diff --git a/Codex Documentation/Current Software Plan/UI Plan 2 - Backlog Board Implementation/UI_PLAN_2_IMPLEMENTATION_NOTES.md b/Codex Documentation/Current Software Plan/UI Plan 2 - Backlog Board Implementation/UI_PLAN_2_IMPLEMENTATION_NOTES.md
index d0cc9df..414539f 100644
--- a/Codex Documentation/Current Software Plan/UI Plan 2 - Backlog Board Implementation/UI_PLAN_2_IMPLEMENTATION_NOTES.md	
+++ b/Codex Documentation/Current Software Plan/UI Plan 2 - Backlog Board Implementation/UI_PLAN_2_IMPLEMENTATION_NOTES.md	
@@ -83,3 +83,20 @@ Freeform Tags Metadata.md` for a later migration-backed feature.
 4. Focused application-management tests cover stable empty columns, bucket and
    summary consistency, search/filter behavior, child previews, not-found detail
    responses, read-only slot suggestions, and missing-duration handling.
+
+## Block 02 Demo Seed Data
+
+1. The Flutter demo composition now seeds Backlog board data as real scheduler
+   `Task` and `ProjectProfile` records, not widget-local mock rows.
+2. The seed matches the feasible textual targets from Chunk 2.7: 24 backlog
+   tasks, project counts of Home 5 / Work 8 / Personal 5 / Learning 4 / Side
+   Project 2, priority counts of High 7 / Medium 9 / Low 8, and 12h 15m total
+   estimated time.
+3. The plan/mockup contains a count conflict: the mockup summary says 24 tasks,
+   while the listed column badge counts add to 22. The current seed keeps 24
+   repository-backed backlog tasks so the summary target stays truthful through
+   public read models.
+4. `Review Q3 budget` is seeded with Work, 60 minutes, High priority,
+   medium reward, and easy difficulty. Finance/review freeform tags, notes text,
+   and exact drawer slot copy remain deferred with the approved metadata scope
+   decision above.
diff --git a/apps/focus_flow_flutter/lib/app/demo/demo_seed_tasks.dart b/apps/focus_flow_flutter/lib/app/demo/demo_seed_tasks.dart
index 6aadc5d..85255c6 100644
--- a/apps/focus_flow_flutter/lib/app/demo/demo_seed_tasks.dart
+++ b/apps/focus_flow_flutter/lib/app/demo/demo_seed_tasks.dart
@@ -3,6 +3,30 @@
 
 part of '../demo_scheduler_composition.dart';
 
+/// Top-level helper that performs the `_demoProjects` operation for this file.
+/// Keeping the helper private makes the surrounding flow easier to read while preventing unrelated libraries from depending on implementation detail.
+List<ProjectProfile> _demoProjects() {
+  return [
+    ProjectProfile(id: 'home', name: 'Home', colorKey: 'project-home'),
+    ProjectProfile(id: 'work', name: 'Work', colorKey: 'project-work'),
+    ProjectProfile(
+      id: 'personal',
+      name: 'Personal',
+      colorKey: 'project-personal',
+    ),
+    ProjectProfile(
+      id: 'learning',
+      name: 'Learning',
+      colorKey: 'project-learning',
+    ),
+    ProjectProfile(
+      id: 'side-project',
+      name: 'Side Project',
+      colorKey: 'project-side-project',
+    ),
+  ];
+}
+
 /// Top-level helper that performs the `_todaySeedTasks` operation for this file.
 /// Keeping the helper private makes the surrounding flow easier to read while preventing unrelated libraries from depending on implementation detail.
 List<Task> _todaySeedTasks(CivilDate date, DateTime createdAt) {
@@ -123,6 +147,284 @@ List<Task> _todaySeedTasks(CivilDate date, DateTime createdAt) {
   ];
 }
 
+/// Top-level helper that performs the `_backlogSeedTasks` operation for this file.
+/// Keeping the helper private makes the surrounding flow easier to read while preventing unrelated libraries from depending on implementation detail.
