Add default fallback city (fixes #199), add beginning of UpdateService

Weather: always fallback to "Tokyo" if the city name is empty
UpdateService: simple versioning control

Services/LocationService.qml

@@ -136,13 +136,17 @@ Singleton {
       Logger.log("Location", "Location changed from", adapter.name, "to", Settings.data.location.name)
     }
 
+    // Ensure we always have a location name, fallback to default if empty
+    const locationName = Settings.data.location.name && Settings.data.location.name.trim(
+                         ) !== "" ? Settings.data.location.name : "Tokyo"
+
     if ((adapter.latitude === "") || (adapter.longitude === "") || locationChanged) {
 
-      _geocodeLocation(Settings.data.location.name, function (latitude, longitude, name, country) {
-        Logger.log("Location", "Geocoded", Settings.data.location.name, "to:", latitude, "/", longitude)
+      _geocodeLocation(locationName, function (latitude, longitude, name, country) {
+        Logger.log("Location", "Geocoded", locationName, "to:", latitude, "/", longitude)
 
         // Save location name
-        adapter.name = Settings.data.location.name
+        adapter.name = locationName
 
         // Save GPS coordinates
         adapter.latitude = latitude.toString()

Services/UpdateService.qml

@@ -0,0 +1,30 @@
+pragma Singleton
+
+import QtQuick
+import Quickshell
+import qs.Commons
+
+Singleton {
+  id: root
+
+  // Public properties
+  property string baseVersion: "v2.4.1"
+  property bool isRelease: false
+
+  property string currentVersion: isRelease ? baseVersion : baseVersion + "-dev"
+
+  // Internal helpers
+  function getVersion() {
+    return root.currentVersion
+  }
+
+  function checkForUpdates() {
+    // TODO: Implement update checking logic
+    Logger.log("UpdateService", "Checking for updates...")
+  }
+
+  function init() {
+    // Ensure the singleton is created
+    Logger.log("UpdateService", "Version:", root.currentVersion)
+  }
+}