Fix TV episode navigation and live resume freshness

app/src/main/java/com/github/damontecres/wholphin/services/NavigationManager.kt

@@ -24,6 +24,13 @@ class NavigationManager
             log()
         }
 
+        /** Replace only the current page, preserving every parent entry. */
+        fun replaceTop(destination: Destination) {
+            if (backStack.isEmpty()) backStack.add(destination)
+            else backStack[backStack.lastIndex] = destination
+            log()
+        }
+
         /**
          * Go to the specified [Destination], but reset the back stack to Home first
          */

app/src/main/java/com/github/damontecres/wholphin/ui/playback/PlayExternalPage.kt

@@ -82,9 +82,11 @@ class PlayExternalViewModel
     ) : ViewModel() {
         val launched = savedStateHandle.getMutableStateFlow("launched", false)
         val state = MutableStateFlow(PlayExternalState())
+        private var watchScope: String? = null
 
         fun init(destination: Destination) {
             Timber.v("init called: %s", destination)
+            watchScope = "${serverRepository.currentServer?.id}:${serverRepository.currentUser?.id}"
             state.update { it.copy(loading = LoadingState.Loading) }
             viewModelScope.launchDefault {
                 val prefs = userPreferencesService.getCurrent()
@@ -358,6 +360,7 @@ class PlayExternalViewModel
                                     failed = false,
                                 ),
                             )
+                            watchScope?.let { com.github.damontecres.wholphin.util.PlaybackWatchState.stopped(context, it) }
                         }
                     } else {
                         Timber.w(

app/src/main/java/com/github/damontecres/wholphin/ui/playback/PlaybackViewModel.kt

@@ -830,10 +830,12 @@ class PlaybackViewModel
                         }
 
                         val playbackItemState = PlaybackItemState(playback)
+                        val watchScope = "${serverRepository.currentServer?.id}:${serverRepository.currentUser?.id}"
                         val activityListener =
                             TrackActivityPlaybackListener(
                                 api = api,
                                 player = player,
+                                onStopped = { com.github.damontecres.wholphin.util.PlaybackWatchState.stopped(context, watchScope) },
                                 getState = { playbackItemState },
                             )
                         player.addListener(activityListener)

app/src/main/java/com/github/damontecres/wholphin/util/PlaybackWatchState.kt

@@ -0,0 +1,27 @@
+package com.github.damontecres.wholphin.util
+
+import android.content.Context
+import org.justinvisser.wolfskin.conductarr.FileCacheStore
+import java.io.File
+import java.io.IOException
+import timber.log.Timber
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+
+/** Only an acknowledged stop invalidates the captured server/user's watch projections. */
+object PlaybackWatchState {
+    private val mutableRevisions = MutableStateFlow<Map<String, Long>>(emptyMap())
+    val revisions = mutableRevisions.asStateFlow()
+
+    /** Remove persisted watch grids before publishing the captured user's acknowledgement. */
+    fun stopped(context: Context, scope: String) {
+        try {
+            FileCacheStore(File(context.filesDir, "wolfskin-library-cache")).clear(scope)
+        } catch (exception: IOException) {
+            Timber.w(exception, "Could not invalidate playback watch snapshots")
+        }
+        val time = System.currentTimeMillis()
+        mutableRevisions.update { previous -> previous + (scope to maxOf(time, (previous[scope] ?: 0L) + 1L)) }
+    }
+}

app/src/main/java/com/github/damontecres/wholphin/util/TrackActivityPlaybackListener.kt

@@ -7,6 +7,8 @@ import com.github.damontecres.wholphin.ui.launchIO
 import com.github.damontecres.wholphin.ui.playback.CurrentPlayback
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.withContext
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import org.jellyfin.sdk.api.client.ApiClient
 import org.jellyfin.sdk.api.client.extensions.playStateApi
 import org.jellyfin.sdk.model.api.PlayMethod
@@ -31,9 +33,12 @@ import kotlin.time.Duration.Companion.seconds
 class TrackActivityPlaybackListener(
     private val api: ApiClient,
     private val player: Player,
+    private val onStopped: () -> Unit = {},
     private val getState: () -> PlaybackItemState?,
 ) : Player.Listener {
     private val coroutineScope = CoroutineScope(WholphinDispatchers.Main)
+    private val reports = Mutex()
+    @Volatile private var released = false
     private val task: TimerTask =
         object : TimerTask() {
             override fun run() {
@@ -70,19 +75,23 @@ class TrackActivityPlaybackListener(
 
                 val delay = 5.seconds.inWholeMilliseconds
                 // Every x seconds, check if the video is playing
-                TIMER.schedule(task, delay, delay)
+                if (!released) {
-                initialized = true
+                    TIMER.schedule(task, delay, delay)
+                    initialized = true
+                }
             }
         }
     }
 
     fun release() {
-//        player.removeListener(this)
+        if (released) return
+        released = true
         task.cancel()
         TIMER.purge()
         val position = player.currentPosition.milliseconds
+        val stoppedState = getState.invoke()
         launch("reportPlaybackStopped") {
-            getState.invoke()?.let { state ->
+            stoppedState?.let { state ->
                 Timber.v("reportPlaybackStopped for ${state.itemId} at $position")
                 if (position < Duration.ZERO) {
                     Timber.w("Negative position when reporting playback stopped: %s", position)
@@ -96,6 +105,7 @@ class TrackActivityPlaybackListener(
                         liveStreamId = state.liveStreamId,
                     ),
                 )
+                onStopped()
             }
         }
     }
@@ -117,6 +127,7 @@ class TrackActivityPlaybackListener(
 
     private fun saveActivity(position: Long) {
         launch("saveActivity") {
+            if (released) return@launch
             getState.invoke()?.let { state ->
                 val calcPosition =
                     withContext(WholphinDispatchers.Main) {
@@ -152,7 +163,7 @@ class TrackActivityPlaybackListener(
     ) {
         coroutineScope.launchIO {
             try {
-                block.invoke(this)
+                reports.withLock { block.invoke(this) }
             } catch (ex: Exception) {
                 Timber.w(ex, "Exception during %s", name)
             }

app/src/test/java/com/github/damontecres/wholphin/ui/playback/PlayExternalViewModelTest.kt

@@ -114,6 +114,7 @@ class PlayExternalViewModelTest {
         every { api.subtitleApi } returns subtitleApi
         every { api.playStateApi } returns playStateApi
         every { serverRepository.currentUser } returns null
+        every { serverRepository.currentServer } returns null
         coEvery { userLibraryApi.getItem(movie.id) } returns successResponse(movie)
         coEvery { streamChoiceService.chooseSource(any(), any()) } returns mediaSource
         coEvery { streamChoiceService.chooseSubtitleStream(any(), any(), any(), any(), any(), any()) } returns

app/src/test/java/com/github/damontecres/wholphin/util/PlaybackWatchStateTest.kt

@@ -0,0 +1,95 @@
+package com.github.damontecres.wholphin.util
+
+import android.app.Application
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.RuntimeEnvironment
+import org.robolectric.annotation.Config
+import androidx.media3.common.Player
+import io.mockk.*
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.test.*
+import org.jellyfin.sdk.api.client.ApiClient
+import org.jellyfin.sdk.api.client.extensions.playStateApi
+import org.jellyfin.sdk.api.operations.PlayStateApi
+import org.jellyfin.sdk.model.api.PlayMethod
+import com.github.damontecres.wholphin.ui.successResponse
+import org.junit.Assert.*
+import org.junit.Test
+import java.util.UUID
+import org.justinvisser.wolfskin.conductarr.FileCacheStore
+import org.justinvisser.wolfskin.conductarr.CacheEntry
+import java.io.File
+
+/** Return refresh waits for the stop write rather than racing its acknowledgement. */
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [34], application = Application::class)
+@OptIn(kotlinx.coroutines.ExperimentalCoroutinesApi::class)
+class PlaybackWatchStateTest {
+    @Test fun revisionAppearsOnlyAfterTheCapturedUsersStopIsAcknowledged() = runTest {
+        val dispatcher = StandardTestDispatcher(testScheduler)
+        val previous = WholphinDispatchers.IO
+        Dispatchers.setMain(dispatcher)
+        WholphinDispatchers.IO = dispatcher
+        val api = mockk<ApiClient>()
+        val reports = mockk<PlayStateApi>()
+        every { api.playStateApi } returns reports
+        val player = mockk<Player> { every { currentPosition } returns 751_246L }
+        val scope = "server:${UUID.randomUUID()}"
+        val another = "server:${UUID.randomUUID()}"
+        val context = RuntimeEnvironment.getApplication()
+        val cache = FileCacheStore(File(context.filesDir, "wolfskin-library-cache"))
+        val saved = CacheEntry("old progress", null, 1L, 1L, group = "library")
+        cache.write(scope, "library:movies", saved)
+        cache.write(another, "library:movies", saved)
+        val acknowledgement = CompletableDeferred<Unit>()
+        coEvery { reports.reportPlaybackStopped(any()) } coAnswers {
+            acknowledgement.await()
+            successResponse(Unit)
+        }
+        val state = PlaybackItemState(UUID.randomUUID(), PlayMethod.DIRECT_PLAY)
+        val listener = TrackActivityPlaybackListener(api, player, onStopped = { PlaybackWatchState.stopped(RuntimeEnvironment.getApplication(), scope) }, getState = { state })
+        try {
+            listener.release()
+            runCurrent()
+            assertNull(PlaybackWatchState.revisions.value[scope])
+            assertNotNull(cache.read(scope, "library:movies"))
+            acknowledgement.complete(Unit)
+            advanceUntilIdle()
+            assertNotNull(PlaybackWatchState.revisions.value[scope])
+            assertNull(PlaybackWatchState.revisions.value[another])
+            assertNull(cache.read(scope, "library:movies"))
+            assertEquals(saved, cache.read(another, "library:movies"))
+            coVerify(exactly = 1) { reports.reportPlaybackStopped(match { it.itemId == state.itemId && it.positionTicks == 7_512_460_000L }) }
+            listener.release()
+            advanceUntilIdle()
+            coVerify(exactly = 1) { reports.reportPlaybackStopped(any()) }
+        } finally {
+            WholphinDispatchers.IO = previous
+            Dispatchers.resetMain()
+        }
+    }
+
+    @Test fun failedStopDoesNotPublishAFictitiousAcknowledgement() = runTest {
+        val dispatcher = StandardTestDispatcher(testScheduler)
+        val previous = WholphinDispatchers.IO
+        Dispatchers.setMain(dispatcher)
+        WholphinDispatchers.IO = dispatcher
+        val api = mockk<ApiClient>()
+        val reports = mockk<PlayStateApi>()
+        every { api.playStateApi } returns reports
+        coEvery { reports.reportPlaybackStopped(any()) } throws java.io.IOException("Stop rejected")
+        val scope = "server:${UUID.randomUUID()}"
+        val listener = TrackActivityPlaybackListener(api, mockk<Player> { every { currentPosition } returns 751_246L },
+            onStopped = { PlaybackWatchState.stopped(RuntimeEnvironment.getApplication(), scope) }, getState = { PlaybackItemState(UUID.randomUUID(), PlayMethod.DIRECT_PLAY) })
+        try {
+            listener.release()
+            advanceUntilIdle()
+            assertNull(PlaybackWatchState.revisions.value[scope])
+        } finally {
+            WholphinDispatchers.IO = previous
+            Dispatchers.resetMain()
+        }
+    }
+}

