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/update-issue/update-issue.use-case.ts

@@ -1,15 +1,13 @@
 import { Inject, Injectable } from '@nestjs/common';
 import { ISSUE_REPOSITORY, type IIssueRepository } from '../../../domain/repositories/issue.repository.interface.js';
-import {
-  PROJECT_REPOSITORY,
-  type IProjectRepository,
-} from '../../../../project/domain/repositories/project.repository.interface.js';
 import { IssueNotFoundException } from '../../../domain/exceptions/issue-not-found.exception.js';
+import { IssueEditForbiddenException } from '../../../domain/exceptions/issue-edit-forbidden.exception.js';
 import { UpdateIssueCommand } from './update-issue.command.js';
 import { IssueWithUsersDto } from '../../dto/issue-with-users.dto.js';
 import { IssueEventsService } from '../../services/issue-events.service.js';
 import { IssueUserExpanderService } from '../../services/issue-user-expander.service.js';
 import { IssueAssignmentNotifierService } from '../../services/issue-assignment-notifier.service.js';
+import { IssueParticipantsService } from '../../services/issue-participants.service.js';
 import { IssueUpdatedEvent } from '../../../domain/events/issue-updated.event.js';
 
 @Injectable()
@@ -17,11 +15,10 @@ export class UpdateIssueUseCase {
   constructor(
     @Inject(ISSUE_REPOSITORY)
     private readonly issueRepository: IIssueRepository,
-    @Inject(PROJECT_REPOSITORY)
-    private readonly projectRepository: IProjectRepository,
     private readonly issueEventsService: IssueEventsService,
     private readonly issueUserExpander: IssueUserExpanderService,
     private readonly issueAssignmentNotifier: IssueAssignmentNotifierService,
+    private readonly issueParticipants: IssueParticipantsService,
   ) {}
 
   async execute(command: UpdateIssueCommand): Promise<IssueWithUsersDto> {
@@ -31,6 +28,12 @@ export class UpdateIssueUseCase {
       throw new IssueNotFoundException(command.id);
     }
 
+    if (!issue.canBeEditedBy(command.userId)) {
+      throw new IssueEditForbiddenException(command.id);
+    }
+
+    const observersBefore = [...issue.observers];
+
     if (command.title !== undefined) {
       issue.updateTitle(command.title);
     }
@@ -63,12 +66,16 @@ export class UpdateIssueUseCase {
       issue.updateDueDate(command.dueDate);
     }
 
+    // После assignee: новый исполнитель отбрасывается из наблюдателей
+    if (command.observers !== undefined) {
+      issue.setObservers(command.observers);
+    }
+
+    await this.issueParticipants.ensureObserversExist(issue.observers.filter((id) => !observersBefore.includes(id)));
     await this.issueRepository.update(issue, command.userId);
     const dto = await this.issueUserExpander.expand(issue);
 
-    if (issue.assignee) {
-      await this.projectRepository.addMember(issue.projectId, issue.assignee);
-    }
+    await this.issueParticipants.addToProject(issue);
 
     const domainEvents = issue.pullDomainEvents();
     this.issueAssignmentNotifier.notify(issue, domainEvents);