create issues fix

issue observers

Наблюдатели задачи видят её и комментируют, но не редактируют.

- таблица issue_observer, наблюдатели — часть сущности Issue
- видимость: reporter, assignee или наблюдатель (задачи, история, SSE)
- правка/удаление задачи и вложений — только reporter/assignee (403 наблюдателю)
- observers в create/update, DELETE /issues/:id/observers/me, фильтр role
- история изменений и уведомления новым наблюдателям

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/modules/issue/application/use-cases/unobserve-issue/unobserve-issue.use-case.spec.ts

@@ -0,0 +1,75 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import type { IIssueRepository } from '../../../domain/repositories/issue.repository.interface.js';
+import { Issue } from '../../../domain/entities/issue.entity.js';
+import { IssueNotFoundException } from '../../../domain/exceptions/issue-not-found.exception.js';
+import { IssueEventsService } from '../../services/issue-events.service.js';
+import { UnobserveIssueUseCase } from './unobserve-issue.use-case.js';
+import { UnobserveIssueCommand } from './unobserve-issue.command.js';
+
+const buildIssue = () =>
+  Issue.reconstitute({
+    id: 1,
+    key: 'ISSUE-1',
+    title: 'Title',
+    content: null,
+    status: 'OPEN',
+    priority: 0,
+    type: 'TASK',
+    assignee: null,
+    reporter: 'user-1',
+    observers: ['user-5', 'user-6'],
+    projectId: 'project-1',
+    dueDate: null,
+    createdAt: new Date(),
+    updatedAt: new Date(),
+  });
+
+describe('UnobserveIssueUseCase', () => {
+  let repository: IIssueRepository;
+  let issueEventsService: IssueEventsService;
+  let useCase: UnobserveIssueUseCase;
+
+  beforeEach(() => {
+    repository = {
+      findById: vi.fn(),
+      findByCKey: vi.fn(),
+      findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
+      countByStatus: vi.fn(),
+      create: vi.fn(),
+      update: vi.fn(),
+      delete: vi.fn(),
+    };
+    issueEventsService = new IssueEventsService();
+    useCase = new UnobserveIssueUseCase(repository, issueEventsService);
+  });
+
+  it('removes the current user from observers on behalf of themselves', async () => {
+    vi.mocked(repository.findById).mockResolvedValue(buildIssue());
+    const received: unknown[] = [];
+    issueEventsService.onIssueUpdated().subscribe((issue) => received.push(issue));
+
+    await useCase.execute(new UnobserveIssueCommand(1, 'user-5'));
+
+    const [saved, actorId] = vi.mocked(repository.update).mock.calls[0]!;
+    expect(saved.observers).toEqual(['user-6']);
+    expect(actorId).toBe('user-5');
+    expect(received).toEqual([expect.objectContaining({ observerIds: ['user-6'] })]);
+  });
+
+  it('does nothing for a user who is not an observer', async () => {
+    vi.mocked(repository.findById).mockResolvedValue(buildIssue());
+
+    await useCase.execute(new UnobserveIssueCommand(1, 'user-1'));
+
+    expect(repository.update).not.toHaveBeenCalled();
+  });
+
+  it('throws when the issue is not visible', async () => {
+    vi.mocked(repository.findById).mockResolvedValue(null);
+
+    await expect(useCase.execute(new UnobserveIssueCommand(1, 'user-9'))).rejects.toBeInstanceOf(
+      IssueNotFoundException,
+    );
+  });
+});