Fix dart_hooks.yaml example keys so hooks are actually enabled (#150)

dart_hooks.yaml

@@ -1,2 +1,2 @@
-agent_dart_format.dart: true
-agent_dart_analyze.dart: true
+DartFormatHook: true
+DartAnalyzeHook: true

tool/dart_hooks.yaml

@@ -1,2 +1,2 @@
-agent_dart_format.dart: true
-agent_dart_analyze.dart: true
+DartFormatHook: true
+DartAnalyzeHook: true

tool/dart_hooks/dart_hooks.yaml

@@ -1,2 +1,2 @@
-agent_dart_format.dart: true
-agent_dart_analyze.dart: true
+DartFormatHook: true
+DartAnalyzeHook: true

tool/dart_hooks/lib/src/base_hook.dart

@@ -63,8 +63,10 @@ abstract class BaseHook {
       final dynamic yaml = loadYaml(configContent);
       if (yaml is Map) {
         if (!yaml.containsKey(configKey)) {
+          final String foundKeys = yaml.keys.join(', ');
           await logToFile(
-            'Hook $hookName is disabled (key "$configKey" is missing in configuration).',
+            'Hook $hookName is disabled (key "$configKey" is missing in configuration). '
+            'Found keys: [$foundKeys]. Did you mean to enable it with "$configKey: true"?',
           );
           printStdout(jsonEncode({'decision': 'stop'}));
           onExit(0);

tool/dart_hooks/test/base_hook_test.dart

@@ -242,6 +242,10 @@ void main() {
           loggedMessages.first,
           contains('is disabled (key "test_hook" is missing in configuration)'),
         );
+        // Verify the warning surfaces the keys that were found so a typo'd or
+        // legacy key (e.g. a script filename) does not silently disable a hook.
+        expect(loggedMessages.first, contains('Found keys: [other_hook].'));
+        expect(loggedMessages.first, contains('"test_hook: true"'));
       });
 
       test('Disabled setting logs disabled', () async {

tool/dart_skills_lint/dart_hooks.yaml

@@ -1,2 +1,2 @@
-agent_dart_format.dart: true
-agent_dart_analyze.dart: true
+DartFormatHook: true
+DartAnalyzeHook: true