diff --git a/app/src/main/java/org/dueattendant149/bookreader/ServerSettingsViewModel.kt b/app/src/main/java/org/dueattendant149/bookreader/ServerSettingsViewModel.kt
index eaaf09a..ecc6ba5 100644
--- a/app/src/main/java/org/dueattendant149/bookreader/ServerSettingsViewModel.kt
+++ b/app/src/main/java/org/dueattendant149/bookreader/ServerSettingsViewModel.kt
@@ -22,6 +22,8 @@ class ServerSettingsViewModel
     @Inject
     constructor(
         private val serverSettings: ServerSettings,
+        private val bookshelfClientFactory: org.dueattendant149.bookreader.data.remote.bookshelfapi.BookshelfApiClientFactory,
+        private val absClientFactory: org.dueattendant149.bookreader.data.remote.audiobookshelf.AudiobookshelfApiClientFactory,
     ) : ViewModel() {
 
         private val _uiState = MutableStateFlow(ServerSettingsUiState())
@@ -52,6 +54,8 @@ class ServerSettingsViewModel
                 serverSettings.setBookshelfUrl(_uiState.value.bookshelfUrl.trim())
                 serverSettings.setAbsUrl(_uiState.value.absUrl.trim())
                 serverSettings.setAbsToken(_uiState.value.absToken.trim())
+                bookshelfClientFactory.clearCache()
+                absClientFactory.clearCache()
                 _uiState.value = _uiState.value.copy(saved = true)
             }
         }
diff --git a/app/src/main/java/org/dueattendant149/bookreader/data/settings/ServerSettings.kt b/app/src/main/java/org/dueattendant149/bookreader/data/settings/ServerSettings.kt
index 4bb5b4e..535c1ae 100644
--- a/app/src/main/java/org/dueattendant149/bookreader/data/settings/ServerSettings.kt
+++ b/app/src/main/java/org/dueattendant149/bookreader/data/settings/ServerSettings.kt
@@ -12,10 +12,10 @@ private const val KEY_BOOKSHELF_URL = "bookshelf_url"
 private const val KEY_ABS_URL = "abs_url"
 private const val KEY_ABS_TOKEN = "abs_token"
 
-/**
- * Minimal server URL/token storage. Replaces the full DataStore-based settings
- * from Book's Story for Phase 2 backend scaffolding.
- */
+private const val DEFAULT_BOOKSHELF_URL = "https://books.dueattendant149.org/"
+private const val DEFAULT_ABS_URL = "https://books.dueattendant149.org/"
+private const val DEFAULT_ABS_TOKEN = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiI5ZmFhZTFiYS1mYTdiLTQwNjgtYWY1NC05YmZmZmQ1MzE1MTAiLCJ1c2VybmFtZSI6InZsYWRpayIsImlhdCI6MTc4MDI2OTY0NH0.bf7XvvcKQnnr0PCj8hSa-5n4PrsW4POTns_pj5TkncU"
+
 @Singleton
 class ServerSettings
     @Inject
@@ -24,21 +24,34 @@ class ServerSettings
     ) {
         private val prefs: SharedPreferences = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
 
-        fun getBookshelfUrl(): String? = prefs.getString(KEY_BOOKSHELF_URL, null)
+        init {
+            // Pre-populate defaults for homelab if not set
+            if (!prefs.contains(KEY_BOOKSHELF_URL)) {
+                prefs.edit { putString(KEY_BOOKSHELF_URL, DEFAULT_BOOKSHELF_URL) }
+            }
+            if (!prefs.contains(KEY_ABS_URL)) {
+                prefs.edit { putString(KEY_ABS_URL, DEFAULT_ABS_URL) }
+            }
+            if (!prefs.contains(KEY_ABS_TOKEN)) {
+                prefs.edit { putString(KEY_ABS_TOKEN, DEFAULT_ABS_TOKEN) }
+            }
+        }
+
+        fun getBookshelfUrl(): String? = prefs.getString(KEY_BOOKSHELF_URL, DEFAULT_BOOKSHELF_URL)
 
         fun setBookshelfUrl(url: String) {
-            prefs.edit { putString(KEY_BOOKSHELF_URL, url) }
+            prefs.edit { putString(KEY_BOOKSHELF_URL, url.ifBlank { DEFAULT_BOOKSHELF_URL }) }
         }
 
-        fun getAbsUrl(): String? = prefs.getString(KEY_ABS_URL, null)
+        fun getAbsUrl(): String? = prefs.getString(KEY_ABS_URL, DEFAULT_ABS_URL)
 
         fun setAbsUrl(url: String) {
-            prefs.edit { putString(KEY_ABS_URL, url) }
+            prefs.edit { putString(KEY_ABS_URL, url.ifBlank { DEFAULT_ABS_URL }) }
         }
 
-        fun getAbsToken(): String? = prefs.getString(KEY_ABS_TOKEN, null)
+        fun getAbsToken(): String? = prefs.getString(KEY_ABS_TOKEN, DEFAULT_ABS_TOKEN)
 
         fun setAbsToken(token: String) {
             prefs.edit { putString(KEY_ABS_TOKEN, token) }
         }
-    }
+    }
\ No newline at end of file