fix: resolve all flutter analyze warnings and infos

- app.dart: add braces to single-statement if body
- briefing_api.dart: escape <id> in doc comment (unintended HTML)
- notes_api.dart, tasks_api.dart, projects_api.dart: use null-aware
  map elements (?'key': value) instead of if-null guards
- task_edit_screen.dart: remove unused tasks_api.dart import
- task_edit_screen.dart, project_selector.dart: suppress
  deprecated_member_use on DropdownButtonFormField.value (value is
  the controlled-widget param; switching to initialValue would break
  current-selection display)
- project_selector.dart: use _ instead of __ for ignored error params

lib/app.dart

@@ -371,7 +371,7 @@ class _QuickCaptureBarState extends ConsumerState<_QuickCaptureBar> {
 
   String _hintForLocation(String location) {
     if (location.startsWith(Routes.library) &&
-        location.contains('tasks')) return 'Add a task…';
+        location.contains('tasks')) { return 'Add a task…'; }
     if (location.startsWith(Routes.conversations)) return 'Ask Fabled…';
     return 'Capture a note…';
   }

lib/data/api/briefing_api.dart

@@ -35,7 +35,7 @@ class BriefingApi {
     }
   }
 
-  /// GET /api/briefing/conversations/<id>/messages
+  /// GET /api/briefing/conversations/`<id>`/messages
   Future<List<Message>> getMessages(int convId) async {
     try {
       final response =

lib/data/api/notes_api.dart

@@ -38,7 +38,7 @@ class NotesApi {
         'title': title,
         'body': body,
         'tags': tags,
-        if (projectId != null) 'project_id': projectId,
+        ?'project_id': projectId,
       });
       return Note.fromJson(response.data as Map<String, dynamic>);
     } on DioException catch (e) {
@@ -59,7 +59,7 @@ class NotesApi {
         'title': title,
         'body': body,
         'tags': tags,
-        if (clearProject) 'project_id': null else if (projectId != null) 'project_id': projectId,
+        if (clearProject) 'project_id': null else ?'project_id': projectId,
       });
       return Note.fromJson(response.data as Map<String, dynamic>);
     } on DioException catch (e) {

lib/data/api/projects_api.dart

@@ -44,7 +44,7 @@ class ProjectsApi {
         if (description != null && description.isNotEmpty)
           'description': description,
         if (goal != null && goal.isNotEmpty) 'goal': goal,
-        if (color != null) 'color': color,
+        ?'color': color,
       });
       return Project.fromJson(response.data as Map<String, dynamic>);
     } on DioException catch (e) {

lib/data/api/tasks_api.dart

@@ -43,8 +43,8 @@ class TasksApi {
         'status': status.value,
         'priority': priority.value,
         'due_date': dueDate?.toIso8601String(),
-        if (projectId != null) 'project_id': projectId,
-        if (parentId != null) 'parent_id': parentId,
+        ?'project_id': projectId,
+        ?'parent_id': parentId,
       });
       return Task.fromJson(response.data as Map<String, dynamic>);
     } on DioException catch (e) {

lib/screens/tasks/task_edit_screen.dart

@@ -4,7 +4,6 @@ import 'package:go_router/go_router.dart';
 
 import '../../core/constants.dart';
 import '../../core/exceptions.dart';
-import '../../data/api/tasks_api.dart';
 import '../../data/models/task.dart';
 import '../../providers/api_client_provider.dart';
 import '../../providers/tasks_provider.dart';
@@ -239,6 +238,7 @@ class _TaskEditScreenState extends ConsumerState<TaskEditScreen> {
                           ),
                           const SizedBox(height: 16),
                           DropdownButtonFormField<TaskStatus>(
+                            // ignore: deprecated_member_use
                             value: _status,
                             decoration: const InputDecoration(
                               labelText: 'Status',
@@ -253,6 +253,7 @@ class _TaskEditScreenState extends ConsumerState<TaskEditScreen> {
                           ),
                           const SizedBox(height: 16),
                           DropdownButtonFormField<TaskPriority>(
+                            // ignore: deprecated_member_use
                             value: _priority,
                             decoration: const InputDecoration(
                               labelText: 'Priority',

lib/widgets/project_selector.dart

@@ -23,12 +23,13 @@ class ProjectSelector extends ConsumerWidget {
 
     return projectsAsync.when(
       loading: () => const LinearProgressIndicator(),
-      error: (_, __) => const SizedBox.shrink(),
+      error: (_, _) => const SizedBox.shrink(),
       data: (projects) {
         final active =
             projects.where((p) => p.status == 'active').toList();
 
         return DropdownButtonFormField<int?>(
+          // ignore: deprecated_member_use
           value: value,
           decoration: decoration ??
               const InputDecoration(