Dart 3.9 / Flutter 3.35 [first LLM release] (#2714)

I got carried away with Gemini and basically rewrote CI and the release
process for the new LLM reality. This work was largely completed by
Gemini.

- Bump all SDK versions to the current beta (3.9.0-0)
- Run `flutter channel beta`
- Wrote `ci_script.dart` to replace the bash scripts
- Converted repository to pub workspace #2499 
- Added llm.md and release.md
- Added redirect for deprecated Samples Index

## Pre-launch Checklist

- [x] I read the [Flutter Style Guide] _recently_, and have followed its
advice.
- [x] I signed the [CLA].
- [x] I read the [Contributors Guide].
- [x] I have added sample code updates to the [changelog].
- [x] I updated/added relevant documentation (doc comments with `///`).

desktop_photo_search/fluent_ui/lib/src/widgets/photo_details.dart

@@ -39,20 +39,18 @@ class _PhotoDetailsState extends State<PhotoDetails> {
           uri: Uri.parse(
             'https://unsplash.com/@${widget.photo.user!.username}?utm_source=$unsplashAppName&utm_medium=referral',
           ),
-          builder:
-              (context, followLink) => HyperlinkButton(
-                onPressed: followLink,
-                child: Text(widget.photo.user!.name),
-              ),
+          builder: (context, followLink) => HyperlinkButton(
+            onPressed: followLink,
+            child: Text(widget.photo.user!.name),
+          ),
         ),
         const Text('on'),
         Link(
           uri: _unsplashHomepage,
-          builder:
-              (context, followLink) => HyperlinkButton(
-                onPressed: followLink,
-                child: const Text('Unsplash'),
-              ),
+          builder: (context, followLink) => HyperlinkButton(
+            onPressed: followLink,
+            child: const Text('Unsplash'),
+          ),
         ),
       ],
     );

desktop_photo_search/fluent_ui/lib/src/widgets/photo_search_dialog.dart

@@ -48,13 +48,12 @@ class _PhotoSearchDialogState extends State<PhotoSearchDialog> {
     ),
     actions: [
       FilledButton(
-        onPressed:
-            _searchEnabled
-                ? () {
-                  widget.callback(_controller.text);
-                  Navigator.of(context).pop();
-                }
-                : null,
+        onPressed: _searchEnabled
+            ? () {
+                widget.callback(_controller.text);
+                Navigator.of(context).pop();
+              }
+            : null,
         child: const Text('Search'),
       ),
       Button(

desktop_photo_search/fluent_ui/lib/src/widgets/policy_dialog.dart

@@ -29,16 +29,15 @@ class PolicyDialog extends StatelessWidget {
                     fontWeight: FontWeight.bold,
                     color: Colors.blue.normal,
                   ),
-                  recognizer:
-                      TapGestureRecognizer()
-                        ..onTap = () async {
-                          final url = Uri.parse(
-                            'https://policies.google.com/terms',
-                          );
-                          if (await url_launcher.canLaunchUrl(url)) {
-                            await url_launcher.launchUrl(url);
-                          }
-                        },
+                  recognizer: TapGestureRecognizer()
+                    ..onTap = () async {
+                      final url = Uri.parse(
+                        'https://policies.google.com/terms',
+                      );
+                      if (await url_launcher.canLaunchUrl(url)) {
+                        await url_launcher.launchUrl(url);
+                      }
+                    },
                 ),
               ],
             ),
@@ -55,14 +54,13 @@ class PolicyDialog extends StatelessWidget {
                     fontWeight: FontWeight.bold,
                     color: Colors.blue.normal,
                   ),
-                  recognizer:
-                      TapGestureRecognizer()
-                        ..onTap = () async {
-                          final url = Uri.parse('https://unsplash.com/terms');
-                          if (await url_launcher.canLaunchUrl(url)) {
-                            await url_launcher.launchUrl(url);
-                          }
-                        },
+                  recognizer: TapGestureRecognizer()
+                    ..onTap = () async {
+                      final url = Uri.parse('https://unsplash.com/terms');
+                      if (await url_launcher.canLaunchUrl(url)) {
+                        await url_launcher.launchUrl(url);
+                      }
+                    },
                 ),
               ],
             ),

desktop_photo_search/fluent_ui/lib/src/widgets/split.dart

@@ -144,7 +144,9 @@ class _SplitState extends State<Split> {
             child: DecoratedBox(
               decoration: BoxDecoration(
                 color: Theme.of(context).dividerColor,
-                borderRadius: BorderRadius.circular(Split.dividerMainAxisSize),
+                borderRadius: BorderRadius.circular(
+                  Split.dividerMainAxisSize,
+                ),
               ),
               child: SizedBox(
                 height: isHorizontal ? 2.0 : Split.dividerMainAxisSize - 2.0,