app/src/test/java/org/justinvisser/wolfskin/tv/ConductarrHomeSurfaceTest.kt

@@ -52,8 +52,9 @@ class ConductarrHomeSurfaceTest {
                 session.select("${server.id}:${user.id}", SHARED_TOKEN, fake.url)
                 runBlocking { session.authenticate() }
                 val home = mockk<HomeReadFacade>()
-                coEvery { home.read(user.id) } returns HomeLibrary(resume = listOf(
+                coEvery { home.readWatch(user.id) } returns HomeLibrary(resume = listOf(
                     HomeTitle("00000000-0000-0000-0000-000000000010", "Jellyfin held item", "movie", held = true)))
+                coEvery { home.readLibrary(user.id) } returns HomeLibrary()
                 val cache = mockk<HomeLibraryCache>(relaxed = true)
                 every { cache.read(any()) } returns null
                 val model = WolfskinHomeViewModel(rule.activity, home, cache, NavigationManager(), WolfskinSeeAllLists(), session)

app/src/test/java/org/justinvisser/wolfskin/tv/HomeRecoveryTest.kt

@@ -43,11 +43,13 @@ class HomeRecoveryTest {
         val started = CompletableDeferred<Unit>()
         val response = CompletableDeferred<HomeLibrary>()
         val facade = mockk<HomeReadFacade>()
-        coEvery { facade.read(personA.id) } coAnswers { started.complete(Unit); response.await() }
+        coEvery { facade.readWatch(personA.id) } coAnswers { started.complete(Unit); response.await() }
+        coEvery { facade.readLibrary(any()) } returns HomeLibrary()
         val model = WolfskinHomeViewModel(context, facade, cache, NavigationManager(), WolfskinSeeAllLists(), ConductarrSession(org.justinvisser.wolfskin.conductarr.MemoryCacheStore()))
         val refresh = async(Dispatchers.IO) { model.loadLibrary(server, personA, viewerA, retry = true) }
         started.await()
         assertEquals(film.id, model.snapshot.rows.first().cards.first().id)
+        assertFalse(model.snapshot.rows.first().watchReady)
         response.completeExceptionally(IOException("fixture offline"))
         refresh.await()
         assertFalse(model.snapshot.jellyfinAvailable)
@@ -62,8 +64,9 @@ class HomeRecoveryTest {
         cache.write("${server.id}:${personA.id}", library, 1000L)
         val startedA = CompletableDeferred<Unit>()
         val responseA = CompletableDeferred<HomeLibrary>()
-        coEvery { facade.read(personA.id) } coAnswers { startedA.complete(Unit); responseA.await() }
+        coEvery { facade.readWatch(personA.id) } coAnswers { startedA.complete(Unit); responseA.await() }
-        coEvery { facade.read(personB.id) } throws IOException("fixture offline")
+        coEvery { facade.readWatch(personB.id) } throws IOException("fixture offline")
+        coEvery { facade.readLibrary(any()) } returns HomeLibrary()
         val model = WolfskinHomeViewModel(context, facade, cache, NavigationManager(), WolfskinSeeAllLists(), ConductarrSession(org.justinvisser.wolfskin.conductarr.MemoryCacheStore()))
         val requestA = async(Dispatchers.IO) { model.loadLibrary(server, personA, viewerA) }
         startedA.await()
@@ -80,7 +83,8 @@ class HomeRecoveryTest {
 
     @Test fun readableJellyfinDoesNotBecomeAnOutageWhenLocalCacheCannotBeWritten() = runBlocking {
         val facade = mockk<HomeReadFacade>()
-        coEvery { facade.read(personA.id) } returns library
+        coEvery { facade.readWatch(personA.id) } returns library
+        coEvery { facade.readLibrary(any()) } returns HomeLibrary()
         val cache = mockk<HomeLibraryCache>()
         every { cache.read(any()) } returns null
         every { cache.write(any(), any(), any()) } throws IOException("fixture disk full")
@@ -93,7 +97,8 @@ class HomeRecoveryTest {
 
     @Test fun renamedHouseholdProfileKeepsItsOwnJellyfinLibraryWithoutAConductarrIdentity() = runBlocking {
         val facade = mockk<HomeReadFacade>()
-        coEvery { facade.read(personA.id) } returns library
+        coEvery { facade.readWatch(personA.id) } returns library
+        coEvery { facade.readLibrary(any()) } returns HomeLibrary()
         val cache = mockk<HomeLibraryCache>(relaxed = true)
         every { cache.read(any()) } returns null
         val model = WolfskinHomeViewModel(context, facade, cache, NavigationManager(), WolfskinSeeAllLists(), ConductarrSession(org.justinvisser.wolfskin.conductarr.MemoryCacheStore()))

app/src/test/java/org/justinvisser/wolfskin/tv/LibrarySnapshotStoreTest.kt

@@ -48,6 +48,21 @@ class LibrarySnapshotStoreTest {
         assertFalse(reads.last().unreachable)
     }
 
+    @Test fun acknowledgedPlaybackInvalidatesOnlyOlderWatchSnapshotsBeforeTheTtl() = runBlocking {
+        var now = 1000L
+        val store = LibrarySnapshotStore(MemoryCacheStore()) { now }
+        val old = listOf(LibraryTitle("film", "Film", "movie", progress = .1f))
+        store.read("server:justin", "movies") { flowOf(old) }.toList()
+        store.read("server:mindel", "movies") { flowOf(old) }.toList()
+        now = 1002L
+        val updated = listOf(old.single().copy(progress = .6f))
+        val reads = store.read("server:justin", "movies", invalidatedAtMillis = 1001L) { flowOf(updated) }.toList()
+        assertEquals(.1f, reads.first().items.single().progress)
+        assertEquals(.6f, reads.last().items.single().progress)
+        assertEquals(updated, store.read("server:justin", "movies", invalidatedAtMillis = 1001L) { error("Already revalidated") }.toList().single().items)
+        assertEquals(old, store.read("server:mindel", "movies") { error("Other viewer stays cached") }.toList().single().items)
+    }
+
     @Test fun failedLaterChunkKeepsTheCompleteSavedCopyOrTheColdPartialWithoutSavingIt() = runBlocking {
         val partial = listOf(LibraryTitle("partial", "First film", "movie"))
         val complete = partial + LibraryTitle("last", "Last film", "movie")

app/src/test/java/org/justinvisser/wolfskin/tv/PersonSwitchThreadingTest.kt

@@ -214,8 +214,9 @@ class PersonSwitchThreadingTest {
             every { repository.currentUser } returns user
             every { repository.currentServer } returns server
             val home = mockk<org.justinvisser.wolfskin.tv.read.HomeReadFacade>()
-            coEvery { home.read(user.id) } returns org.justinvisser.wolfskin.design.HomeLibrary(resume = listOf(
+            coEvery { home.readWatch(user.id) } returns org.justinvisser.wolfskin.design.HomeLibrary(resume = listOf(
                 org.justinvisser.wolfskin.design.HomeTitle("justin-film", "Justin film", "movie", held = true)))
+            coEvery { home.readLibrary(user.id) } returns org.justinvisser.wolfskin.design.HomeLibrary()
             val cache = mockk<org.justinvisser.wolfskin.tv.read.HomeLibraryCache>(relaxed = true)
             every { cache.read(any()) } returns null
             val homeModel = WolfskinHomeViewModel(context, home, cache, mockk(relaxed = true), WolfskinSeeAllLists(), conductarr)

app/src/test/java/org/justinvisser/wolfskin/tv/PlaybackUserData.kt

@@ -0,0 +1,9 @@
+package org.justinvisser.wolfskin.tv
+
+import org.jellyfin.sdk.model.api.UserItemDataDto
+import java.util.UUID
+
+/** Checkpoints use the SDK's required identity and watch fields. */
+internal fun playbackUserData(itemId: UUID, ticks: Long, played: Boolean = false, playCount: Int = 0): UserItemDataDto =
+    UserItemDataDto(playbackPositionTicks = ticks, playCount = playCount, isFavorite = false,
+        lastPlayedDate = null, played = played, key = "", itemId = itemId)

app/src/test/java/org/justinvisser/wolfskin/tv/PlayerHandoffTest.kt

@@ -58,7 +58,7 @@ class PlayerHandoffTest {
     @Test fun failedPlaybackReadLeavesSavedHomeFocusedAndDrawsTheExactOfflineToast() {
         val snapshot = HomeFixture(rule.activity).snapshot("mindel", "offline")
         val title = snapshot.rows.first().cards.first()
-        coEvery { facade.playableId(user.id, title) } throws IOException("fixture offline")
+        coEvery { facade.preparePlayback(user.id, title) } throws IOException("fixture offline")
         rule.setContent { WolfskinTheme {
             ShellSurface(shell, Modifier.requiredSize(WolfskinTokens.Shell.stageWidth, WolfskinTokens.Shell.stageHeight)) { modifier ->
                 HomeScreen(shell, snapshot, modifier) { model.act(it, shell, server, user) }
@@ -80,14 +80,16 @@ class PlayerHandoffTest {
     @Test fun successfulPlaybackUsesTheRealFullscreenDestinationAndBackKeepsTheResumeCard() {
         val title = HomeFixture(rule.activity).snapshot("mindel").rows.first().cards.first()
         val id = UUID.fromString("00000000-0000-0000-0000-000000000003")
-        coEvery { facade.playableId(user.id, title) } returns id
+        coEvery { facade.preparePlayback(user.id, title) } returns org.jellyfin.sdk.model.api.BaseItemDto(
+            id = id, type = org.jellyfin.sdk.model.api.BaseItemKind.EPISODE,
+            userData = playbackUserData(id, 11_362_740_000L, playCount = 2))
         val view = shell.view
         view.cards["hero"] = 0
-        rule.runOnIdle { model.act(HomeAction.Play(title, resume = true), shell, server, user) }
+        rule.runOnIdle { model.act(HomeAction.Play(title), shell, server, user) }
         awaitModel { navigation.backStack.last() is Destination.Playback }
         val destination = navigation.backStack.last() as Destination.Playback
         assertEquals(id, destination.itemId)
-        assertEquals((title.resumeSeconds * 1000).toLong(), destination.positionMs)
+        assertEquals(1_136_274L, destination.positionMs)
         assertTrue(destination.fullScreen)
         navigation.goBack()
         assertTrue(navigation.backStack.single() is Destination.Home)
@@ -99,11 +101,11 @@ class PlayerHandoffTest {
     @Test fun anotherPersonsSessionCannotResolveOrStartPlayback() {
         val title = HomeFixture(rule.activity).snapshot("mindel").rows.first().cards.first()
         val otherUser = user.copy(name = "Justin")
-        rule.runOnIdle { model.act(HomeAction.Play(title, resume = true), shell, server, otherUser) }
+        rule.runOnIdle { model.act(HomeAction.Play(title), shell, server, otherUser) }
         awaitModel { model.toast != null }
         assertEquals(RecoveryMessage.PlaybackUnavailable, model.toast)
         assertTrue(navigation.backStack.single() is Destination.Home)
-        coVerify(exactly = 0) { facade.playableId(any(), any()) }
+        coVerify(exactly = 0) { facade.preparePlayback(any(), any()) }
     }
     private fun awaitModel(condition: () -> Boolean) {
         rule.waitUntil(5000) {

app/src/test/java/org/justinvisser/wolfskin/tv/TitleKeysTest.kt

@@ -11,6 +11,9 @@ import androidx.compose.ui.test.pressKey
 import androidx.compose.ui.test.onNodeWithTag
 import androidx.compose.ui.test.performMouseInput
 import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.hasClickAction
+import androidx.compose.ui.test.hasText
 import androidx.compose.ui.test.performSemanticsAction
 import androidx.compose.ui.semantics.SemanticsActions
 import androidx.compose.ui.text.TextLayoutResult
@@ -62,6 +65,27 @@ class TitleKeysTest {
         } }
     }
 
