From 83ebf25d9f139928792c0122ade7425a5a592530 Mon Sep 17 00:00:00 2001
From: justinzeus <justinfvisser@gmail.com>
Date: Sat, 7 Nov 2026 18:33:36 +0100
Subject: [PATCH] Keep updater navigation motion bounded

---
 .../org/justinvisser/wolfskin/tv/WolfskinApp.kt     |  8 +++++++-
 .../wolfskin/tv/update/UpdateNavigation.kt          | 13 +++++++++++++
 wolfskin-design/build.gradle.kts                    |  2 +-
 3 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 app/src/wolfskin/java/org/justinvisser/wolfskin/tv/update/UpdateNavigation.kt

diff --git a/app/src/wolfskin/java/org/justinvisser/wolfskin/tv/WolfskinApp.kt b/app/src/wolfskin/java/org/justinvisser/wolfskin/tv/WolfskinApp.kt
index a1d5c5e7..caeb9543 100644
--- a/app/src/wolfskin/java/org/justinvisser/wolfskin/tv/WolfskinApp.kt
+++ b/app/src/wolfskin/java/org/justinvisser/wolfskin/tv/WolfskinApp.kt
@@ -305,7 +305,13 @@ fun WolfskinApp(
                     onBack = { if (navigationManager.backStack.last().fullScreen) navigationManager.goBack() else state.key(org.justinvisser.wolfskin.design.ShellKey.Back) },
                     entryDecorators = listOf(rememberSaveableStateHolderNavEntryDecorator(), rememberViewModelStoreNavEntryDecorator()),
                     entryProvider = { destination ->
-                        NavEntry(destination, contentKey = "${destination}_${server.id}_${user.id}") {
+                        NavEntry(
+                            destination,
+                            contentKey = "${destination}_${server.id}_${user.id}",
+                            metadata = if (destination is Destination.Wolfskin && destination.route == "updates") {
+                                org.justinvisser.wolfskin.tv.update.updatesRouteTransitions
+                            } else emptyMap(),
+                        ) {
                             // Cached entries must not retain the launch shell after sign-in completes.
                             val state = LocalShellState.current
                             val discover = LocalDiscoverState.current
diff --git a/app/src/wolfskin/java/org/justinvisser/wolfskin/tv/update/UpdateNavigation.kt b/app/src/wolfskin/java/org/justinvisser/wolfskin/tv/update/UpdateNavigation.kt
new file mode 100644
index 00000000..ec5de195
--- /dev/null
+++ b/app/src/wolfskin/java/org/justinvisser/wolfskin/tv/update/UpdateNavigation.kt
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0-only
+package org.justinvisser.wolfskin.tv.update
+
+import androidx.compose.animation.EnterTransition
+import androidx.compose.animation.ExitTransition
+import androidx.compose.animation.togetherWith
+import androidx.navigation3.ui.NavDisplay
+
+/** Updates animates bounded content only; the retained nav never crossfades as a full scene. */
+internal val updatesRouteTransitions =
+    NavDisplay.transitionSpec { (EnterTransition.None togetherWith ExitTransition.None).using(null) } +
+        NavDisplay.popTransitionSpec { (EnterTransition.None togetherWith ExitTransition.None).using(null) } +
+        NavDisplay.predictivePopTransitionSpec { (EnterTransition.None togetherWith ExitTransition.None).using(null) }
diff --git a/wolfskin-design/build.gradle.kts b/wolfskin-design/build.gradle.kts
index d1275edb..f1eea2d9 100644
--- a/wolfskin-design/build.gradle.kts
+++ b/wolfskin-design/build.gradle.kts
@@ -30,7 +30,7 @@ val cacheRobolectricSdk by tasks.registering(Copy::class) {
 }
 
 val checkTokenDrift by tasks.registering {
-    inputs.files(fileTree(projectDir) { include("tokens.json", "shell-tokens.json", "title-tokens.json", "home-tokens.json", "discover-tokens.json", "generate_tokens.py", "tokens.css", "tokens.sha256", "src/main/java/**/WolfskinTokens.kt") })
+    inputs.files(fileTree(projectDir) { include("tokens.json", "shell-tokens.json", "title-tokens.json", "home-tokens.json", "discover-tokens.json", "update-tokens.json", "generate_tokens.py", "tokens.css", "tokens.sha256", "src/main/java/**/WolfskinTokens.kt") })
     doLast {
         file("tokens.sha256").readLines().forEach { line ->
             val (expected, name) = line.split("  ", limit = 2)