+List<Task> _backlogSeedTasks(CivilDate date, DateTime createdAt) {
+  return [
+    _backlogSeedTask(
+      id: 'reply-to-3-emails',
+      title: 'Reply to 3 emails',
+      projectId: 'home',
+      order: 1,
+      priority: PriorityLevel.medium,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.easy,
+      durationMinutes: 10,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'update-project-status',
+      title: 'Update project status',
+      projectId: 'work',
+      order: 2,
+      priority: PriorityLevel.medium,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.easy,
+      durationMinutes: 15,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'schedule-dentist-appt',
+      title: 'Schedule dentist appt',
+      projectId: 'personal',
+      order: 3,
+      priority: PriorityLevel.medium,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.easy,
+      durationMinutes: 10,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'clean-up-downloads-folder',
+      title: 'Clean up downloads folder',
+      projectId: 'home',
+      order: 4,
+      priority: PriorityLevel.medium,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.easy,
+      durationMinutes: 10,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'plan-tomorrow',
+      title: 'Plan tomorrow',
+      projectId: 'work',
+      order: 5,
+      priority: PriorityLevel.medium,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.easy,
+      durationMinutes: 10,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'review-q3-budget',
+      title: 'Review Q3 budget',
+      projectId: 'work',
+      order: 6,
+      priority: PriorityLevel.high,
+      reward: RewardLevel.medium,
+      difficulty: DifficultyLevel.easy,
+      durationMinutes: 60,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'plan-next-week',
+      title: 'Plan next week',
+      projectId: 'work',
+      order: 7,
+      priority: PriorityLevel.high,
+      reward: RewardLevel.high,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 30,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'define-weekly-goals',
+      title: 'Define weekly goals',
+      projectId: 'work',
+      order: 8,
+      priority: PriorityLevel.high,
+      reward: RewardLevel.medium,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 15,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'time-block-schedule',
+      title: 'Time block schedule',
+      projectId: 'work',
+      order: 9,
+      priority: PriorityLevel.high,
+      reward: RewardLevel.medium,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 15,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'organize-kitchen-drawers',
+      title: 'Organize kitchen drawers',
+      projectId: 'home',
+      order: 10,
+      priority: PriorityLevel.low,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 45,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'renew-car-registration',
+      title: 'Renew car registration',
+      projectId: 'home',
+      order: 11,
+      priority: PriorityLevel.high,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 25,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'build-analytics-dashboard',
+      title: 'Build analytics dashboard',
+      projectId: 'work',
+      order: 12,
+      priority: PriorityLevel.high,
+      reward: RewardLevel.high,
+      difficulty: DifficultyLevel.hard,
+      durationMinutes: 120,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'write-marketing-strategy',
+      title: 'Write marketing strategy',
+      projectId: 'work',
+      order: 13,
+      priority: PriorityLevel.high,
+      reward: RewardLevel.high,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 90,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'complete-online-course',
+      title: 'Complete online course',
+      projectId: 'learning',
+      order: 14,
+      priority: PriorityLevel.medium,
+      reward: RewardLevel.high,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 90,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'module-1-foundations',
+      title: 'Module 1: Foundations',
+      projectId: 'learning',
+      order: 15,
+      priority: PriorityLevel.medium,
+      reward: RewardLevel.medium,
+      difficulty: DifficultyLevel.hard,
+      durationMinutes: 15,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'module-2-deep-dive',
+      title: 'Module 2: Deep Dive',
+      projectId: 'learning',
+      order: 16,
+      priority: PriorityLevel.low,
+      reward: RewardLevel.medium,
+      difficulty: DifficultyLevel.hard,
+      durationMinutes: 15,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'module-3-practice',
+      title: 'Module 3: Practice',
+      projectId: 'learning',
+      order: 17,
+      priority: PriorityLevel.low,
+      reward: RewardLevel.medium,
+      difficulty: DifficultyLevel.hard,
+      durationMinutes: 15,
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'learn-guitar',
+      title: 'Learn guitar',
+      projectId: 'personal',
+      order: 18,
+      priority: PriorityLevel.low,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 30,
+      backlogTags: const {BacklogTag.wishlist},
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'start-youtube-channel',
+      title: 'Start YouTube channel',
+      projectId: 'side-project',
+      order: 19,
+      priority: PriorityLevel.low,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 20,
+      backlogTags: const {BacklogTag.wishlist},
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'travel-to-japan',
+      title: 'Travel to Japan',
+      projectId: 'personal',
+      order: 20,
+      priority: PriorityLevel.medium,
+      reward: RewardLevel.medium,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 30,
+      backlogTags: const {BacklogTag.wishlist},
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'home-office-upgrade',
+      title: 'Home office upgrade',
+      projectId: 'home',
+      order: 21,
+      priority: PriorityLevel.low,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 20,
+      backlogTags: const {BacklogTag.wishlist},
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'read-2-books',
+      title: 'Read 2 books',
+      projectId: 'personal',
+      order: 22,
+      priority: PriorityLevel.low,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 15,
+      backlogTags: const {BacklogTag.wishlist},
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'sketch-app-icon-ideas',
+      title: 'Sketch app icon ideas',
+      projectId: 'side-project',
+      order: 23,
+      priority: PriorityLevel.medium,
+      reward: RewardLevel.medium,
+      difficulty: DifficultyLevel.easy,
+      durationMinutes: 15,
+      backlogTags: const {BacklogTag.wishlist},
+      createdAt: createdAt,
+    ),
+    _backlogSeedTask(
+      id: 'archive-photo-backlog',
+      title: 'Archive photo backlog',
+      projectId: 'personal',
+      order: 24,
+      priority: PriorityLevel.low,
+      reward: RewardLevel.low,
+      difficulty: DifficultyLevel.medium,
+      durationMinutes: 15,
+      backlogTags: const {BacklogTag.wishlist},
+      createdAt: createdAt,
+    ),
+  ];
+}
+
 /// Top-level helper that performs the `_seedTask` operation for this file.
