refactor: centralize playable media state

Move playback-related media state into shared model types and make the player consume a single PlayableMedia object instead of separately loading MediaItems, track preferences, resume positions, and media segments.

This updates PlayableMediaRepository to return playable media bundles, seeds the player playlist with the current item, keeps next-up entries in the same model, restores resume/segment handling, and fixes current queue highlighting.

The change also moves track preference models into core-model, centralizes Jellyfin BaseItemDto conversion, removes placeholder movie audio/subtitle fields, bumps the offline Room schema, and updates mobile/TV queue UI code for the playlist model.

Verification:
./gradlew --no-daemon :core-model:compileDebugKotlin :core:compileDebugKotlin :data:compileDebugKotlin :app:compileDebugKotlin

app-tv/build.gradle.kts

@@ -51,8 +51,8 @@ kotlin {
 }
 
 dependencies {
-    implementation(project(":data"))
     implementation(project(":core"))
+    implementation(project(":core-model"))
     implementation(project(":core-ui"))
     implementation(libs.androidx.core.ktx)
     implementation(libs.androidx.lifecycle.runtime.ktx)

app-tv/src/androidTest/java/hu/bbara/purefin/ui/screen/player/components/TvPlayerControlsOverlayTest.kt

@@ -40,7 +40,7 @@ import androidx.compose.ui.test.performSemanticsAction
 import androidx.compose.ui.test.pressKey
 import androidx.compose.ui.unit.dp
 import hu.bbara.purefin.player.model.PlayerUiState
-import hu.bbara.purefin.player.model.QueueItemUi
+import hu.bbara.purefin.player.model.PlaylistElementUiModel
 import hu.bbara.purefin.player.model.TrackOption
 import hu.bbara.purefin.player.model.TrackType
 import hu.bbara.purefin.ui.screen.player.TV_HIDDEN_STOP_FEEDBACK_MS
@@ -247,14 +247,14 @@ class TvPlayerControlsOverlayTest {
                 OverlayHost(
                     uiState = samplePlayerState().copy(
                         queue = listOf(
-                            QueueItemUi(
+                            PlaylistElementUiModel(
                                 id = "first",
                                 title = "Episode 1",
                                 subtitle = "Fallback entry",
                                 artworkUrl = null,
                                 isCurrent = false
                             ),
-                            QueueItemUi(
+                            PlaylistElementUiModel(
                                 id = "second",
                                 title = "Episode 2",
                                 subtitle = "Later",
@@ -871,21 +871,21 @@ private fun samplePlayerState(): PlayerUiState = PlayerUiState(
     positionMs = 120_000,
     bufferedMs = 240_000,
     queue = listOf(
-        QueueItemUi(
+        PlaylistElementUiModel(
             id = "played",
             title = "Already Played",
             subtitle = "Episode 0",
             artworkUrl = null,
             isCurrent = false
         ),
-        QueueItemUi(
+        PlaylistElementUiModel(
             id = "current",
             title = "Currently Playing",
             subtitle = "Episode 1",
             artworkUrl = null,
             isCurrent = true
         ),
-        QueueItemUi(
+        PlaylistElementUiModel(
             id = "next",
             title = "Episode 2",
             subtitle = "Up next",

app-tv/src/main/java/hu/bbara/purefin/ui/screen/player/TvPlayerScreen.kt

@@ -276,7 +276,7 @@ fun TvPlayerScreen(
                 onExpandPlaylist = expandPlaylist,
                 onCollapsePlaylist = collapsePlaylistToControls,
                 onSelectQueueItem = { id ->
-                    viewModel.playQueueItem(id, TV_CONTROLS_AUTO_HIDE_MS)
+                    viewModel.playQueueItem(id)
                     collapsePlaylistToControls()
                 },
                 qualityButtonEnabled = uiState.qualityTracks.isNotEmpty(),

app-tv/src/main/java/hu/bbara/purefin/ui/screen/player/components/TvPlayerQueuePanel.kt

@@ -20,11 +20,11 @@ import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.withFrameNanos
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
+import androidx.compose.runtime.withFrameNanos
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.focus.FocusRequester
@@ -41,9 +41,9 @@ import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
-import hu.bbara.purefin.player.model.PlayerUiState
-import hu.bbara.purefin.player.model.QueueItemUi
 import coil3.compose.AsyncImage
+import hu.bbara.purefin.player.model.PlayerUiState
+import hu.bbara.purefin.player.model.PlaylistElementUiModel
 
 internal const val TvPlayerPlaylistRowTag = "tv_player_playlist_row"
 internal const val TvPlayerPlaylistCurrentItemTag = "tv_player_playlist_current_item"
@@ -159,7 +159,7 @@ internal fun TvPlayerQueuePanel(
 
 @Composable
 private fun TvQueueRowCard(
-    item: QueueItemUi,
+    item: PlaylistElementUiModel,
     isCurrent: Boolean,
     isFirst: Boolean,
     isLast: Boolean,