Add video tutorial link to the Deep Links panel (#9925)

* Add tutorialVideoUrl field to ScreenMetaData for deep links video

* Update VideoTutorialLink to support custom video URLs

Use the tutorialVideoUrl from ScreenMetaData when available,
falling back to the default DevTools YouTube video timestamp.

* Use youtu.be short URL format for deep links tutorial video

* Move deep links tutorial video URL to a named constant

* Assert that VideoTutorialLink has a video URL or timestamp

* Add release notes entry for deep links tutorial link

packages/devtools_app/lib/src/framework/scaffold/status_line.dart

diff --git a/packages/devtools_app/lib/src/framework/scaffold/status_line.dart b/packages/devtools_app/lib/src/framework/scaffold/status_line.dart
index 54e78dc..9c362da 100644
--- a/packages/devtools_app/lib/src/framework/scaffold/status_line.dart
+++ b/packages/devtools_app/lib/src/framework/scaffold/status_line.dart
@@ -90,7 +90,9 @@
     final pageStatus = currentScreen.buildStatus(context);
     final widerThanXxs = screenWidth > MediaSize.xxs;
     final screenMetaData = ScreenMetaData.lookup(currentScreen.screenId);
-    final showVideoTutorial = screenMetaData?.tutorialVideoTimestamp != null;
+    final showVideoTutorial =
+        screenMetaData?.tutorialVideoTimestamp != null ||
+        screenMetaData?.tutorialVideoUrl != null;
     return [
       Row(
         mainAxisSize: MainAxisSize.min,
@@ -237,12 +239,15 @@
 /// A widget that links to the "Dive in to DevTools" YouTube video at the
 /// chapter for the given [screenMetaData].
 class VideoTutorialLink extends StatelessWidget {
-  const VideoTutorialLink({
+  VideoTutorialLink({
     super.key,
     required this.screenMetaData,
     required this.screenWidth,
     required this.highlightForConnection,
-  });
+  }) : assert(
+         screenMetaData.tutorialVideoTimestamp != null ||
+             screenMetaData.tutorialVideoUrl != null,
+       );
 
   final ScreenMetaData screenMetaData;
 
@@ -262,6 +267,7 @@
       link: GaLink(
         display: screenWidth <= MediaSize.xs ? 'Tutorial' : 'Watch tutorial',
         url:
+            screenMetaData.tutorialVideoUrl ??
             '$_devToolsYouTubeVideoUrl${screenMetaData.tutorialVideoTimestamp}',
         gaScreenName: screenMetaData.id,
         gaSelectedItemDescription:

packages/devtools_app/lib/src/shared/framework/screen.dart

diff --git a/packages/devtools_app/lib/src/shared/framework/screen.dart b/packages/devtools_app/lib/src/shared/framework/screen.dart
index 6e090ff..32f3d21 100644
--- a/packages/devtools_app/lib/src/shared/framework/screen.dart
+++ b/packages/devtools_app/lib/src/shared/framework/screen.dart
@@ -27,6 +27,8 @@
   defaultValue: true,
 );
 
+const _deepLinksTutorialVideoUrl = 'https://youtu.be/d7sZL6h1Elw';
+
 enum ScreenMetaData {
   home(
     'home',
@@ -124,6 +126,7 @@
     requiresConnection: false,
     requiresDartVm: true,
     requiresFlutter: true,
+    tutorialVideoUrl: _deepLinksTutorialVideoUrl,
   ),
   vmTools(
     'vm-tools',
@@ -154,6 +157,7 @@
     this.worksWithOfflineData = false,
     this.requiresLibrary,
     this.tutorialVideoTimestamp,
+    this.tutorialVideoUrl,
   }) : assert(
          icon == null || iconAsset == null,
          'Only one of icon or iconAsset may be specified.',
@@ -179,6 +183,13 @@
   /// a particular chapter.
   final String? tutorialVideoTimestamp;
 
+  /// A custom video tutorial URL for a screen.
+  ///
+  /// If provided, this URL will be used instead of the default
+  /// "Dive in to DevTools" YouTube video timestamp. This is used for
+  /// screens that have their own dedicated video tutorials.
+  final String? tutorialVideoUrl;
+
   /// Looks up the [ScreenMetaData] value for the screen [id].
   static ScreenMetaData? lookup(String id) {
     return ScreenMetaData.values.firstWhereOrNull((screen) => screen.id == id);

packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md

diff --git a/packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md b/packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md
index 2d797c8..f589bd1 100644
--- a/packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md
+++ b/packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md
@@ -61,7 +61,9 @@
 
 ## Deep links tool updates
 
-TODO: Remove this section if there are not any updates.
+* Added a "Watch tutorial" link to the status line that points to the
+  [deep links video tutorial](https://youtu.be/d7sZL6h1Elw).
+  [#9925](https://github.com/flutter/devtools/pull/9925)
 
 ## VS Code sidebar updates