build: upgrade to Kotlin 2.4.21 and Compose Multiplatform 1.12.2

Several dependencies (coil 3.5.0, millennium, mqtt/ditchoom, composeunstyled,
markdown-renderer, composewebview, kmp-zip, filekit) now ship klibs built with
Kotlin 2.4, which Kotlin/Native 2.3 refuses to read, breaking the iOS build.

- Bump zipline (1.28.0), mokkery (3.5.1) and ksp (2.3.12) for the new compiler
- Type TOP_LEVEL_ROUTES as Set<NavKey> (Kotlin 2.4 inferred Set<Any>)
- Import ComposeApp in iOSApp.swift, which uses ExternalUriHandler

composeApp/src/commonMain/kotlin/org/spotube/spotube/core/navigation/NavigationState.kt

@@ -40,7 +40,7 @@ import kotlinx.serialization.modules.SerializersModule
 import kotlinx.serialization.modules.polymorphic
 import org.koin.core.component.KoinComponent
 
-val TOP_LEVEL_ROUTES = setOf(
+val TOP_LEVEL_ROUTES: Set<NavKey> = setOf(
     Routes.Home,
     Routes.Search,
     Routes.Library,

gradle/libs.versions.toml

@@ -28,7 +28,7 @@ appdirs = "1.5.0"
 cache4k = "0.14.0"
 carApp = "1.7.0"
 composeHotReload = "1.2.0"
-composeMultiplatform = "1.11.1"
+composeMultiplatform = "1.12.2"
 coil = "3.5.0"
 composeShimmer = "1.5.0"
 desugar_jdk_libs = "2.1.5"
@@ -37,7 +37,7 @@ jna = "5.18.1"
 junit = "4.13.2"
 kermit = "2.1.0"
 kmpZip = "1.0.0"
-kotlin = "2.3.21"
+kotlin = "2.4.21"
 kotlinx-coroutines = "1.11.0"
 kotlinx-io = "0.9.1"
 kotlinx-serialization-json = "1.11.0"
@@ -52,7 +52,7 @@ nucleusNucleusApplication = "2.5.18"
 semver = "2.1.0"
 vlcj = "4.12.1"
 vlcjNative = "4.12.0"
-ziplineVersion = "1.27.0"
+ziplineVersion = "1.28.0"
 ktor = "3.5.1"
 dnssdkt = "1.1.0"
 runner = "1.7.0"
@@ -68,7 +68,7 @@ feather-icons = "1.1.1"
 kotlinx-datetime = "0.8.0"
 media3 = "1.10.1"
 androidx-datastore = "1.2.1"
-ksp = "2.3.5"
+ksp = "2.3.12"
 spotube-gradle = "0.1.2"
 cryptography = "0.6.0"
 reorderable = "3.1.0"
@@ -76,7 +76,7 @@ vlcjBundler = "0.2.0"
 vanniktechMavenPublish = "0.37.0"
 uniffi = "0.3.7"
 kotlinx-atomicfu = "0.33.0"
-mokkery = "3.3.0"
+mokkery = "3.5.1"
 
 [libraries]
 appdirs = { module = "net.harawata:appdirs", version.ref = "appdirs" }

iosApp/iosApp/iOSApp.swift

@@ -14,6 +14,7 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 import SwiftUI
+import ComposeApp
 
 @main
 struct iOSApp: App {