Hardcode default linkding server — skip onboarding on fresh install

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Marks/MarksApp.swift

@@ -1,21 +1,22 @@
 import SwiftUI
 
+private let defaultConfig = ServerConfig(
+    host: "linkding-production-f7e0.up.railway.app",
+    port: nil,
+    path: "",
+    token: "RuK48O4LSD6AIKA4SlXYqxU3Ig71slvJGFbk6EanVeT9dlXA#ojHSAFWIq_B3MOBGkoARE5VnGnqeg2ehKddeEQlyvMI",
+    useHttps: true
+)
+
 @main
 struct MarksApp: App {
-    @State private var serverConfig: ServerConfig? = ServerConfig.load()
+    @State private var serverConfig: ServerConfig = ServerConfig.load() ?? defaultConfig
 
     var body: some Scene {
         WindowGroup {
-            if let config = serverConfig {
-                MainContainer(config: config) {
-                    config.delete()
-                    serverConfig = nil
-                }
-            } else {
-                OnboardingView { newConfig in
-                    newConfig.save()
-                    serverConfig = newConfig
-                }
+            MainContainer(config: serverConfig) {
+                defaultConfig.save()
+                serverConfig = defaultConfig
             }
         }
     }