test(android): LibraryViewModelTest expects ErrorCopy generic fallback

The error test asserted the raw exception text leaked into the UI
state — exactly the behaviour ErrorCopy removes. An
IllegalStateException is neither HttpException nor IOException, so
it maps to the generic "Something went wrong." Updated the
assertion to the new contract and dropped the now-unused
assertTrue import.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

android/app/src/test/java/com/fabledsword/minstrel/library/ui/LibraryViewModelTest.kt

@@ -16,7 +16,6 @@ import kotlinx.coroutines.test.runTest
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.extension.ExtendWith
 import kotlin.test.assertEquals
-import kotlin.test.assertTrue
 
 @ExtendWith(MainDispatcherExtension::class)
 class LibraryViewModelTest {
@@ -100,7 +99,9 @@ class LibraryViewModelTest {
 
         vm.uiState.test {
             val error = awaitItem() as LibraryUiState.Error
-            assertTrue(error.message.contains("DAO blew up"))
+            // ErrorCopy maps a non-HTTP/non-IO throwable to the generic
+            // fallback rather than leaking the raw exception text.
+            assertEquals("Something went wrong.", error.message)
             cancelAndConsumeRemainingEvents()
         }
     }