Initial scaffold: FocusFlow ADHD Task Manager Flutter app

BLoC/Cubit state management, ADHD-friendly theme (calming teal, no red),
GetIt DI, GoRouter navigation. Screens: task dashboard, focus mode,
task create/detail, streaks, time perception, settings, onboarding, auth.
Custom widgets: TaskCard, RewardPopup, StreakRing, GentleNudgeCard.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/features/body_doubling/presentation/screens/rooms_screen.dart

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+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+import '../../../../core/theme/app_colors.dart';
+
+/// Placeholder screen for the body doubling / virtual coworking rooms feature.
+class RoomsScreen extends StatelessWidget {
+  const RoomsScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return Scaffold(
+      appBar: AppBar(
+        leading: IconButton(
+          icon: const Icon(Icons.arrow_back_rounded),
+          onPressed: () => context.go('/'),
+        ),
+        title: const Text('Body Doubling'),
+      ),
+      body: Center(
+        child: Padding(
+          padding: const EdgeInsets.all(32),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Icon(Icons.groups_rounded, size: 80, color: AppColors.tertiary.withAlpha(180)),
+              const SizedBox(height: 24),
+              Text(
+                'Body Doubling',
+                style: theme.textTheme.headlineMedium?.copyWith(
+                  fontWeight: FontWeight.w700,
+                ),
+                textAlign: TextAlign.center,
+              ),
+              const SizedBox(height: 8),
+              Text(
+                'Coming Soon',
+                style: theme.textTheme.titleLarge?.copyWith(
+                  color: AppColors.tertiary,
+                  fontWeight: FontWeight.w600,
+                ),
+              ),
+              const SizedBox(height: 20),
+              Text(
+                'Body doubling is a technique where having another person nearby '
+                'helps you stay focused. Soon you\'ll be able to join virtual '
+                'coworking rooms, work alongside others in real-time, and pick '
+                'ambient sounds like a caf\u00e9 or rain.',
+                style: theme.textTheme.bodyLarge,
+                textAlign: TextAlign.center,
+              ),
+              const SizedBox(height: 28),
+              OutlinedButton.icon(
+                onPressed: () {
+                  ScaffoldMessenger.of(context).showSnackBar(
+                    const SnackBar(
+                      content: Text('We\'ll notify you when body doubling rooms launch!'),
+                    ),
+                  );
+                },
+                icon: const Icon(Icons.notifications_active_outlined),
+                label: const Text('Notify me'),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}