refactor(network): simplify PlatformConfig logic for URL resolution

- Streamlined `resolveApiBaseUrl` and `resolveKeycloakUrl` by introducing `globalScope` as a reusable property.
- Improved readability and maintainability by reducing redundant code and enhancing structure.
- Removed outdated comments and polished behavior for fallback mechanisms.

Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>

frontend/core/navigation/src/commonMain/kotlin/at/mocode/frontend/core/navigation/DeepLinkHandler.kt

@@ -25,7 +25,6 @@ class DeepLinkHandler(
     return processDeepLink(parsed)
   }
 
-  // TODO: Implement deep link processing logic
   private fun processDeepLink(deepLink: DeepLink): Boolean {
     val route = cleanRoute(deepLink.route)
 

frontend/core/network/src/jsMain/kotlin/at/mocode/frontend/core/network/PlatformConfig.js.kt

@@ -4,12 +4,14 @@ import kotlinx.browser.window
 
 @Suppress("UnsafeCastFromDynamic", "EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
 actual object PlatformConfig {
+
+  private val globalScope: dynamic
+    get() = js("typeof globalThis !== 'undefined' ? globalThis : (typeof window !== 'undefined' ? window : (typeof self !== 'undefined' ? self : {}))")
+
   actual fun resolveApiBaseUrl(): String {
-    // 1) Prefer a global JS variable (can be injected by index.html or nginx)
+    // 1) Prefer a global JS variable (injected by main.kt via AppConfig)
-    val global =
-      js("typeof globalThis !== 'undefined' ? globalThis : (typeof window !== 'undefined' ? window : (typeof self !== 'undefined' ? self : {}))")
     val fromGlobal = try {
-      (global.API_BASE_URL as? String)?.trim().orEmpty()
+      (globalScope.API_BASE_URL as? String)?.trim().orEmpty()
     } catch (_: dynamic) {
       ""
     }
@@ -17,20 +19,17 @@ actual object PlatformConfig {
       console.log("[PlatformConfig] Resolved API_BASE_URL from global: $fromGlobal")
       return fromGlobal.removeSuffix("/")
     }
-
     // 2) Try window location origin (same origin gateway/proxy setup)
     val origin = try {
       window.location.origin
     } catch (_: dynamic) {
       null
     }
-
     if (!origin.isNullOrBlank()) {
       val resolvedUrl = origin.removeSuffix("/") + "/api"
       console.log("[PlatformConfig] Resolved API_BASE_URL from window.location.origin: $resolvedUrl")
       return resolvedUrl
     }
-
     // 3) Fallback to the local gateway directly (e.g., for tests without a window)
     val fallbackUrl = "http://localhost:8081/api"
     console.log("[PlatformConfig] Fallback API_BASE_URL: $fallbackUrl")
@@ -38,11 +37,9 @@ actual object PlatformConfig {
   }
 
   actual fun resolveKeycloakUrl(): String {
-    // 1) Prefer a global JS variable injected by index.html at runtime
+    // 1) Prefer a global JS variable (injected by main.kt via AppConfig)
-    val global =
-      js("typeof globalThis !== 'undefined' ? globalThis : (typeof window !== 'undefined' ? window : (typeof self !== 'undefined' ? self : {}))")
     val fromGlobal = try {
-      (global.KEYCLOAK_URL as? String)?.trim().orEmpty()
+      (globalScope.KEYCLOAK_URL as? String)?.trim().orEmpty()
     } catch (_: dynamic) {
       ""
     }
@@ -50,7 +47,6 @@ actual object PlatformConfig {
       console.log("[PlatformConfig] Resolved KEYCLOAK_URL from global: $fromGlobal")
       return fromGlobal.removeSuffix("/")
     }
-
     // 2) Derive from window.location.hostname with default Keycloak port
     val hostname = try {
       window.location.hostname
@@ -62,7 +58,6 @@ actual object PlatformConfig {
       console.log("[PlatformConfig] Resolved KEYCLOAK_URL from window.location.hostname: $resolvedUrl")
       return resolvedUrl
     }
-
     // 3) Fallback for local development
     val fallbackUrl = "http://localhost:8180"
     console.log("[PlatformConfig] Fallback KEYCLOAK_URL: $fallbackUrl")