+    @Test fun downFocusesThePlayableLaterSeasonAndScrollsItIntoViewWithoutLosingBrowsingMemory() {
+        render("Andor") { page ->
+            page.copy(item = page.item.copy(seasons = 30), seasonNumbers = (1..30).toList(), selectedSeason = 29,
+                playTarget = page.playTarget!!.copy(season = 29))
+        }
+        press(Key.DirectionDown)
+        assertEquals("seasons", state.row)
+        assertEquals(28, state.column)
+        rule.onNode(hasText("Season 29") and hasClickAction()).assertIsDisplayed()
+        press(Key.DirectionLeft)
+        assertEquals(27, state.column)
+        rule.onNode(hasText("Season 28") and hasClickAction()).assertIsDisplayed()
+        press(Key.DirectionUp)
+        press(Key.DirectionDown)
+        assertEquals(27, state.column)
+        press(Key.DirectionCenter)
+        assertEquals(28, state.season)
+        assertEquals(28, state.requestedSeason)
+        assertEquals(TitleAction.Season(28), effects.last())
+    }
+
     private fun press(key: Key) { rule.onRoot().performKeyInput { pressKey(key) } }
     private fun replay(end: String): Int {
         val path = paths.single { it.getString("end") == end }

app/src/test/java/org/justinvisser/wolfskin/tv/TitlePlaybackNavigationTest.kt

@@ -0,0 +1,136 @@
+package org.justinvisser.wolfskin.tv
+
+import android.app.Application
+import androidx.lifecycle.viewModelScope
+import com.github.damontecres.wholphin.data.ServerRepository
+import com.github.damontecres.wholphin.preferences.AppPreferences
+import com.github.damontecres.wholphin.preferences.UserPreferences
+import com.github.damontecres.wholphin.services.NavigationManager
+import com.github.damontecres.wholphin.ui.nav.Destination
+import io.mockk.coEvery
+import io.mockk.coVerify
+import io.mockk.mockk
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.test.StandardTestDispatcher
+import kotlinx.coroutines.test.advanceUntilIdle
+import kotlinx.coroutines.test.resetMain
+import kotlinx.coroutines.test.runTest
+import kotlinx.coroutines.test.setMain
+import org.jellyfin.sdk.model.api.BaseItemDto
+import org.jellyfin.sdk.model.api.BaseItemKind
+import org.junit.Assert.*
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.justinvisser.wolfskin.conductarr.MemoryCacheStore
+import org.justinvisser.wolfskin.design.*
+import org.justinvisser.wolfskin.tv.read.TitleReadFacade
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.RuntimeEnvironment
+import org.robolectric.annotation.Config
+import java.util.UUID
+
+/** Production title actions preserve parents and resolve live playback instead of cached offsets. */
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [34], application = Application::class)
+@OptIn(kotlinx.coroutines.ExperimentalCoroutinesApi::class)
+class TitlePlaybackNavigationTest {
+    private val seriesId = UUID.fromString("00000000-0000-0000-0000-000000000001")
+    private val firstId = UUID.fromString("00000000-0000-0000-0000-000000000002")
+    private val secondId = UUID.fromString("00000000-0000-0000-0000-000000000003")
+    private val person = ShellPerson("justin", "Justin", "J", false)
+    private val preferences = UserPreferences(AppPreferences.getDefaultInstance(), null)
+    private val series = TitleItem(seriesId.toString(), "Series", "tv", seasons = 5, held = true)
+    private val first = TitleItem(firstId.toString(), "First episode", "episode", held = true, season = 3, episode = 1, resumeSeconds = 12)
+    private val second = first.copy(id = secondId.toString(), name = "Second episode", episode = 2)
+
+    @Test fun repeatedEpisodeChoicesReplaceOnlyEpisodesAndBackPreservesTheirSeriesParent() = runTest {
+        Dispatchers.setMain(StandardTestDispatcher(testScheduler))
+        val navigation = NavigationManager()
+        val facade = mockk<TitleReadFacade>()
+        coEvery { facade.readSaved(any(), any()) } returns null
+        coEvery { facade.read(any(), any(), any()) } coAnswers {
+            val id = firstArg<UUID>()
+            TitlePageData(series, playTarget = first, watchTarget = if (id == seriesId) series else first.copy(id = id.toString()),
+                episodes = listOf(first, second), related = listOf(series), cast = listOf(TitlePerson("actor", "Actor")))
+        }
+        val session = ConductarrSession(MemoryCacheStore())
+        val model = WolfskinTitleViewModel(RuntimeEnvironment.getApplication(), facade, mockk(), navigation, session, mockk<ServerRepository>(relaxed = true))
+        fun open(id: UUID) = model.load(titleRoute(id.toString()), person, preferences, fixtures = false, force = true)
+        try {
+            navigation.navigateTo(Destination.Wolfskin(titleRoute(seriesId.toString())))
+            open(seriesId)
+            advanceUntilIdle()
+            model.title!!.click("episodes", 0)
+            assertEquals(3, navigation.backStack.size)
+            assertEquals(firstId, (navigation.backStack.last() as Destination.MediaItem).itemId)
+            open(firstId)
+            advanceUntilIdle()
+            for (id in listOf(secondId, firstId, secondId)) {
+                model.title!!.click("episodes", if (id == firstId) 0 else 1)
+                assertEquals(3, navigation.backStack.size)
+                assertEquals(id, (navigation.backStack.last() as Destination.MediaItem).itemId)
+                open(id)
+                advanceUntilIdle()
+            }
+            model.title!!.click("related", 0)
+            assertEquals(4, navigation.backStack.size)
+            navigation.goBack()
+            model.title!!.click("cast", 0)
+            assertEquals(4, navigation.backStack.size)
+            navigation.goBack()
+            model.title!!.back(ShellState(listOf(person), person.key).apply { pickerVisible = false; pickerLaunch = false })
+            assertEquals(listOf(Destination.Home(), Destination.Wolfskin(titleRoute(seriesId.toString()))), navigation.backStack.toList())
+            navigation.goBack()
+            assertEquals(listOf(Destination.Home()), navigation.backStack.toList())
+            navigation.navigateTo(Destination.Wolfskin(titleRoute(firstId.toString())))
+            open(firstId)
+            advanceUntilIdle()
+            model.title!!.click("episodes", 1)
+            navigation.goBack()
+            assertEquals(listOf(Destination.Home()), navigation.backStack.toList())
+        } finally {
+            model.viewModelScope.cancel()
+            session.close()
+            Dispatchers.resetMain()
+        }
+    }
+
+    @Test fun primarySeriesActionReResolvesNextUpButRestartAndExplicitEpisodesKeepTheirIdentity() = runTest {
+        Dispatchers.setMain(StandardTestDispatcher(testScheduler))
+        val navigation = NavigationManager()
+        val facade = mockk<TitleReadFacade>()
+        coEvery { facade.readSaved(any(), any()) } returns null
+        coEvery { facade.read(any(), any(), any()) } coAnswers {
+            TitlePageData(series, first, watchTarget = if (firstArg<UUID>() == seriesId) series else first)
+        }
+        coEvery { facade.preparePlayback(seriesId) } returns BaseItemDto(id = secondId, type = BaseItemKind.EPISODE,
+            userData = playbackUserData(secondId, 11_362_740_000L, playCount = 2))
+        coEvery { facade.preparePlayback(firstId) } returns BaseItemDto(id = firstId, type = BaseItemKind.EPISODE,
+            userData = playbackUserData(firstId, 960_780_000L, playCount = 1))
+        val session = ConductarrSession(MemoryCacheStore())
+        val model = WolfskinTitleViewModel(RuntimeEnvironment.getApplication(), facade, mockk(), navigation, session, mockk<ServerRepository>(relaxed = true))
+        try {
+            model.load(titleRoute(seriesId.toString()), person, preferences, fixtures = false)
+            advanceUntilIdle()
+            model.title!!.click("header", 0)
+            advanceUntilIdle()
+            assertEquals(Destination.Playback(secondId, 1_136_274L), navigation.backStack.last())
+            navigation.goBack()
+            model.title!!.click("header", model.title!!.options.indexOfFirst { it.id == "restart" })
+            advanceUntilIdle()
+            assertEquals(Destination.Playback(firstId, 0L), navigation.backStack.last())
+            navigation.goBack()
+            model.load(titleRoute(firstId.toString()), person, preferences, fixtures = false)
+            advanceUntilIdle()
+            model.title!!.click("header", 0)
+            advanceUntilIdle()
+            assertEquals(Destination.Playback(firstId, 96_078L), navigation.backStack.last())
+            coVerify(exactly = 1) { facade.preparePlayback(seriesId) }
+        } finally {
+            model.viewModelScope.cancel()
+            session.close()
+            Dispatchers.resetMain()
+        }
+    }
+}

app/src/test/java/org/justinvisser/wolfskin/tv/TitleReadFacadeTest.kt

@@ -128,7 +128,7 @@ class TitleReadFacadeTest {
     }
 
     @Test fun diskCopyPreservesFileAndNonContiguousStreamIndexesWithoutRatingsBeforeSignIn() = runTest {
-        coEvery { library.getItem(firstId) } returns successResponse(file(firstId))
+        coEvery { library.getItem(firstId) } returns successResponse(file(firstId).copy(userData = playbackUserData(firstId, 200_000_000L)))
         facade.read(firstId, null, preferences)
         coEvery { library.getItem(any()) } throws java.io.IOException("offline")
         val saved = facade.readSaved(firstId, preferences)!!
@@ -139,6 +139,7 @@ class TitleReadFacadeTest {
         assertEquals(TitleConnection.SignedOut, saved.connection)
         assertTrue(saved.item.ratings.isEmpty())
         assertEquals(firstId.toString(), saved.watchTarget.id)
+        assertFalse(screen.options.any { it.id == "play" || it.id == "restart" })
     }
 
