feat: register local agent project workspaces

SovereignAI-Starter/flutter_app/test/chat_cubit_test.dart

@@ -17,6 +17,8 @@ class _VersionTestApi extends ApiRepository {
   String? indexedWorkspace;
   List<String> indexedFiles = const [];
   List<String> deletedFiles = const [];
+  String? registeredProject;
+  String? unregisteredProject;
 
   @override
   Future<String> getModelName() async => 'gemma4:e2b';
@@ -62,6 +64,17 @@ class _VersionTestApi extends ApiRepository {
     'README.md',
   ];
 
+  @override
+  Future<List<String>> registerWorkspaceProject(String workspacePath) async {
+    registeredProject = workspacePath;
+    return listWorkspaceFiles(workspacePath);
+  }
+
+  @override
+  Future<void> unregisterWorkspaceProject(String workspacePath) async {
+    unregisteredProject = workspacePath;
+  }
+
   @override
   Future<Map<String, dynamic>> indexWorkspaceKnowledge(
     String workspacePath,
@@ -180,30 +193,50 @@ void main() {
     await cubit.close();
   });
 
-  test('registered project folders persist and can be removed from the list', () async {
-    final settings = _MemorySettingsStore();
-    final firstApi = _VersionTestApi();
-    final first = ChatCubit(firstApi, settingsStore: settings);
+  test(
+    'registered project folders persist and can be removed from the list',
+    () async {
+      final settings = _MemorySettingsStore();
+      final firstApi = _VersionTestApi();
+      final first = ChatCubit(firstApi, settingsStore: settings);
+      await Future<void>.delayed(Duration.zero);
+
+      await first.selectWorkspace(r'C:\Projects\sovereign-ai');
+      expect(firstApi.registeredProject, r'C:\Projects\sovereign-ai');
+      expect(first.state.savedWorkspacePaths, [r'C:\Projects\sovereign-ai']);
+      expect(settings.values['saved_workspace_paths'], [
+        r'C:\Projects\sovereign-ai',
+      ]);
+      await first.close();
+
+      final restoredApi = _VersionTestApi();
+      final restored = ChatCubit(restoredApi, settingsStore: settings);
+      await Future<void>.delayed(Duration.zero);
+      expect(restored.state.savedWorkspacePaths, [r'C:\Projects\sovereign-ai']);
+
+      await restored.removeSavedWorkspace(r'C:\Projects\sovereign-ai');
+      expect(restoredApi.unregisteredProject, r'C:\Projects\sovereign-ai');
+      expect(restored.state.savedWorkspacePaths, isEmpty);
+      expect(settings.values['saved_workspace_paths'], isEmpty);
+      await restored.close();
+    },
+  );
+
+  test('removing the active project revokes its chat context', () async {
+    final api = _VersionTestApi();
+    final cubit = ChatCubit(api, settingsStore: LocalSettingsStore.inMemory());
     await Future<void>.delayed(Duration.zero);
+    const project = r'C:\Projects\active-project';
 
-    await first.selectWorkspace(r'C:\Projects\sovereign-ai');
-    expect(first.state.savedWorkspacePaths, [r'C:\Projects\sovereign-ai']);
-    expect(settings.values['saved_workspace_paths'], [
-      r'C:\Projects\sovereign-ai',
-    ]);
-    await first.close();
+    await cubit.selectWorkspace(project);
+    expect(cubit.state.isWorkspaceMode, isTrue);
+    await cubit.removeSavedWorkspace(project);
 
-    final restored = ChatCubit(
-      _VersionTestApi(),
-      settingsStore: settings,
-    );
-    await Future<void>.delayed(Duration.zero);
-    expect(restored.state.savedWorkspacePaths, [r'C:\Projects\sovereign-ai']);
-
-    await restored.removeSavedWorkspace(r'C:\Projects\sovereign-ai');
-    expect(restored.state.savedWorkspacePaths, isEmpty);
-    expect(settings.values['saved_workspace_paths'], isEmpty);
-    await restored.close();
+    expect(api.unregisteredProject, project);
+    expect(cubit.state.isWorkspaceMode, isFalse);
+    expect(cubit.state.selectedWorkspacePath, isNull);
+    expect(cubit.state.availableWorkspaceFiles, isEmpty);
+    await cubit.close();
   });
 
   test('regeneration keeps prior answers and selection is persisted', () async {

SovereignAI-Starter/flutter_app/test/widget_test.dart

@@ -50,6 +50,13 @@ class _TestApiRepository extends ApiRepository {
     'lib/main.dart',
   ];
 
+  @override
+  Future<List<String>> registerWorkspaceProject(String workspacePath) async =>
+      listWorkspaceFiles(workspacePath);
+
+  @override
+  Future<void> unregisterWorkspaceProject(String workspacePath) async {}
+
   @override
   Future<List<SavedConversation>> listConversations() async => [];
 }
@@ -97,6 +104,13 @@ class _ProposalWidgetApi extends _TestApiRepository {
     'src/hello.py',
   ];
 
+  @override
+  Future<List<String>> registerWorkspaceProject(String workspacePath) async =>
+      listWorkspaceFiles(workspacePath);
+
+  @override
+  Future<void> unregisterWorkspaceProject(String workspacePath) async {}
+
   @override
   Future<AgentRunResult> runAgent(
     String task, {