Remove companion object from RemoteConfigLoader

Objects cannot have companion objects in Kotlin. Moved TAG constant
to top-level instead.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/src/main/kotlin/uk/silverlabs/silverdroid/config/RemoteConfigLoader.kt

@@ -8,6 +8,8 @@ import kotlinx.serialization.json.Json
 import java.net.HttpURLConnection
 import java.net.URL
 
+private const val TAG = "RemoteConfigLoader"
+
 /**
  * Loads configuration from remote AppStore server
  */
@@ -107,8 +109,4 @@ object RemoteConfigLoader {
             }
         }
     }
-
-    companion object {
-        private const val TAG = "RemoteConfigLoader"
-    }
 }