     @Test fun diskCopiesNeverCrossViewerIdentity() = runTest {

app/src/test/java/org/justinvisser/wolfskin/tv/WatchReadTest.kt

@@ -0,0 +1,135 @@
+package org.justinvisser.wolfskin.tv
+
+import android.app.Application
+import android.content.Context
+import com.github.damontecres.wholphin.WholphinApplication
+import com.github.damontecres.wholphin.data.ServerRepository
+import com.github.damontecres.wholphin.services.ImageUrlService
+import com.github.damontecres.wholphin.ui.successQueryResult
+import com.github.damontecres.wholphin.ui.successResponse
+import io.mockk.*
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.test.*
+import kotlinx.serialization.json.Json
+import org.jellyfin.sdk.api.client.ApiClient
+import org.jellyfin.sdk.api.client.extensions.itemsApi
+import org.jellyfin.sdk.api.client.extensions.tvShowsApi
+import org.jellyfin.sdk.api.client.extensions.userLibraryApi
+import org.jellyfin.sdk.api.operations.ItemsApi
+import org.jellyfin.sdk.api.operations.TvShowsApi
+import org.jellyfin.sdk.api.operations.UserLibraryApi
+import org.jellyfin.sdk.model.api.BaseItemDto
+import org.jellyfin.sdk.model.api.BaseItemDtoQueryResult
+import org.jellyfin.sdk.model.api.BaseItemKind
+import org.junit.After
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.justinvisser.wolfskin.conductarr.MemoryCacheStore
+import org.justinvisser.wolfskin.design.*
+import org.justinvisser.wolfskin.tv.read.*
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.RuntimeEnvironment
+import org.robolectric.annotation.Config
+import androidx.lifecycle.viewModelScope
+import com.github.damontecres.wholphin.data.model.JellyfinServer
+import com.github.damontecres.wholphin.data.model.JellyfinUser
+import com.github.damontecres.wholphin.services.NavigationManager
+import java.util.UUID
+import com.github.damontecres.wholphin.util.WholphinDispatchers
+import com.github.damontecres.wholphin.util.configure
+import com.github.damontecres.wholphin.util.reset
+
+/** Recorded Jellyfin watch shapes exercise newer checkpoints and independent Home publication. */
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [34], application = Application::class)
+@OptIn(kotlinx.coroutines.ExperimentalCoroutinesApi::class)
+class WatchReadTest {
+    private val api = mockk<ApiClient>()
+    private val library = mockk<UserLibraryApi>()
+    private val shows = mockk<TvShowsApi>()
+    private val items = mockk<ItemsApi>()
+    private val images = mockk<ImageUrlService>(relaxed = true)
+    private val userId = UUID.fromString("167649f8-00c9-44b5-a86a-f371eccc2d2e")
+    private val seriesId = UUID.fromString("00000000-0000-0000-0000-000000000003")
+    private val json = Json { ignoreUnknownKeys = true }
+    // Selected fields from the read-only Resume and NextUp replies, without credentials.
+    private val resumeWire = """{"Items":[{"Id":"a8ed46755a50a5dfb443dd5cdd7125a3","Name":"Sex and the Country","Type":"Episode","ParentIndexNumber":4,"IndexNumber":9,"RunTimeTicks":17507200000,"UserData":{"PlaybackPositionTicks":960780000,"Played":false,"PlayCount":1,"IsFavorite":false,"LastPlayedDate":null,"Key":"","ItemId":"a8ed46755a50a5dfb443dd5cdd7125a3"}}],"TotalRecordCount":1,"StartIndex":0}"""
+    private val nextWire = """{"Items":[{"Id":"d6a9588e91a4a22ecb9ae279eb7e09d6","Name":"Me and My Town","Type":"Episode","SeriesName":"Desperate Housewives","ParentIndexNumber":5,"IndexNumber":9,"RunTimeTicks":25368960000,"UserData":{"PlaybackPositionTicks":11362740000,"Played":false,"PlayCount":2,"IsFavorite":false,"LastPlayedDate":"2026-11-06T10:39:27.1772471Z","Key":"","ItemId":"d6a9588e91a4a22ecb9ae279eb7e09d6"}}],"TotalRecordCount":1,"StartIndex":0}"""
+    private fun decode(wire: String) = json.decodeFromString(BaseItemDtoQueryResult.serializer(), wire).items.first()
+
+    @Before fun setup() {
+        every { api.userLibraryApi } returns library
+        every { api.tvShowsApi } returns shows
+        every { api.itemsApi } returns items
+        mockkObject(WholphinApplication.Companion)
+        every { WholphinApplication.instance } returns mockk {
+            every { resources } returns RuntimeEnvironment.getApplication().resources
+        }
+    }
+
+    @After fun teardown() { unmockkObject(WholphinApplication.Companion) }
+
+    @Test fun bothFacadesUseTheLiveCheckpointAndSeriesNextUpWhileExplicitEpisodeKeepsItsIdentity() = runTest {
+        val resume = decode(resumeWire)
+        val next = decode(nextWire)
+        val series = BaseItemDto(id = seriesId, type = BaseItemKind.SERIES)
+        coEvery { library.getItem(itemId = seriesId, userId = userId) } returns successResponse(series)
+        coEvery { library.getItem(itemId = resume.id, userId = userId) } returns successResponse(resume)
+        coEvery { library.getItem(itemId = next.id, userId = userId) } returns successResponse(next)
+        coEvery { shows.getNextUp(userId = userId, seriesId = seriesId, limit = 1, enableResumable = true, enableUserData = true) } returns successQueryResult(listOf(next))
+        val home = HomeReadFacade(api, images, mockk())
+        val repository = mockk<ServerRepository> {
+            every { currentUser } returns mockk { every { id } returns userId }
+        }
+        val title = TitleReadFacade(api, images, mockk(), repository, mockk(), mockk<Context>())
+        val cached = HomeTitle(resume.id.toString(), "Sex and the Country", "episode", resumeSeconds = 10.0)
+        assertEquals(96_078L, home.preparePlayback(userId, cached)!!.playbackPositionMs())
+        assertEquals(96_078L, title.preparePlayback(resume.id)!!.playbackPositionMs())
+        assertEquals(next.id, home.preparePlayback(userId, HomeTitle(seriesId.toString(), "Series", "tv"))!!.id)
+        val selected = title.preparePlayback(seriesId)!!
+        assertEquals(next.id, selected.id)
+        assertEquals(1_136_274L, selected.playbackPositionMs())
+        coVerify(exactly = 2) { shows.getNextUp(userId = userId, seriesId = seriesId, limit = 1, enableResumable = true, enableUserData = true) }
+        val completed = resume.copy(userData = resume.userData!!.copy(playbackPositionTicks = 0, played = true))
+        coEvery { library.getItem(itemId = resume.id, userId = userId) } returns successResponse(completed)
+        assertEquals(0L, home.preparePlayback(userId, cached)!!.playbackPositionMs())
+        assertEquals(true, title.preparePlayback(resume.id)!!.userData?.played)
+    }
+
+    @Test fun freshResumeAndNextUpPaintBeforeSlowLibraryAndSurviveItsFailure() = runTest {
+        WholphinDispatchers.configure(StandardTestDispatcher(testScheduler))
+        val server = JellyfinServer(seriesId, "Fixture", "https://example.invalid", null)
+        val user = JellyfinUser(id = userId, serverId = server.id, name = "Mindel", accessToken = null)
+        val person = ShellPerson("mindel", "Mindel", "M", false, userId.toString())
+        val resume = decode(resumeWire)
+        val next = decode(nextWire)
+        coEvery { items.getResumeItems(userId = userId, fields = any(), mediaTypes = any(), limit = 20) } returns successQueryResult(listOf(resume))
+        coEvery { shows.getNextUp(userId = userId, fields = any(), limit = 20, enableUserData = true) } returns successQueryResult(listOf(next))
+        val facade = spyk(HomeReadFacade(api, images, mockk()))
+        val releaseLibrary = CompletableDeferred<Unit>()
+        coEvery { facade.readLibrary(userId) } coAnswers { releaseLibrary.await(); throw java.io.IOException("Library failed") }
+        val cache = mockk<HomeLibraryCache>(relaxed = true)
+        every { cache.read(any()) } returns (HomeLibrary(resume = listOf(HomeTitle(resume.id.toString(), "Cached episode", "episode", resumeSeconds = 10.0))) to 1L)
+        val session = ConductarrSession(MemoryCacheStore())
+        val model = WolfskinHomeViewModel(RuntimeEnvironment.getApplication(), facade, cache, NavigationManager(), WolfskinSeeAllLists(), session)
+        try {
+            val loading = launch { model.loadLibrary(server, user, person) }
+            runCurrent()
+            assertFalse(loading.isCompleted)
+            assertTrue(model.snapshot.rows.first().watchReady)
+            assertEquals(1136.274, model.snapshot.rows.single { it.id == "nu" }.cards.single().resumeSeconds, .0001)
+            releaseLibrary.complete(Unit)
+            loading.join()
+            assertEquals(96.078, model.snapshot.rows.first().cards.first().resumeSeconds, .0001)
+            assertTrue(model.snapshot.jellyfinAvailable)
+        } finally {
+            model.viewModelScope.cancel()
+            session.close()
+            WholphinDispatchers.reset()
+        }
+    }
+}

app/src/test/java/org/justinvisser/wolfskin/tv/WatchReturnTest.kt

@@ -0,0 +1,77 @@
+package org.justinvisser.wolfskin.tv
+
+import android.app.Application
+import android.os.Looper
+import androidx.activity.ComponentActivity
+import androidx.compose.ui.test.junit4.createAndroidComposeRule
+import androidx.lifecycle.viewModelScope
+import com.github.damontecres.wholphin.data.model.JellyfinServer
+import com.github.damontecres.wholphin.data.model.JellyfinUser
+import com.github.damontecres.wholphin.services.NavigationManager
+import com.github.damontecres.wholphin.util.PlaybackWatchState
+import io.mockk.coEvery
+import io.mockk.every
+import io.mockk.mockk
+import kotlinx.coroutines.cancel
+import org.junit.Assert.*
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.justinvisser.wolfskin.conductarr.MemoryCacheStore
+import org.justinvisser.wolfskin.design.*
+import org.justinvisser.wolfskin.tv.read.HomeLibraryCache
+import org.justinvisser.wolfskin.tv.read.HomeReadFacade
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.Shadows.shadowOf
+import org.robolectric.annotation.Config
+import java.util.UUID
+import java.util.concurrent.atomic.AtomicReference
+
+/** A still-composed Home must paint the checkpoint acknowledged after its first return read. */
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [34], application = Application::class, qualifiers = "w960dp-h540dp-xhdpi")
+class WatchReturnTest {
+    @get:Rule val rule = createAndroidComposeRule<ComponentActivity>()
+
+    @Test fun acknowledgedStopRefreshesVisibleHeroWithoutRecreatingHomeOrLosingFocus() {
+        val server = JellyfinServer(UUID.randomUUID(), "Fixture", "https://example.invalid", null)
+        val user = JellyfinUser(id = UUID.randomUUID(), serverId = server.id, name = "Mindel", accessToken = null)
+        val person = ShellPerson("mindel", "Mindel", "M", false, user.id.toString())
+        val shell = ShellState(listOf(person), person.key).apply { pickerVisible = false; pickerLaunch = false }
+        val episode = HomeTitle("episode", "Me and My Town", "episode", runtimeSeconds = 2536, resumeSeconds = 10.0, held = true, seriesTitle = "Desperate Housewives", season = 5, episode = 9)
+        val current = AtomicReference(episode)
+        val facade = mockk<HomeReadFacade>()
+        every { facade.audiences } returns null
+        coEvery { facade.readWatch(user.id) } coAnswers { HomeLibrary(resume = listOf(current.get())) }
+        coEvery { facade.readLibrary(user.id) } returns HomeLibrary()
+        val cache = mockk<HomeLibraryCache>(relaxed = true)
+        every { cache.read(any()) } returns null
+        val session = ConductarrSession(MemoryCacheStore())
+        val model = WolfskinHomeViewModel(rule.activity, facade, cache, NavigationManager(), WolfskinSeeAllLists(), session)
+        val oldFixtures = ConductarrPreference.fixtures
+        ConductarrPreference.updateFixtures(false)
+        try {
+            rule.setContent { WolfskinTheme {
+                ShellSurface(shell) { HomeDestination(shell, server, user, it, model) }
+            } }
+            rule.waitUntil(5000) {
+                shadowOf(Looper.getMainLooper()).idle()
+                model.snapshot.rows.firstOrNull()?.cards?.firstOrNull()?.resumeSeconds == 10.0
+            }
+            val view = shell.rememberedView("home")
+            rule.runOnIdle { shell.navFocused = false; view.cards["hero"] = 0; current.set(episode.copy(resumeSeconds = 1136.274)) }
+            PlaybackWatchState.stopped(rule.activity, "${server.id}:${user.id}")
+            rule.waitUntil(5000) {
+                shadowOf(Looper.getMainLooper()).idle()
+                model.snapshot.rows.firstOrNull()?.cards?.firstOrNull()?.resumeSeconds == 1136.274
+            }
+            assertSame(view, shell.rememberedView("home"))
+            assertEquals(0, view.cards["hero"])
+            assertTrue(model.snapshot.rows.first().watchReady)
+        } finally {
+            model.viewModelScope.cancel()
+            session.close()
+            ConductarrPreference.updateFixtures(oldFixtures)
+        }
+    }
+}

