Fix tvOS navigation - use push everywhere except Media tab channels

Changes:
- MediaCoordinator: Use .fullScreen for tvOS (full-screen display with navigation)
- HomeCoordinator, LibraryCoordinator, SearchCoordinator: Use .push without NavigationViewCoordinator wrappers
- Unified tvOS and iOS coordinator return types for push navigation

This fixes:
✅ Channels display full-screen (not modal popup)
✅ Login and settings use full-screen navigation
✅ Items from Home/Search display correctly

Known issues with .fullScreen presentation:
- Pressing ESC on error dismisses entire channel instead of going back one level
- Video player doesn't respond to ESC during playback

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Shared/Coordinators/HomeCoordinator.swift

@@ -30,15 +30,6 @@ final class HomeCoordinator: NavigationCoordinatable {
     var library = makeLibrary
     #endif
 
-    #if os(tvOS)
-    func makeItem(item: BaseItemDto) -> NavigationViewCoordinator<ItemCoordinator> {
-        NavigationViewCoordinator(ItemCoordinator(item: item))
-    }
-
-    func makeLibrary(viewModel: PagingLibraryViewModel<BaseItemDto>) -> NavigationViewCoordinator<LibraryCoordinator<BaseItemDto>> {
-        NavigationViewCoordinator(LibraryCoordinator<BaseItemDto>(viewModel: viewModel))
-    }
-    #else
     func makeItem(item: BaseItemDto) -> ItemCoordinator {
         ItemCoordinator(item: item)
     }
@@ -46,7 +37,6 @@ final class HomeCoordinator: NavigationCoordinatable {
     func makeLibrary(viewModel: PagingLibraryViewModel<BaseItemDto>) -> LibraryCoordinator<BaseItemDto> {
         LibraryCoordinator(viewModel: viewModel)
     }
-    #endif
 
     @ViewBuilder
     func makeStart() -> some View {

Shared/Coordinators/LibraryCoordinator.swift

@@ -44,15 +44,6 @@ final class LibraryCoordinator<Element: Poster>: NavigationCoordinatable {
         PagingLibraryView(viewModel: viewModel)
     }
 
-    #if os(tvOS)
-    func makeItem(item: BaseItemDto) -> NavigationViewCoordinator<ItemCoordinator> {
-        NavigationViewCoordinator(ItemCoordinator(item: item))
-    }
-
-    func makeLibrary(viewModel: PagingLibraryViewModel<BaseItemDto>) -> NavigationViewCoordinator<LibraryCoordinator<BaseItemDto>> {
-        NavigationViewCoordinator(LibraryCoordinator<BaseItemDto>(viewModel: viewModel))
-    }
-    #else
     func makeItem(item: BaseItemDto) -> ItemCoordinator {
         ItemCoordinator(item: item)
     }
@@ -61,6 +52,7 @@ final class LibraryCoordinator<Element: Poster>: NavigationCoordinatable {
         LibraryCoordinator<BaseItemDto>(viewModel: viewModel)
     }
 
+    #if !os(tvOS)
     func makeFilter(parameters: FilterCoordinator.Parameters) -> NavigationViewCoordinator<FilterCoordinator> {
         NavigationViewCoordinator(FilterCoordinator(parameters: parameters))
     }

Shared/Coordinators/MediaCoordinator.swift

@@ -18,9 +18,9 @@ final class MediaCoordinator: NavigationCoordinatable {
     @Root
     var start = makeStart
     #if os(tvOS)
-    @Route(.push)
+    @Route(.fullScreen)
     var library = makeLibrary
-    @Route(.push)
+    @Route(.fullScreen)
     var liveTV = makeLiveTV
     #else
     @Route(.push)

Shared/Coordinators/SearchCoordinator.swift

@@ -31,15 +31,6 @@ final class SearchCoordinator: NavigationCoordinatable {
     var filter = makeFilter
     #endif
 
-    #if os(tvOS)
-    func makeItem(item: BaseItemDto) -> NavigationViewCoordinator<ItemCoordinator> {
-        NavigationViewCoordinator(ItemCoordinator(item: item))
-    }
-
-    func makeLibrary(viewModel: PagingLibraryViewModel<BaseItemDto>) -> NavigationViewCoordinator<LibraryCoordinator<BaseItemDto>> {
-        NavigationViewCoordinator(LibraryCoordinator(viewModel: viewModel))
-    }
-    #else
     func makeItem(item: BaseItemDto) -> ItemCoordinator {
         ItemCoordinator(item: item)
     }
@@ -48,6 +39,7 @@ final class SearchCoordinator: NavigationCoordinatable {
         LibraryCoordinator(viewModel: viewModel)
     }
 
+    #if !os(tvOS)
     func makeFilter(parameters: FilterCoordinator.Parameters) -> NavigationViewCoordinator<FilterCoordinator> {
         NavigationViewCoordinator(FilterCoordinator(parameters: parameters))
     }