desktop_photo_search/fluent_ui/lib/src/widgets/unsplash_notice.dart

@@ -68,13 +68,12 @@ class _UnsplashDialog extends StatelessWidget {
           children: [
             TextSpan(
               text: 'Unsplash',
-              recognizer:
-                  TapGestureRecognizer()
-                    ..onTap = () async {
-                      if (!await launchUrl(_unsplashHomepage)) {
-                        throw 'Could not launch $_unsplashHomepage';
-                      }
-                    },
+              recognizer: TapGestureRecognizer()
+                ..onTap = () async {
+                  if (!await launchUrl(_unsplashHomepage)) {
+                    throw 'Could not launch $_unsplashHomepage';
+                  }
+                },
               style: TextStyle(color: Colors.blue),
             ),
             const TextSpan(
@@ -87,16 +86,18 @@ class _UnsplashDialog extends StatelessWidget {
             ),
             TextSpan(
               text: 'how Unsplash collects and uses data',
-              recognizer:
-                  TapGestureRecognizer()
-                    ..onTap = () async {
-                      if (!await launchUrl(_unsplashPrivacyPolicy)) {
-                        throw 'Could not launch $_unsplashPrivacyPolicy';
-                      }
-                    },
+              recognizer: TapGestureRecognizer()
+                ..onTap = () async {
+                  if (!await launchUrl(_unsplashPrivacyPolicy)) {
+                    throw 'Could not launch $_unsplashPrivacyPolicy';
+                  }
+                },
               style: TextStyle(color: Colors.blue),
             ),
-            const TextSpan(text: '.', style: TextStyle(color: Colors.grey)),
+            const TextSpan(
+              text: '.',
+              style: TextStyle(color: Colors.grey),
+            ),
           ],
         ),
       ),

desktop_photo_search/fluent_ui/lib/src/widgets/unsplash_search_content.dart

@@ -44,34 +44,33 @@ class _UnsplashSearchContentState extends State<UnsplashSearchContent> {
         ),
       ),
       secondChild: Center(
-        child:
-            photoSearchModel.selectedPhoto != null
-                ? PhotoDetails(
-                  photo: photoSearchModel.selectedPhoto!,
-                  onPhotoSave: (photo) async {
-                    final saveLocation = await getSaveLocation(
-                      suggestedName: '${photo.id}.jpg',
-                      acceptedTypeGroups: [
-                        const XTypeGroup(
-                          label: 'JPG',
-                          extensions: ['jpg'],
-                          mimeTypes: ['image/jpeg'],
-                        ),
-                      ],
+        child: photoSearchModel.selectedPhoto != null
+            ? PhotoDetails(
+                photo: photoSearchModel.selectedPhoto!,
+                onPhotoSave: (photo) async {
+                  final saveLocation = await getSaveLocation(
+                    suggestedName: '${photo.id}.jpg',
+                    acceptedTypeGroups: [
+                      const XTypeGroup(
+                        label: 'JPG',
+                        extensions: ['jpg'],
+                        mimeTypes: ['image/jpeg'],
+                      ),
+                    ],
+                  );
+                  if (saveLocation != null) {
+                    final fileData = await photoSearchModel.download(
+                      photo: photo,
                     );
-                    if (saveLocation != null) {
-                      final fileData = await photoSearchModel.download(
-                        photo: photo,
-                      );
-                      final photoFile = XFile.fromData(
-                        fileData,
-                        mimeType: 'image/jpeg',
-                      );
-                      await photoFile.saveTo(saveLocation.path);
-                    }
-                  },
-                )
-                : Container(),
+                    final photoFile = XFile.fromData(
+                      fileData,
+                      mimeType: 'image/jpeg',
+                    );
+                    await photoFile.saveTo(saveLocation.path);
+                  }
+                },
+              )
+            : Container(),
       ),
     );
   }
@@ -85,26 +84,25 @@ class _UnsplashSearchContentState extends State<UnsplashSearchContent> {
 
     return TreeViewItem(
       content: Text(searchEntry.query),
-      children:
-          searchEntry.photos
-              .map<TreeViewItem>(
-                (photo) => TreeViewItem(
-                  content: Semantics(
-                    button: true,
-                    onTap: () => selectPhoto(photo),
-                    label: labelForPhoto(photo),
-                    excludeSemantics: true,
-                    child: GestureDetector(
-                      onTap: () => selectPhoto(photo),
-                      child: Text(
-                        labelForPhoto(photo),
-                        style: const TextStyle(color: Colors.black),
-                      ),
-                    ),
+      children: searchEntry.photos
+          .map<TreeViewItem>(
+            (photo) => TreeViewItem(
+              content: Semantics(
+                button: true,
+                onTap: () => selectPhoto(photo),
+                label: labelForPhoto(photo),
+                excludeSemantics: true,
+                child: GestureDetector(
+                  onTap: () => selectPhoto(photo),
+                  child: Text(
+                    labelForPhoto(photo),
+                    style: const TextStyle(color: Colors.black),
                   ),
                 ),
-              )
-              .toList(),
+              ),
+            ),
+          )
+          .toList(),
     );
   }
 }