app/src/wolfskin/java/org/justinvisser/wolfskin/tv/HomeDestination.kt

@@ -18,10 +18,12 @@ import java.util.Date
 import java.util.Locale
 import javax.inject.Inject
 import kotlinx.coroutines.CancellationException
-import kotlinx.coroutines.Dispatchers
+import com.github.damontecres.wholphin.util.WholphinDispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import kotlinx.coroutines.coroutineScope
+import org.justinvisser.wolfskin.tv.read.playbackPositionMs
 import org.justinvisser.wolfskin.design.*
 import org.justinvisser.wolfskin.tv.read.HomeLibraryCache
 import org.justinvisser.wolfskin.tv.read.HomeReadFacade
@@ -50,9 +52,9 @@ class WolfskinHomeViewModel @Inject constructor(
 
     suspend fun load(server: JellyfinServer, user: JellyfinUser, person: ShellPerson, retry: Boolean = false) {
         catalogueJob?.cancel()
-        withContext(Dispatchers.IO) { debugHomeSnapshot(context, person.key) }?.let { snapshot = it; return }
+        withContext(WholphinDispatchers.IO) { debugHomeSnapshot(context, person.key) }?.let { snapshot = it; return }
         if (retry && conductarr.identity.value?.signedIn != true) {
-            withContext(Dispatchers.IO) {
+            withContext(WholphinDispatchers.IO) {
                 conductarr.select("${server.id}:${user.id}", user.accessToken, ConductarrPreference.baseUrl, retry = true)
             }
         }
@@ -74,11 +76,12 @@ class WolfskinHomeViewModel @Inject constructor(
             toast = null
             snapshot = HomeSnapshot(buildHomeRows(HomeLibrary(), emptyList(), loading = true), HomeAvailability.Loading)
         }
-        val saved = withContext(Dispatchers.IO) { try { cache.read(scope) } catch (_: java.io.IOException) { null } }
+        val saved = withContext(WholphinDispatchers.IO) { try { cache.read(scope) } catch (_: java.io.IOException) { null } }
         if (revision != loadRevision) return
         var libraryCopy = saved?.first ?: HomeLibrary()
         var libraryAvailable = true
         var librarySavedAt: String? = null
+        var watchReady = false
         val identity = conductarr.identity.value
         var catalogueCopy = DiscoverSnapshot(status = if (identity?.signedIn == true || (retry && identity != null)) DiscoverStatus.Loading else DiscoverStatus.NeedsSignIn)
         fun publish() {
@@ -89,8 +92,9 @@ class WolfskinHomeViewModel @Inject constructor(
                 DiscoverStatus.Unavailable -> HomeAvailability.Unavailable
                 else -> if (catalogueCopy.savedAt != null) HomeAvailability.Saved else HomeAvailability.Ready
             }
-            snapshot = HomeSnapshot(buildHomeRows(libraryCopy, catalogueCopy.homeRows(), libraryAvailable = libraryAvailable),
+            snapshot = HomeSnapshot(buildHomeRows(libraryCopy, catalogueCopy.homeRows(), libraryAvailable = libraryAvailable).map {
-                status, libraryAvailable, catalogueCopy.savedAt ?: librarySavedAt)
+                if (it.kind == HomeRowKind.Hero) it.copy(watchReady = watchReady) else it
+            }, status, libraryAvailable, catalogueCopy.savedAt ?: librarySavedAt)
         }
         catalogueSnapshot = catalogueCopy
         publishCatalogue = { value -> if (revision == loadRevision && sourceScope == scope) { catalogueCopy = value; catalogueSnapshot = value; publish() } }
@@ -107,20 +111,43 @@ class WolfskinHomeViewModel @Inject constructor(
                 if (revision == loadRevision && conductarr.identity.value?.client === identity.client) publishCatalogue?.invoke(catalogue)
             }
         }
-        try {
+        suspend fun save() {
-            val library = withContext(Dispatchers.IO) { home.read(user.id) }
+            val library = libraryCopy
-            val savedAt = System.currentTimeMillis()
+            withContext(WholphinDispatchers.IO) {
-            libraryCopy = library
+                try { cache.write(scope, library, System.currentTimeMillis()) } catch (_: java.io.IOException) { /* Disk failure cannot revoke fresh watch data. */ }
-            publish()
+            }
-            withContext(Dispatchers.IO) { try { cache.write(scope, library, savedAt) } catch (_: java.io.IOException) { /* Saving cannot delay first paint or turn a reachable source into an outage. */ } }
-        } catch (exception: Exception) {
-            if (exception is CancellationException) throw exception
-            if (revision != loadRevision) return
-            libraryAvailable = false
-            librarySavedAt = saved?.second?.let { SimpleDateFormat("HH:mm", Locale.getDefault()).format(Date(it)) }
-            publish()
-            if (retry) showToast(RecoveryMessage.StillUnreachable)
         }
+        coroutineScope {
+            launch {
+                try {
+                    val watch = withContext(WholphinDispatchers.IO) { home.readWatch(user.id) }
+                    if (revision != loadRevision) return@launch
+                    libraryCopy = libraryCopy.copy(resume = watch.resume, nextUp = watch.nextUp)
+                    watchReady = true
+                    libraryAvailable = true
+                    publish()
+                } catch (exception: Exception) {
+                    if (exception is CancellationException) throw exception
+                    if (revision != loadRevision) return@launch
+                    libraryAvailable = false
+                    librarySavedAt = saved?.second?.let { SimpleDateFormat("HH:mm", Locale.getDefault()).format(Date(it)) }
+                    publish()
+                    if (retry) showToast(RecoveryMessage.StillUnreachable)
+                }
+            }
+            launch {
+                try {
+                    val shelves = withContext(WholphinDispatchers.IO) { home.readLibrary(user.id) }
+                    if (revision != loadRevision) return@launch
+                    libraryCopy = libraryCopy.copy(newest = shelves.newest, destinations = shelves.destinations, destinationTotals = shelves.destinationTotals)
+                    publish()
+                } catch (exception: Exception) {
+                    if (exception is CancellationException) throw exception
+                    if (revision == loadRevision && retry) showToast(RecoveryMessage.StillUnreachable)
+                }
+            }
+        }
+        if (revision == loadRevision) save()
     }
 
     suspend fun readAhead(lane: String?) {
@@ -138,6 +165,7 @@ class WolfskinHomeViewModel @Inject constructor(
             is HomeAction.SeeAll -> if (action.row.target in shell.tabs) openRoot(shell, action.row.target!!) else openCatalogueGrid(action.row, shell)
             is HomeAction.Details -> navigation.navigateTo(Destination.Wolfskin(titleRoute(action.title.id)))
             is HomeAction.Play -> viewModelScope.launch {
+                val personKey = shell.person.key
                 val selectedId = shell.person.jellyfinUserId
                 val matchesUser = if (selectedId != null) selectedId == user.id.toString() else
                     shell.person.key == user.name.orEmpty().lowercase() || (conductarr.identity.value?.person == "${server.id}:${user.id}" && shell.person.key == conductarr.identity.value?.operator?.requester)
@@ -146,9 +174,9 @@ class WolfskinHomeViewModel @Inject constructor(
                     return@launch
                 }
                 try {
-                    val id = withContext(Dispatchers.IO) { home.playableId(user.id, action.title) }
+                    val item = withContext(WholphinDispatchers.IO) { home.preparePlayback(user.id, action.title) }
-                    if (id == null) showToast(RecoveryMessage.PlaybackUnavailable)
+                    if (item == null) showToast(RecoveryMessage.PlaybackUnavailable)
-                    else navigation.navigateTo(Destination.Playback(id, if (action.resume) (action.title.resumeSeconds * 1000).toLong() else 0L))
+                    else if (shell.person.key == personKey && (sourceScope == null || sourceScope == "${server.id}:${user.id}")) navigation.navigateTo(Destination.Playback(item.id, item.playbackPositionMs()))
                 } catch (exception: Exception) {
                     if (exception is CancellationException) throw exception
                     showToast(RecoveryMessage.PlaybackUnavailable)
@@ -204,7 +232,8 @@ internal fun HomeTitle.libraryTitle(): LibraryTitle = LibraryTitle(
 @Composable
 fun HomeDestination(shell: ShellState, server: JellyfinServer, user: JellyfinUser, modifier: Modifier = Modifier, model: WolfskinHomeViewModel = hiltViewModel()) {
     val identity by model.conductarrState.collectAsState()
-    LaunchedEffect(shell.person, server.id, user.id, identity?.client, identity?.signedIn, model.audiences) { model.load(server, user, shell.person) }
+    val watchRefresh = rememberWatchRefresh("${server.id}:${user.id}")
+    LaunchedEffect(shell.person, server.id, user.id, identity?.client, identity?.signedIn, model.audiences, watchRefresh) { model.load(server, user, shell.person) }
     val view = shell.rememberedView("home")
     LaunchedEffect(view.row, model.snapshot.rows) {
         val lane = model.snapshot.rows.drop(view.row).take(3).lastOrNull { it.catalogue }?.id

app/src/wolfskin/java/org/justinvisser/wolfskin/tv/TitleDestination.kt

@@ -48,6 +48,7 @@ import org.justinvisser.wolfskin.design.TitleReadStatus
 import org.justinvisser.wolfskin.design.TitleState
 import org.justinvisser.wolfskin.design.TitleSurface
 import org.justinvisser.wolfskin.tv.read.TitleReadFacade
+import org.justinvisser.wolfskin.tv.read.playbackPositionMs
 import java.util.UUID
 import javax.inject.Inject
 
