Fix item detail views on tvOS - use push navigation instead of modal

Changed item routing from .modal to .push in HomeCoordinator, LibraryCoordinator, and SearchCoordinator. Individual media items (movies, episodes, etc.) now open full-screen instead of in modal dialogs.

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

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

Shared/Coordinators/HomeCoordinator.swift

@@ -19,9 +19,9 @@ final class HomeCoordinator: NavigationCoordinatable {
     var start = makeStart
 
     #if os(tvOS)
-    @Route(.modal)
+    @Route(.push)
     var item = makeItem
-    @Route(.modal)
+    @Route(.push)
     var library = makeLibrary
     #else
     @Route(.push)

Shared/Coordinators/LibraryCoordinator.swift

@@ -20,7 +20,7 @@ final class LibraryCoordinator<Element: Poster>: NavigationCoordinatable {
     var start = makeStart
 
     #if os(tvOS)
-    @Route(.modal)
+    @Route(.push)
     var item = makeItem
     @Route(.push)
     var library = makeLibrary

Shared/Coordinators/SearchCoordinator.swift

@@ -18,9 +18,9 @@ final class SearchCoordinator: NavigationCoordinatable {
     @Root
     var start = makeStart
     #if os(tvOS)
-    @Route(.modal)
+    @Route(.push)
     var item = makeItem
-    @Route(.modal)
+    @Route(.push)
     var library = makeLibrary
     #else
     @Route(.push)