 /// Keeping the helper private makes the surrounding flow easier to read while preventing unrelated libraries from depending on implementation detail.
 Task _seedTask({
@@ -161,3 +463,34 @@ Task _seedTask({
     updatedAt: completedAt ?? createdAt,
   );
 }
+
+/// Top-level helper that performs the `_backlogSeedTask` operation for this file.
+/// Keeping the helper private makes the surrounding flow easier to read while preventing unrelated libraries from depending on implementation detail.
+Task _backlogSeedTask({
+  required String id,
+  required String title,
+  required String projectId,
+  required int order,
+  required PriorityLevel priority,
+  required RewardLevel reward,
+  required DifficultyLevel difficulty,
+  required int durationMinutes,
+  required DateTime createdAt,
+  Set<BacklogTag> backlogTags = const <BacklogTag>{},
+}) {
+  final orderedCreatedAt = createdAt.add(Duration(minutes: order));
+  return Task(
+    id: id,
+    title: title,
+    projectId: projectId,
+    type: TaskType.flexible,
+    status: TaskStatus.backlog,
+    priority: priority,
+    reward: reward,
+    difficulty: difficulty,
+    durationMinutes: durationMinutes,
+    backlogTags: backlogTags,
+    createdAt: orderedCreatedAt,
+    updatedAt: orderedCreatedAt,
+  );
+}
diff --git a/apps/focus_flow_flutter/lib/app/demo_scheduler_composition.dart b/apps/focus_flow_flutter/lib/app/demo_scheduler_composition.dart
index 60a5a51..3b36dc3 100644
--- a/apps/focus_flow_flutter/lib/app/demo_scheduler_composition.dart
+++ b/apps/focus_flow_flutter/lib/app/demo_scheduler_composition.dart
@@ -91,24 +91,13 @@ class DemoSchedulerComposition implements SchedulerAppComposition {
         CivilDate.fromDateTime((clock ?? const SystemClock()).now());
     final readAt = _instant(resolvedDate, 15, 55);
     final createdAt = _instant(resolvedDate, 8);
-    final project = ProjectProfile(
-      id: projectId,
-      name: 'Home',
-      colorKey: 'project-home',
-    );
+    final projects = _demoProjects();
     final tasks = <Task>[
       if (includeTodayItems) ..._todaySeedTasks(resolvedDate, createdAt),
-      if (includeBacklogItems)
-        Task.quickCapture(
-          id: 'later-backlog-note',
-          title: 'Review reusable grocery list',
-          projectId: projectId,
-          createdAt: createdAt,
-          updatedAt: createdAt,
-        ),
+      if (includeBacklogItems) ..._backlogSeedTasks(resolvedDate, createdAt),
     ];
     final store = InMemoryApplicationUnitOfWork(
-      initialProjects: [project],
+      initialProjects: projects,
       initialOwnerSettings: [
         OwnerSettings(
           ownerId: ownerId,
@@ -191,6 +180,22 @@ class DemoSchedulerComposition implements SchedulerAppComposition {
     );
   }
 
+  /// Creates a generic read controller for the Backlog board.
+  UiReadController<BacklogBoardQueryResult> createBacklogBoardController() {
+    return ApplicationReadController<BacklogBoardQueryResult>(
+      read: () {
+        return managementUseCases.getBacklogBoard(
+          GetBacklogBoardRequest(
+            context: context('ui-read-backlog-board'),
+            localDate: date,
+            sortKey: BacklogSortKey.age,
+          ),
+        );
+      },
+      isEmpty: (state) => state.summary.totalTaskCount == 0,
+    );
+  }
+
   /// Creates the command controller used by interactive scheduler controls.