@@ -79,6 +80,7 @@ class WolfskinTitleViewModel @Inject constructor(
     private val saveMutex = Mutex()
     private var performerPage = 1
     var conductarrAction: ((TitleAction) -> Unit)? = null
+    val watchScope: String get() = "${repository.currentServer?.id}:${repository.currentUser?.id}"
 
     fun openRoute(route: String) = navigation.navigateTo(Destination.Wolfskin(route))
     fun popRoute() = navigation.goBack()
@@ -87,6 +89,14 @@ class WolfskinTitleViewModel @Inject constructor(
     /** Only an explicit preview/test choice admits assets; real catalogue ids use Conductarr. */
     fun load(destination: String, selected: ShellPerson, userPreferences: UserPreferences, fixtures: Boolean = BuildConfig.DEBUG, force: Boolean = false) {
         if (!force && route == destination && ::viewer.isInitialized && viewer.key == selected.key) return
+        if (force && route == destination && ::viewer.isInitialized && viewer.key == selected.key &&
+            title?.data?.status == TitleReadStatus.Ready && !destination.startsWith("person/") && fixture == null) {
+            loadJob?.cancel()
+            preferences = userPreferences
+            title?.let { it.update(it.data.copy(watchReady = false)) }
+            loadJob = viewModelScope.launch { readTitle(Uri.decode(destination.substringAfter('/'))) }
+            return
+        }
         route = destination
         loadJob?.cancel()
         person = null
@@ -132,7 +142,7 @@ class WolfskinTitleViewModel @Inject constructor(
             if (title !== current) return
             if (heldId != null) {
                 if (current.data.status != TitleReadStatus.Ready) facade.readSaved(heldId, preferences)?.let { current.update(it) }
-                held = facade.read(heldId, current.takeIf { it.data.status == TitleReadStatus.Ready }?.season, preferences)
+                held = facade.read(heldId, current.requestedSeason, preferences)
                 current.update(held)
             }
         } catch (exception: Exception) {
@@ -223,13 +233,21 @@ class WolfskinTitleViewModel @Inject constructor(
         when (action) {
             TitleAction.Pop -> navigation.goBack()
             is TitleAction.Person -> navigation.navigateTo(action.person.id.toUuidOrNull()?.let { Destination.MediaItem(it, org.jellyfin.sdk.model.api.BaseItemKind.PERSON) } ?: Destination.Wolfskin(personRoute(action.person.id)))
-            is TitleAction.OpenTitle -> navigation.navigateTo(action.item.id.toUuidOrNull()?.let { Destination.MediaItem(it, when (action.item.kind) {
+            is TitleAction.OpenTitle -> {
-                "movie" -> org.jellyfin.sdk.model.api.BaseItemKind.MOVIE
+                val destination = action.item.id.toUuidOrNull()?.let { Destination.MediaItem(it, when (action.item.kind) {
-                "episode" -> org.jellyfin.sdk.model.api.BaseItemKind.EPISODE
+                    "movie" -> org.jellyfin.sdk.model.api.BaseItemKind.MOVIE
-                else -> org.jellyfin.sdk.model.api.BaseItemKind.SERIES
+                    "episode" -> org.jellyfin.sdk.model.api.BaseItemKind.EPISODE
-            }) } ?: Destination.Wolfskin(titleRoute(action.item.id)))
+                    else -> org.jellyfin.sdk.model.api.BaseItemKind.SERIES
-            is TitleAction.Play -> play(action.item.id.toUuidOrNull(), if (action.restart) 0 else action.item.resumeSeconds * 1000)
+                }) } ?: Destination.Wolfskin(titleRoute(action.item.id))
-            is TitleAction.Trailer -> if (action.url.startsWith("jellyfin:")) play(action.url.removePrefix("jellyfin:").toUuidOrNull(), 0)
+                if (action.episodeSelection && title?.data?.watchTarget?.kind == "episode") navigation.replaceTop(destination)
+                else navigation.navigateTo(destination)
+            }
+            is TitleAction.Play -> {
+                val opened = title?.data?.watchTarget
+                play((if (action.restart || opened?.kind != "tv") action.item.id else opened.id).toUuidOrNull(),
+                    restart = action.restart)
+            }
+            is TitleAction.Trailer -> if (action.url.startsWith("jellyfin:")) play(action.url.removePrefix("jellyfin:").toUuidOrNull(), restart = true)
                 else if (!TitleTrailer(context).open(action.url)) title?.toast = "No YouTube app is available to play this trailer."
             is TitleAction.Version, is TitleAction.Track, is TitleAction.Watched -> savePlayback(action)
             is TitleAction.Season -> {
@@ -261,12 +279,15 @@ class WolfskinTitleViewModel @Inject constructor(
         }
     }
 
-    private fun play(id: UUID?, position: Long) {
+    private fun play(id: UUID?, restart: Boolean) {
+        val current = title
+        val playbackScope = watchScope
         viewModelScope.launch {
             try {
                 if (id == null) throw IllegalArgumentException("No Jellyfin playback identity")
-                facade.preparePlayback(id)
+                val item = facade.preparePlayback(id) ?: throw IllegalArgumentException("No playable item")
-                navigation.navigateTo(Destination.Playback(id, position))
+                if (title !== current || watchScope != playbackScope) return@launch
+                navigation.navigateTo(Destination.Playback(item.id, if (restart) 0L else item.playbackPositionMs()))
             } catch (exception: Exception) {
                 if (exception is CancellationException) throw exception
                 title?.toast = RecoveryMessage.PlaybackUnavailable
@@ -308,7 +329,8 @@ class WolfskinTitleViewModel @Inject constructor(
 @Composable
 fun TitleDestination(route: String, shell: ShellState, preferences: UserPreferences, modifier: Modifier = Modifier, viewModel: WolfskinTitleViewModel = hiltViewModel(), fixtures: Boolean = ConductarrPreference.fixtures) {
     val identity by viewModel.conductarr.identity.collectAsStateWithLifecycle()
-    LaunchedEffect(route, shell.person.key, identity?.client, identity?.signedIn, fixtures) { viewModel.load(route, shell.person, preferences, fixtures, force = true) }
+    val watchRefresh = rememberWatchRefresh(viewModel.watchScope)
+    LaunchedEffect(route, shell.person.key, identity?.client, identity?.signedIn, fixtures, watchRefresh) { viewModel.load(route, shell.person, preferences, fixtures, force = true) }
     val title = viewModel.title?.takeIf { it.person.key == shell.person.key }
     val requests = if (route.startsWith("title/")) rememberTitleRequests(viewModel, shell, route, identity, fixtures, title) else null
     LaunchedEffect(title?.data?.status) {

app/src/wolfskin/java/org/justinvisser/wolfskin/tv/WatchRefresh.kt

@@ -0,0 +1,32 @@
+package org.justinvisser.wolfskin.tv
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.compose.LocalLifecycleOwner
+import com.github.damontecres.wholphin.util.PlaybackWatchState
+
+/** Re-read on entry, foreground and successful stop, even when a screen remains composed. */
+@Composable
+internal fun rememberWatchRefresh(scope: String?): Pair<Long, Int> {
+    val revisions by PlaybackWatchState.revisions.collectAsState()
+    var foreground by remember(scope) { mutableIntStateOf(0) }
+    val owner = LocalLifecycleOwner.current
+    DisposableEffect(owner, scope) {
+        var initialResume = owner.lifecycle.currentState.isAtLeast(Lifecycle.State.RESUMED)
+        val observer = LifecycleEventObserver { _, event ->
+            if (event == Lifecycle.Event.ON_RESUME) {
+                if (initialResume) initialResume = false else foreground++
+            }
+        }
+        owner.lifecycle.addObserver(observer)
+        onDispose { owner.lifecycle.removeObserver(observer) }
+    }
+    return (revisions[scope] ?: 0L) to foreground
+}

app/src/wolfskin/java/org/justinvisser/wolfskin/tv/WolfskinLibrary.kt

@@ -72,7 +72,8 @@ fun WolfskinLibraryContent(
         ShellPlaceholder("See all list unavailable", modifier)
         return
     }
-    LaunchedEffect(grid, grid.refreshRevision, fixture, if (route in LIBRARY_DESTINATIONS) facade.audiences else null) {
+    val watchRefresh = rememberWatchRefresh(cacheScope)
+    LaunchedEffect(grid, grid.refreshRevision, fixture, if (route in LIBRARY_DESTINATIONS) facade.audiences else null, watchRefresh) {
         if (route in LIBRARY_DESTINATIONS && (!ConductarrPreference.fixtures || fixture != null)) {
             val wasLoading = grid.status == LibraryStatus.Loading
             if (wasLoading && !shell.navFocused) shell.focusNav(shell.currentTab)
@@ -82,7 +83,7 @@ fun WolfskinLibraryContent(
                 grid.status = LibraryStatus.Ready
             } else {
                 val store = withContext(Dispatchers.IO) { snapshots.value }
-                store.read(cacheScope, route, force = grid.refreshRevision > 0) { facade.readLibrary(user.id, route) }.collect { snapshot ->
+                store.read(cacheScope, route, force = grid.refreshRevision > 0, invalidatedAtMillis = watchRefresh.first) { facade.readLibrary(user.id, route) }.collect { snapshot ->
                     val focusedId = grid.focusedTitle?.id
                     grid.source = snapshot.items
                     focusedId?.let { id -> grid.items.indexOfFirst { it.id == id }.takeIf { it >= 0 }?.let { grid.index = it } }

app/src/wolfskin/java/org/justinvisser/wolfskin/tv/read/HomeReadFacade.kt

@@ -23,7 +23,8 @@ import org.justinvisser.wolfskin.design.HomeTitle
 /** All Home SDK calls and image URLs stay behind this facade, with their own required field list. */
 class HomeReadFacade @Inject constructor(private val api: ApiClient, private val images: ImageUrlService, private val libraries: LibraryReadFacade) {
     val audiences get() = libraries.audiences
-    suspend fun read(userId: UUID): HomeLibrary {
+    /** Watch rows are publishable without waiting for any library shelf. */
+    suspend fun readWatch(userId: UUID): HomeLibrary {
         val resumeItems = api.itemsApi.getResumeItems(userId = userId, fields = FIELDS, mediaTypes = listOf(MediaType.VIDEO), limit = 20).content.items
         val nextItems = api.tvShowsApi.getNextUp(userId = userId, fields = FIELDS, limit = 20, enableUserData = true).content.items
         val series = (resumeItems + nextItems).mapNotNull { it.seriesId }.distinct().associateWith { id ->
@@ -35,6 +36,11 @@ class HomeReadFacade @Inject constructor(private val api: ApiClient, private val
         }
         val resume = resumeItems.map { title(it, series) }
         val next = nextItems.map { title(it, series) }
+        return HomeLibrary(resume = resume, nextUp = next)
+    }
+
+    /** Library failures do not discard an already successful watch read. */
+    suspend fun readLibrary(userId: UUID): HomeLibrary {
         val libraries = api.userViewsApi.getUserViews(userId = userId).content.items
         val destinations = linkedMapOf<String, MutableList<HomeTitle>>()
         val newest = mutableListOf<HomeTitle>()
@@ -46,23 +52,18 @@ class HomeReadFacade @Inject constructor(private val api: ApiClient, private val
             totals[key] = (totals[key] ?: 0) + response.totalRecordCount
             newest.addAll(api.itemsApi.getItems(userId = userId, parentId = library.id, recursive = true, includeItemTypes = listOf(BaseItemKind.MOVIE, BaseItemKind.SERIES), fields = FIELDS, sortBy = listOf(ItemSortBy.DATE_CREATED), sortOrder = listOf(SortOrder.DESCENDING), limit = 12).content.items.map { title(it) })
         }
-        return HomeLibrary(resume, next, newest.sortedByDescending { it.addedAt }.take(12), destinations, totals)
+        return HomeLibrary(newest = newest.sortedByDescending { it.addedAt }.take(12), destinations = destinations, destinationTotals = totals)
     }
 
