElectricalSystem) {
@@ -44,6 +47,7 @@ struct ChargerConfiguration: Identifiable, Hashable {
         self.iconName = savedCharger.iconName
         self.colorName = savedCharger.colorName
         self.system = system
+        self.powerSourceType = savedCharger.sourceType
     }
 
     var effectivePowerWatts: Double {
@@ -62,6 +66,7 @@ struct ChargerConfiguration: Identifiable, Hashable {
         savedCharger.iconName = iconName
         savedCharger.colorName = colorName
         savedCharger.system = system
+        savedCharger.powerSourceType = powerSourceType.rawValue
         savedCharger.timestamp = Date()
     }
 }