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 `///`).

form_app/lib/main.dart

@@ -24,7 +24,8 @@ const double windowWidth = 480;
 const double windowHeight = 854;
 
 void setupWindow() {
-  if (!kIsWeb && (Platform.isWindows || Platform.isLinux || Platform.isMacOS)) {
+  if (!kIsWeb &&
+      (Platform.isWindows || Platform.isLinux || Platform.isMacOS)) {
     WidgetsFlutterBinding.ensureInitialized();
     setWindowTitle('Form Samples');
     setWindowMinSize(const Size(windowWidth, windowHeight));
@@ -45,11 +46,10 @@ final demos = [
   Demo(
     name: 'Sign in with HTTP',
     route: 'signin_http',
-    builder:
-        (context) => SignInHttpDemo(
-          // This sample uses a mock HTTP client.
-          httpClient: mockClient,
-        ),
+    builder: (context) => SignInHttpDemo(
+      // This sample uses a mock HTTP client.
+      httpClient: mockClient,
+    ),
   ),
   Demo(
     name: 'Autofill',
@@ -130,5 +130,9 @@ class Demo {
   final String route;
   final WidgetBuilder builder;
 
-  const Demo({required this.name, required this.route, required this.builder});
+  const Demo({
+    required this.name,
+    required this.route,
+    required this.builder,
+  });
 }

form_app/lib/src/autofill.dart

@@ -99,7 +99,9 @@ class _AutofillDemoState extends State<AutofillDemo> {
                       ),
                       autofillHints: [AutofillHints.countryCode],
                     ),
-                  ].expand((widget) => [widget, const SizedBox(height: 24)]),
+                  ].expand(
+                    (widget) => [widget, const SizedBox(height: 24)],
+                  ),
                 ],
               ),
             ),

form_app/lib/src/form_widgets.dart

@@ -77,11 +77,14 @@ class _FormWidgetsDemoState extends State<FormWidgetsDemo> {
                           crossAxisAlignment: CrossAxisAlignment.start,
                           children: [
                             Row(
-                              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                              mainAxisAlignment:
+                                  MainAxisAlignment.spaceBetween,
                               children: [
                                 Text(
                                   'Estimated value',
-                                  style: Theme.of(context).textTheme.bodyLarge,
+                                  style: Theme.of(
+                                    context,
+                                  ).textTheme.bodyLarge,
                                 ),
                               ],
                             ),
@@ -90,7 +93,9 @@ class _FormWidgetsDemoState extends State<FormWidgetsDemo> {
                                 symbol: "\$",
                                 decimalDigits: 0,
                               ).format(maxValue),
-                              style: Theme.of(context).textTheme.titleMedium,
+                              style: Theme.of(
+                                context,
+                              ).textTheme.titleMedium,
                             ),
                             Slider(
                               min: 0,
@@ -119,7 +124,9 @@ class _FormWidgetsDemoState extends State<FormWidgetsDemo> {
                             ),
                             Text(
                               'Brushed Teeth',
-                              style: Theme.of(context).textTheme.titleMedium,
+                              style: Theme.of(
+                                context,
+                              ).textTheme.titleMedium,
                             ),
                           ],
                         ),

form_app/lib/src/http/mock_client.dart

@@ -11,7 +11,8 @@ Future<http.Response> _mockHandler(http.Request request) async {
     json.decode(request.body) as Map<String, dynamic>,
   );
 
-  if (decodedJson['email'] == 'root' && decodedJson['password'] == 'password') {
+  if (decodedJson['email'] == 'root' &&
+      decodedJson['password'] == 'password') {
     return http.Response('', 200);
   }
 

form_app/lib/src/sign_in_http.dart

@@ -97,16 +97,15 @@ class _SignInHttpDemoState extends State<SignInHttpDemo> {
   void _showDialog(String message) {
     showDialog<void>(
       context: context,
-      builder:
-          (context) => AlertDialog(
-            title: Text(message),
-            actions: [
-              TextButton(
-                child: const Text('OK'),
-                onPressed: () => Navigator.of(context).pop(),
-              ),
-            ],
+      builder: (context) => AlertDialog(
+        title: Text(message),
+        actions: [
+          TextButton(
+            child: const Text('OK'),
+            onPressed: () => Navigator.of(context).pop(),
           ),
+        ],
+      ),
     );
   }
 }

form_app/lib/src/validation.dart

@@ -38,19 +38,18 @@ class _FormValidationDemoState extends State<FormValidationDemo> {
 
                 showDialog<void>(
                   context: context,
-                  builder:
-                      (context) => AlertDialog(
-                        title: const Text('Your story'),
-                        content: Text('The $adjective developer saw a $noun'),
-                        actions: [
-                          TextButton(
-                            child: const Text('Done'),
-                            onPressed: () {
-                              Navigator.of(context).pop();
-                            },
-                          ),
-                        ],
+                  builder: (context) => AlertDialog(
+                    title: const Text('Your story'),
+                    content: Text('The $adjective developer saw a $noun'),
+                    actions: [
+                      TextButton(
+                        child: const Text('Done'),
+                        onPressed: () {
+                          Navigator.of(context).pop();
+                        },
                       ),
+                    ],
+                  ),
                 );
               },
             ),
@@ -138,18 +137,21 @@ class _FormValidationDemoState extends State<FormValidationDemo> {
                             ),
                             Text(
                               'I agree to the terms of service.',
-                              style: Theme.of(context).textTheme.titleMedium,
+                              style: Theme.of(
+                                context,
+                              ).textTheme.titleMedium,
                             ),
                           ],
                         ),
                         if (!formFieldState.isValid)
                           Text(
                             formFieldState.errorText ?? "",
-                            style: Theme.of(
-                              context,
-                            ).textTheme.bodySmall!.copyWith(
-                              color: Theme.of(context).colorScheme.error,
-                            ),
+                            style: Theme.of(context).textTheme.bodySmall!
+                                .copyWith(
+                                  color: Theme.of(
+                                    context,
+                                  ).colorScheme.error,
+                                ),
                           ),
                       ],
                     );

form_app/pubspec.yaml

@@ -2,9 +2,10 @@ name: form_app
 description: A sample demonstrating different types of forms and best practices
 publish_to: "none"
 version: 1.0.0+1
+resolution: workspace
 
 environment:
-  sdk: ^3.7.0-0
+  sdk: ^3.9.0-0
 
 dependencies:
   flutter:
@@ -18,7 +19,7 @@ dependencies:
     git:
       url: https://github.com/google/flutter-desktop-embedding.git
       path: plugins/window_size
-  go_router: ^16.1.0
+  go_router: ^16.0.0
 
 dev_dependencies:
   analysis_defaults:

form_app/test/form_app_test.dart

@@ -22,7 +22,11 @@ void main() {
   });
 }
 
-Future<void> _signIn(WidgetTester tester, String email, String password) async {
+Future<void> _signIn(
+  WidgetTester tester,
+  String email,
+  String password,
+) async {
   await tester.pumpWidget(
     MaterialApp(home: SignInHttpDemo(httpClient: mockClient)),
   );