dock Claude's task list above the composer (T-308)

Claude's TodoWrite checklist was invisible. Add a TaskItem/TaskStatus
model + a latest-wins parser (taskListFrom) that reads the most recent
TodoWrite tool call (it replaces the whole list each time), and a compact
display-only ClaudeTaskDock pinned between the conversation and the
composer: collapsed to "N tasks · M done" + the current in-progress item,
expandable to the full checklist with per-item status glyphs + a11y
labels. Hidden when there are no tasks. Parser + widget tests.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

test/builtin/claude/claude_task_dock_test.dart

@@ -0,0 +1,72 @@
+/// Widget coverage for the docked task list (T-308): hidden when empty,
+/// collapsed summary with the current in-progress item, expand/collapse, and
+/// per-item status semantics.
+library;
+
+import 'package:clide/builtin/claude/src/claude_task_dock.dart';
+import 'package:clide/builtin/claude/src/task_list.dart';
+import 'package:clide/widgets/widgets.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import '../../helpers/kernel_fixture.dart';
+import '../../helpers/widget_harness.dart';
+
+void main() {
+  late KernelFixture f;
+  setUp(() async => f = await KernelFixture.create());
+  tearDown(() => f.dispose());
+
+  const tasks = [
+    TaskItem(text: 'wire the dock', status: TaskStatus.completed),
+    TaskItem(text: 'render the rows', status: TaskStatus.inProgress),
+    TaskItem(text: 'write the tests', status: TaskStatus.pending),
+  ];
+
+  Future<void> pump(WidgetTester tester, List<TaskItem> items) async {
+    await tester.pumpWidget(harness(
+      f,
+      Align(alignment: Alignment.topLeft, child: SizedBox(width: 400, child: ClaudeTaskDock(tasks: items))),
+    ));
+    await tester.pump();
+  }
+
+  testWidgets('renders nothing when there are no tasks', (tester) async {
+    await pump(tester, const []);
+    expect(find.byType(ClideText), findsNothing);
+    expect(tester.takeException(), isNull);
+  });
+
+  testWidgets('collapsed: a one-line summary + the current in-progress item; rows hidden', (tester) async {
+    final handle = tester.ensureSemantics();
+    await pump(tester, tasks);
+    expect(find.text('3 tasks · 1 done'), findsOneWidget);
+    expect(find.text('render the rows'), findsOneWidget); // current in-progress in the summary
+    // The other rows aren't shown while collapsed.
+    expect(find.text('wire the dock'), findsNothing);
+    expect(find.text('write the tests'), findsNothing);
+    expect(find.bySemanticsLabel('Claude task list, 3 tasks · 1 done, collapsed'), findsOneWidget);
+    handle.dispose();
+  });
+
+  testWidgets('tapping expands to the full checklist with per-item status', (tester) async {
+    final handle = tester.ensureSemantics();
+    await pump(tester, tasks);
+    await tester.tap(find.bySemanticsLabel('Claude task list, 3 tasks · 1 done, collapsed'));
+    await tester.pump();
+
+    expect(find.text('wire the dock'), findsOneWidget);
+    expect(find.text('render the rows'), findsOneWidget);
+    expect(find.text('write the tests'), findsOneWidget);
+    // Per-item status announced for AT.
+    expect(find.bySemanticsLabel('wire the dock, done'), findsOneWidget);
+    expect(find.bySemanticsLabel('render the rows, in progress'), findsOneWidget);
+    expect(find.bySemanticsLabel('write the tests, pending'), findsOneWidget);
+    handle.dispose();
+  });
+
+  testWidgets('singular task count reads "1 task"', (tester) async {
+    await pump(tester, const [TaskItem(text: 'lonely', status: TaskStatus.pending)]);
+    expect(find.text('1 task · 0 done'), findsOneWidget);
+  });
+}

test/builtin/claude/task_list_test.dart

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+/// Parser for Claude's TodoWrite task list (T-308): latest-wins, status
+/// mapping, content/activeForm fallback, and graceful handling of non-TodoWrite
+/// or malformed input.
+library;
+
+import 'package:clide/builtin/claude/src/task_list.dart';
+import 'package:clide/builtin/claude/src/transcript_reader.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+final _t = DateTime.utc(2026);
+
+AssistantToolUse _todo(Object todos, {String id = 'x'}) =>
+    AssistantToolUse(uuid: id, timestamp: _t, isSidechain: false, toolUseId: id, name: 'TodoWrite', input: {'todos': todos});
+
+void main() {
+  test('parses todos with their status', () {
+    final tasks = taskListFrom([
+      _todo([
+        {'content': 'a', 'status': 'pending'},
+        {'content': 'b', 'status': 'in_progress'},
+        {'content': 'c', 'status': 'completed'},
+      ])
+    ]);
+    expect(tasks, const [
+      TaskItem(text: 'a', status: TaskStatus.pending),
+      TaskItem(text: 'b', status: TaskStatus.inProgress),
+      TaskItem(text: 'c', status: TaskStatus.completed),
+    ]);
+  });
+
+  test('the latest TodoWrite wins — a snapshot, not an append log', () {
+    final tasks = taskListFrom([
+      _todo([
+        {'content': 'old', 'status': 'pending'}
+      ], id: '1'),
+      _todo([
+        {'content': 'new', 'status': 'in_progress'}
+      ], id: '2'),
+    ]);
+    expect(tasks, const [TaskItem(text: 'new', status: TaskStatus.inProgress)]);
+  });
+
+  test('content falls back to activeForm then empty; unknown status → pending', () {
+    final tasks = taskListFrom([
+      _todo([
+        {'activeForm': 'doing it', 'status': 'in_progress'},
+        {'status': 'weird'},
+      ])
+    ]);
+    expect(tasks[0].text, 'doing it');
+    expect(tasks[1].text, '');
+    expect(tasks[1].status, TaskStatus.pending);
+  });
+
+  test('no TodoWrite → empty', () {
+    expect(taskListFrom(const []), isEmpty);
+    expect(
+      taskListFrom([
+        AssistantToolUse(uuid: 'b', timestamp: _t, isSidechain: false, toolUseId: 'b', name: 'Bash', input: const {'command': 'ls'})
+      ]),
+      isEmpty,
+    );
+  });
+
+  test('malformed todos (not a list) → empty', () {
+    expect(taskListFrom([_todo('nope')]), isEmpty);
+  });
+}