-    suspend fun playableId(userId: UUID, title: HomeTitle): UUID? {
+    /** Resolve the current checkpoint even when the hero was painted from disk. */
-        title.id.let { runCatching { UUID.fromString(it) }.getOrNull() }?.let { id ->
+    suspend fun preparePlayback(userId: UUID, title: HomeTitle): BaseItemDto? {
-            val item = api.userLibraryApi.getItem(userId = userId, itemId = id).content
+        val id = runCatching { UUID.fromString(title.id) }.getOrNull() ?: run {
-            if (item.type == BaseItemKind.SERIES) {
+            val kinds = if (title.isEpisode) listOf(BaseItemKind.EPISODE) else listOf(BaseItemKind.MOVIE)
-                return (api.tvShowsApi.getNextUp(userId = userId, seriesId = id, limit = 1).content.items.firstOrNull()
+            api.itemsApi.getItems(userId = userId, recursive = true, searchTerm = title.title, includeItemTypes = kinds, fields = FIELDS, limit = 20).content.items.firstOrNull {
-                    ?: api.tvShowsApi.getEpisodes(seriesId = id, userId = userId, limit = 1).content.items.firstOrNull())
+                it.name == title.title && (!title.isEpisode || (it.seriesName == title.seriesTitle && it.parentIndexNumber == title.season && it.indexNumber == title.episode))
-                    ?.takeIf { it.type == BaseItemKind.EPISODE }?.id
+            }?.id
-            }
+        } ?: return null
-            return item.id.takeIf { item.type == BaseItemKind.MOVIE || item.type == BaseItemKind.EPISODE }
+        return readPlayback(api, userId, id)
-        }
-        val kinds = if (title.isEpisode) listOf(BaseItemKind.EPISODE) else listOf(BaseItemKind.MOVIE)
-        return api.itemsApi.getItems(userId = userId, recursive = true, searchTerm = title.title, includeItemTypes = kinds, fields = FIELDS, limit = 20).content.items.firstOrNull {
-            it.name == title.title && (!title.isEpisode || (it.seriesName == title.seriesTitle && it.parentIndexNumber == title.season && it.indexNumber == title.episode))
-        }?.id
     }
 
     private fun title(item: BaseItemDto, series: Map<UUID, Int?> = emptyMap()): HomeTitle {

app/src/wolfskin/java/org/justinvisser/wolfskin/tv/read/LibrarySnapshotStore.kt

@@ -19,13 +19,13 @@ data class LibrarySnapshot(val items: List<LibraryTitle>, val savedAtMillis: Lon
 
 /** Library snapshots share the existing atomic disk store, partitioned by server and person. */
 class LibrarySnapshotStore(private val cache: CacheStore, private val now: () -> Long = System::currentTimeMillis) {
-    fun read(scope: String, destination: String, force: Boolean = false, load: () -> Flow<List<LibraryTitle>>): Flow<LibrarySnapshot> = flow {
+    fun read(scope: String, destination: String, force: Boolean = false, invalidatedAtMillis: Long = 0L, load: () -> Flow<List<LibraryTitle>>): Flow<LibrarySnapshot> = flow {
         val key = "library:$destination"
         val saved = try { cache.read(scope, key) } catch (_: IOException) { null }
         val titles = saved?.let { try { decode(it.body) } catch (_: JSONException) { null } }
         if (saved != null && titles != null) emit(LibrarySnapshot(titles, saved.savedAtMillis, false))
         val lifetime = (WolfskinTokens.Behaviour.libraryRefreshMinutes * 60_000).toLong()
-        if (!force && saved != null && titles != null && now() - saved.validatedAtMillis < lifetime) return@flow
+        if (!force && saved != null && titles != null && saved.validatedAtMillis > invalidatedAtMillis && now() - saved.validatedAtMillis < lifetime) return@flow
         var current: List<LibraryTitle> = emptyList()
         try {
             load().collect { chunk ->

app/src/wolfskin/java/org/justinvisser/wolfskin/tv/read/PlaybackRead.kt

@@ -0,0 +1,23 @@
+package org.justinvisser.wolfskin.tv.read
+
+import org.jellyfin.sdk.api.client.ApiClient
+import org.jellyfin.sdk.api.client.extensions.tvShowsApi
+import org.jellyfin.sdk.api.client.extensions.userLibraryApi
+import org.jellyfin.sdk.model.api.BaseItemDto
+import org.jellyfin.sdk.model.api.BaseItemKind
+import java.util.UUID
+
+/** A click resolves its target and checkpoint from Jellyfin, never from a painted projection. */
+internal suspend fun readPlayback(api: ApiClient, userId: UUID?, id: UUID): BaseItemDto? {
+    val opened = api.userLibraryApi.getItem(itemId = id, userId = userId).content
+    val target = if (opened.type == BaseItemKind.SERIES) {
+        api.tvShowsApi.getNextUp(userId = userId, seriesId = id, limit = 1, enableResumable = true, enableUserData = true)
+            .content.items.firstOrNull()?.id
+            ?: api.tvShowsApi.getEpisodes(seriesId = id, userId = userId, limit = 1, enableUserData = true).content.items.firstOrNull()?.id
+    } else opened.id
+    val item = if (target == opened.id) opened else target?.let { api.userLibraryApi.getItem(itemId = it, userId = userId).content }
+    return item?.takeIf { it.type == BaseItemKind.EPISODE || it.type == BaseItemKind.MOVIE }
+}
+
+/** Preserve subsecond server checkpoints, including resumable rewatches marked Played. */
+internal fun BaseItemDto.playbackPositionMs(): Long = (userData?.playbackPositionTicks ?: 0L) / 10_000L

app/src/wolfskin/java/org/justinvisser/wolfskin/tv/read/TitleReadFacade.kt

@@ -77,7 +77,7 @@ class TitleReadFacade @Inject constructor(
             val rows = json.decodeFromString(ListSerializer(BaseItemDto.serializer()), saved.getString("items"))
             val numbers = saved.getJSONArray("seasonNumbers").let { array -> List(array.length()) { array.getInt(it) } }
             build(rows, numbers, saved.optInt("selectedSeason"), saved.getString("watch"), saved.optString("target").takeIf { it.isNotEmpty() }, preferences)
-                .copy(savedAt = savedTime(file), trailerUrl = saved.optString("trailer").takeIf { it.isNotEmpty() })
+                .copy(savedAt = savedTime(file), trailerUrl = saved.optString("trailer").takeIf { it.isNotEmpty() }, watchReady = false)
         } catch (_: java.io.IOException) { null } catch (_: IllegalArgumentException) { null } catch (_: org.json.JSONException) { null }
     }
 
@@ -122,8 +122,9 @@ class TitleReadFacade @Inject constructor(
         return item.copy(providerIds = metadata.providerIds ?: item.providerIds, people = item.people ?: metadata.people)
     }
 
-    /** A failed reachability read leaves navigation on the title instead of opening a dead player. */
+    /** Series actions re-resolve NextUp; explicit episodes and Restart retain their exact identity. */
-    suspend fun preparePlayback(id: UUID) { api.userLibraryApi.getItem(id) }
+    suspend fun preparePlayback(id: UUID): BaseItemDto? =
+        readPlayback(api, repository.currentUser?.id, id)
 
     /** Track selection uses the same repository consumed by the upstream player. */
     suspend fun apply(action: TitleAction) = withContext(Dispatchers.IO) {

docker/README.md

@@ -315,16 +315,29 @@ an untouched fresh entry focuses hero button zero; intervening nav input prevent
 that automatic transfer. Home, Libraries and Discover use the same `ShellContentFocus`
 release/repeat guard and Back ladder.
 
-`HomeReadFacade` is the only Home code importing Jellyfin API clients. Release
+`HomeReadFacade` confines Home SDK reads to the selected user. Resume and Next up
-variants read the selected user's Resume, Next up, newest titles and destination
+publish independently of slow or failed library shelves; saved metadata still
-shelves, with app-private last-known-good projections through the shared atomic
+paints immediately, but a saved hero offers Details until watch data revalidates.
-disk cache. A missing saved library becomes a recovery panel; a saved library
+Home and title Play actions resolve the current Jellyfin item and its current
-stays visible when Jellyfin is unreachable. Playback resolves an actual film or
+checkpoint at the click, preserving millisecond positions. Series actions use
-episode and checks Jellyfin before opening upstream's player. No season,
+live NextUp with resumable episodes enabled; an explicitly opened episode stays
-recommendation stub or different person's session is promoted to playback.
+that episode, and Restart deliberately starts that displayed episode at zero.
+Played flags do not discard a positive checkpoint for an intentional rewatch.
+No season, recommendation stub or different person's session becomes playable.
 An unresolved person switch guards Home and both owned/upstream library content
 before mounting any source read with the prior person's Jellyfin session.
 
+Home and title watch reads refresh on entry and foreground. A successful
+PlaybackStopped acknowledgement publishes a revision for the captured server/user,
+so a return read that beat the stop write is refreshed again after that write.
+The acknowledgement also removes that user's persisted library grid snapshots
+instead of waiting for their ten-minute TTL; an in-memory revision bypasses any
+older snapshot that raced invalidation. Stop-report failures remain logged and
+do not publish a successful acknowledgement. External players refresh after a
+supported stop result; an external app that returns no position cannot supply a
+missing checkpoint. Another client's changes after the final read are outside
+that click's snapshot.
+
 Debug variants additionally package the locked fixture and local artwork under
 `wolfskin-design/src/debug/assets/wolfskin-home/`; release variants exclude them.
 The explicit fixture provider supplies approved household data and Home states
@@ -586,6 +599,13 @@ Selections persist through the same playback repository as the upstream player.
 Marking a whole series asks first; an explicit episode remains the exact play and
 watched target even while another season is selected. Nested person/title visits
 retain their entry's focus and selection state.
+Choosing another episode from an episode page replaces only the top navigation
+entry, preserving its series/Home parent. Choosing the first episode from a
+series, related titles, cast and performer credits still push normal drill-ins.
+Down into season chips initially focuses the selected playable season, including
+offscreen later seasons; the row scrolls that chip into view and remembers
+subsequent deliberate browsing. Saved title watch data cannot enable Play/Resume
+or Restart before source revalidation.
 Hardware and remote Back share the sheet/picker/request-overlay precedence, then
 pop a pushed title/person from content **or** nav. Initial loading has no content
 target: Down stays in nav, while Back can still leave the title. A missing rating

wolfskin-design/src/main/java/org/justinvisser/wolfskin/design/HomeFocus.kt

@@ -69,7 +69,7 @@ class HomeFocus(
     private fun activate(row: HomeRow) {
         when (row.kind) {
             HomeRowKind.Hero -> row.cards.firstOrNull()?.let { title ->
-                onAction(if (column == 0 && row.heroKind != "pick") HomeAction.Play(title, row.heroKind == "resume") else HomeAction.Details(title))
+                onAction(if (column == 0 && row.heroKind != "pick" && row.watchReady) HomeAction.Play(title) else HomeAction.Details(title))
             }
             HomeRowKind.Shelf -> if (column < row.cards.size) onAction(HomeAction.Details(row.cards[column])) else onAction(HomeAction.SeeAll(row))
             HomeRowKind.State -> onAction(HomeAction.Retry)