   @override
   SchedulerCommandController createCommandController({
diff --git a/apps/focus_flow_flutter/test/app/demo_backlog_seed_test.dart b/apps/focus_flow_flutter/test/app/demo_backlog_seed_test.dart
new file mode 100644
index 0000000..fe57096
--- /dev/null
+++ b/apps/focus_flow_flutter/test/app/demo_backlog_seed_test.dart
@@ -0,0 +1,107 @@
+// SPDX-FileCopyrightText: 2026 FocusFlow contributors
+// SPDX-License-Identifier: AGPL-3.0-only
+
+/// Tests Demo Backlog Seed behavior in the FocusFlow Flutter app.
+library;
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:scheduler_core/scheduler_core.dart';
+
+import 'package:focus_flow_flutter/app/demo_scheduler_composition.dart';
+
+/// Runs demo Backlog seed tests.
+void main() {
+  test('seeded backlog board exposes mockup-scale domain data', () async {
+    final composition = DemoSchedulerComposition.seeded(
+      selectedDate: CivilDate(2025, 5, 20),
+    );
+    addTearDown(composition.dispose);
+
+    final board = (await composition.managementUseCases.getBacklogBoard(
+      GetBacklogBoardRequest(
+        context: composition.context('demo-backlog-board'),
+        localDate: composition.date,
+        sortKey: BacklogSortKey.age,
+      ),
+    )).requireValue;
+    final items = board.columns.expand((column) => column.items).toList();
+
+    expect(board.summary.totalTaskCount, 24);
+    expect(board.summary.totalEstimatedMinutes, 735);
+    expect(_distributionCounts(board.summary.projectDistribution), {
+      'Home': 5,
+      'Learning': 4,
+      'Personal': 5,
+      'Side Project': 2,
+      'Work': 8,
+    });
+    expect(_distributionCounts(board.summary.priorityDistribution), {
+      'High': 7,
+      'Medium': 9,
+      'Low': 8,
+    });
+    expect(items.map((item) => item.title), containsAll(_visibleSeedTitles));
+
+    final review = items.singleWhere(
+      (item) => item.title == 'Review Q3 budget',
+    );
+    expect(review.projectName, 'Work');
+    expect(review.durationMinutes, 60);
+    expect(review.priority, PriorityLevel.high);
+    expect(review.reward, RewardLevel.medium);
+    expect(review.difficulty, DifficultyLevel.easy);
+  });
+
+  test('seeded review detail stays within deferred metadata scope', () async {
+    final composition = DemoSchedulerComposition.seeded(
+      selectedDate: CivilDate(2025, 5, 20),
+    );
+    addTearDown(composition.dispose);
+
+    final detail = (await composition.managementUseCases.getBacklogTaskDetail(
+      GetBacklogTaskDetailRequest(
+        context: composition.context('demo-review-detail'),
+        localDate: composition.date,
+        taskId: 'review-q3-budget',
+      ),
+    )).requireValue;
+
+    expect(detail.item.title, 'Review Q3 budget');
+    expect(detail.notes, isNull);
+    expect(detail.tags, isEmpty);
+    expect(detail.suggestedSlots, isNotEmpty);
+  });
+}
+
+/// Visible task titles from the Backlog board mockup that must be present in the seed.
+const _visibleSeedTitles = <String>[
+  'Reply to 3 emails',
+  'Update project status',
+  'Schedule dentist appt',
+  'Clean up downloads folder',
+  'Plan tomorrow',
+  'Review Q3 budget',
+  'Plan next week',
+  'Define weekly goals',
+  'Time block schedule',
+  'Organize kitchen drawers',
+  'Build analytics dashboard',
+  'Write marketing strategy',
+  'Complete online course',
+  'Module 1: Foundations',
+  'Module 2: Deep Dive',
+  'Module 3: Practice',
+  'Learn guitar',
+  'Start YouTube channel',
+  'Travel to Japan',
+  'Home office upgrade',
+  'Read 2 books',
+];
+
+/// Top-level helper that performs the `_distributionCounts` operation for this file.
+/// Keeping the helper private makes the surrounding flow easier to read while preventing unrelated libraries from depending on implementation detail.
+Map<String, int> _distributionCounts(
+  BacklogDistributionReadModel distribution,
+) {
+  return {for (final entry in distribution.entries) entry.label: entry.count};
+}