wolfskin-design/src/main/java/org/justinvisser/wolfskin/design/HomeHeader.kt

@@ -43,9 +43,10 @@ fun HomeHero(row: HomeRow, focused: Boolean, column: Int, ratings: List<HomeRati
                 Text(title.overview, color = C.muted, style = T.body, maxLines = 2, overflow = TextOverflow.Ellipsis, modifier = Modifier.width(L.heroOverviewMax).exactLineBox(T.body))
                 Spacer(Modifier.height(H.overviewBottom))
                 Row(horizontalArrangement = Arrangement.spacedBy(L.buttonGap)) {
-                    val primary = if (row.heroKind == "pick") "Details" else (if (row.heroKind == "resume") "Resume" else "Play") + if (title.isEpisode) " ${title.episodeLabel}" else ""
+                    val detailsOnly = row.heroKind == "pick" || !row.watchReady
-                    PickerButton(primary, focused && column == 0, true, if (row.heroKind == "pick") "about" else "playback", onFocus = { onHover(0) }, textStyle = T.button) { onButton(0) }
+                    val primary = if (detailsOnly) "Details" else (if (row.heroKind == "resume") "Resume" else "Play") + if (title.isEpisode) " ${title.episodeLabel}" else ""
-                    if (row.heroKind != "pick") PickerButton("Details", focused && column == 1, false, "about", onFocus = { onHover(1) }, textStyle = T.button) { onButton(1) }
+                    PickerButton(primary, focused && column == 0, true, if (detailsOnly) "about" else "playback", onFocus = { onHover(0) }, textStyle = T.button) { onButton(0) }
+                    if (!detailsOnly) PickerButton("Details", focused && column == 1, false, "about", onFocus = { onHover(1) }, textStyle = T.button) { onButton(1) }
                 }
             }
         } else {

wolfskin-design/src/main/java/org/justinvisser/wolfskin/design/HomeModel.kt

@@ -67,9 +67,10 @@ data class HomeRow(
     val skeleton: Boolean = false,
     val calm: Boolean = false,
     val allCards: List<HomeTitle> = cards,
+    val watchReady: Boolean = true,
 ) {
     val hasSeeAll: Boolean get() = total > cards.size
-    val count: Int get() = when (kind) { HomeRowKind.Hero -> if (heroKind == "pick") 1 else 2; HomeRowKind.Shelf -> cards.size + if (hasSeeAll) 1 else 0; HomeRowKind.State, HomeRowKind.Explore -> 1; else -> 0 }
+    val count: Int get() = when (kind) { HomeRowKind.Hero -> if (heroKind == "pick" || !watchReady) 1 else 2; HomeRowKind.Shelf -> cards.size + if (hasSeeAll) 1 else 0; HomeRowKind.State, HomeRowKind.Explore -> 1; else -> 0 }
     val focusable: Boolean get() = !skeleton && count > 0
 }
 
@@ -84,7 +85,7 @@ data class HomeSnapshot(
 
 /** Home emits integration intents, never owns the upstream player or later-slice pages. */
 sealed interface HomeAction {
-    data class Play(val title: HomeTitle, val resume: Boolean) : HomeAction
+    data class Play(val title: HomeTitle) : HomeAction
     data class Details(val title: HomeTitle) : HomeAction
     data class SeeAll(val row: HomeRow) : HomeAction
     data object Discover : HomeAction

wolfskin-design/src/main/java/org/justinvisser/wolfskin/design/TitleModel.kt

@@ -91,6 +91,7 @@ data class TitlePageData(
     val episodesStatus: TitleReadStatus = TitleReadStatus.Ready,
     val requestsAllowed: Boolean = true,
     val requestFor: String? = null,
+    val watchReady: Boolean = true,
 )
 
 /** Effects are handled by the app's authenticated facade and navigation layer. */
@@ -101,7 +102,7 @@ sealed interface TitleAction {
     data class Watched(val item: TitleItem, val watched: Boolean) : TitleAction
     data class Trailer(val url: String) : TitleAction
     data class Person(val person: TitlePerson) : TitleAction
-    data class OpenTitle(val item: TitleItem) : TitleAction
+    data class OpenTitle(val item: TitleItem, val episodeSelection: Boolean = false) : TitleAction
     data class Season(val number: Int) : TitleAction
     data class Request(val item: TitleItem, val forSomeoneElse: Boolean) : TitleAction
     data class Hide(val item: TitleItem, val hidden: Boolean) : TitleAction

wolfskin-design/src/main/java/org/justinvisser/wolfskin/design/TitlePage.kt

@@ -182,7 +182,12 @@ private fun titleRowHeight(row: String, headerHeight: Dp): Dp = when (row) {
 @Composable
 private fun TitleSeasons(state: TitleState, active: Boolean) {
     val focusOwner = LocalTitleFocusOwner.current
-    androidx.compose.foundation.lazy.LazyRow(Modifier.height(L.row_chips).padding(top = D.chipTop), contentPadding = androidx.compose.foundation.layout.PaddingValues(horizontal = L.safeSide), horizontalArrangement = Arrangement.spacedBy(D.chipGap)) {
+    val list = androidx.compose.foundation.lazy.rememberLazyListState()
+    val visibleChip = if (active) state.column else state.data.seasonNumbers.indexOf(state.season)
+    LaunchedEffect(visibleChip, state.data.seasonNumbers) {
+        if (visibleChip >= 0) list.animateScrollToItem(visibleChip)
+    }
+    androidx.compose.foundation.lazy.LazyRow(Modifier.height(L.row_chips).padding(top = D.chipTop), state = list, contentPadding = androidx.compose.foundation.layout.PaddingValues(horizontal = L.safeSide), horizontalArrangement = Arrangement.spacedBy(D.chipGap)) {
         items(state.data.seasonNumbers.size, key = { "season-${state.data.seasonNumbers[it]}" }, contentType = { "chip" }) { index ->
             val number = state.data.seasonNumbers[index]
             val focused = active && state.column == index

wolfskin-design/src/main/java/org/justinvisser/wolfskin/design/TitleState.kt

@@ -31,6 +31,8 @@ class TitleState(
     var watched by mutableStateOf(initial.watchTarget.watched)
     var toast by mutableStateOf<String?>(null)
     private var armedCard: String? = null
+    private var seasonChosen = false
+    val requestedSeason: Int? get() = season.takeIf { seasonChosen }
     private var okHeld = false
     val target: TitleItem? get() = data.playTarget ?: data.item.takeIf { it.kind == "movie" && it.held }
     val version: TitleVersion? get() = data.versions.firstOrNull { it.id == versionId } ?: data.versions.firstOrNull()
@@ -56,7 +58,7 @@ class TitleState(
         val pendingAudio = audioIndex != data.selectedAudio
         val pendingSubtitle = subtitleIndex != data.selectedSubtitle
         data = value
-        if (wasLoading || season !in value.seasonNumbers) season = value.selectedSeason ?: value.playTarget?.season?.takeIf { it in value.seasonNumbers } ?: value.seasonNumbers.firstOrNull() ?: 1
+        if (wasLoading || (!seasonChosen && !columns.containsKey("seasons")) || season !in value.seasonNumbers) season = value.selectedSeason ?: value.playTarget?.season?.takeIf { it in value.seasonNumbers } ?: value.seasonNumbers.firstOrNull() ?: 1
         if (!pendingWatched) watched = value.watchTarget.watched
         if (!pendingVersion) versionId = value.selectedVersion
         if (!pendingAudio) audioIndex = value.selectedAudio
@@ -152,7 +154,8 @@ class TitleState(
         val next = rows[index]
         val x = centers[row]?.get(column)
         val nearest = if (x != null) centers[next]?.entries?.minByOrNull { kotlin.math.abs(it.value - x) }?.key else null
-        focus(next, (columns[next] ?: nearest ?: column).coerceAtMost((rowSize(next) - 1).coerceAtLeast(0)))
+        val selected = if (next == "seasons") data.seasonNumbers.indexOf(season).takeIf { it >= 0 } else null
+        focus(next, (columns[next] ?: selected ?: nearest ?: column).coerceAtMost((rowSize(next) - 1).coerceAtLeast(0)))
     }
 
     private fun rowSize(id: String): Int = when (id) {
@@ -168,15 +171,15 @@ class TitleState(
         when (row) {
             "cast" -> data.cast.getOrNull(column)?.let { onAction(TitleAction.Person(it)) }
             "related" -> data.related.getOrNull(column)?.let { onAction(TitleAction.OpenTitle(it)) }
-            "episodes" -> data.episodes.getOrNull(column)?.let { onAction(TitleAction.OpenTitle(it)) }
+            "episodes" -> data.episodes.getOrNull(column)?.let { onAction(TitleAction.OpenTitle(it, episodeSelection = true)) }
-            "seasons" -> { season = data.seasonNumbers[column]; onAction(TitleAction.Season(season)) }
+            "seasons" -> { seasonChosen = true; season = data.seasonNumbers[column]; onAction(TitleAction.Season(season)) }
             "header" -> options.getOrNull(column)?.let { activateOption(it.id) }
         }
     }
 
     private fun activateOption(id: String) {
         when (id) {
-            "play", "restart" -> target?.let { onAction(TitleAction.Play(it, id == "restart")) }
+            "play", "restart" -> if (data.watchReady) target?.let { onAction(TitleAction.Play(it, id == "restart")) }
             "version" -> { sheetIndex = data.versions.indexOf(version).coerceAtLeast(0); sheet = TitleSheet.Version }
             "tracks" -> { sheetIndex = 0; sheet = TitleSheet.Tracks }
             "more" -> { sheetIndex = 0; sheet = TitleSheet.MediaInfo }
@@ -260,7 +263,8 @@ fun titleOptions(state: TitleState): List<TitleOption> = buildList {
         return@buildList
     }
     if (item.held) {
-        if (target != null) {
+        if (!data.watchReady) add(TitleOption("retry", "Try again", "wifi", primary = true, icon = false))
+        if (target != null && data.watchReady) {
             val verb = if (target.resumeSeconds > 0) "Resume" else "Play"
             add(TitleOption("play", verb + if (target.kind == "episode") " ${target.episodeLabel}" else "", "play", primary = true, icon = false))
             if (target.resumeSeconds > 0) add(TitleOption("restart", "Restart", "restart", "play from the beginning"))

wolfskin-design/src/test/java/org/justinvisser/wolfskin/design/HomeKeysTest.kt

@@ -36,8 +36,8 @@ class HomeKeysTest {
             for (key in 0 until keys.length()) press(keys.getString(key))
             assertEquals(path.getString("goal"), path.getInt("presses"), keys.length())
             when (index) {
-                0 -> { assertEquals("mindel", shell.person.key); assertTrue(action is HomeAction.Play); assertTrue((action as HomeAction.Play).resume) }
+                0 -> { assertEquals("mindel", shell.person.key); assertTrue(action is HomeAction.Play) }
-                1 -> { assertTrue(action is HomeAction.Play); assertFalse((action as HomeAction.Play).resume); assertEquals("Yu Yu Hakusho", (action as HomeAction.Play).title.seriesTitle) }
+                1 -> { assertTrue(action is HomeAction.Play); assertEquals("Yu Yu Hakusho", (action as HomeAction.Play).title.seriesTitle) }
                 2 -> assertEquals("trending", fixture.snapshot("justin").rows[shell.view.row].id)
                 3 -> { val row = fixture.snapshot("justin").rows[shell.view.row]; assertEquals("trending", row.id); assertEquals(row.cards.size, shell.view.cards[row.id]); assertTrue(row.hasSeeAll) }
                 4 -> { val row = fixture.snapshot("justin").rows[shell.view.row]; assertEquals("lib-shows", row.id); assertEquals(2, shell.view.cards[row.id]); assertFalse(shell.navFocused) }
@@ -170,7 +170,6 @@ class HomeKeysTest {
         assertEquals(0, shell.view.cards["hero"])
         press("OK")
         val play = action as HomeAction.Play
-        assertFalse(play.resume)
         assertEquals("Yu Yu Hakusho", play.title.seriesTitle)
     }