feat(v2.4): 切换计划与开发任务主写

2026-07-08 12:34:33 +08:00
parent 5f5a211c99
commit 1bf630a7bc
21 changed files with 1612 additions and 28 deletions
--- a/apps/server/src/app.module.ts
+++ b/apps/server/src/app.module.ts
@@ -6,6 +6,8 @@ import { ProductModule } from './modules/product/product.module';
 import { ProjectModule } from './modules/project/project.module';
 import { RequirementModule } from './modules/requirement/requirement.module';
 import { VersionModule } from './modules/version/version.module';
+import { VersionPlanModule } from './modules/version-plan/version-plan.module';
+import { DevTaskModule } from './modules/dev-task/dev-task.module';
 import { AiModule } from './modules/ai/ai.module';
 import { ConfigModule } from './modules/config/config.module';
 import { DataModule } from './modules/data/data.module';
@@ -19,6 +21,8 @@ import { HealthModule } from './modules/health/health.module';
    ProductModule,
    ProjectModule,
    VersionModule,
+    VersionPlanModule,
+    DevTaskModule,
    RequirementModule,
    ConfigModule,
    DataModule,
--- a/apps/server/src/modules/dev-task/dev-task.controller.ts
+++ b/apps/server/src/modules/dev-task/dev-task.controller.ts
@@ -0,0 +1,57 @@
+import { Body, Controller, Delete, Get, Param, Patch, Post } from '@nestjs/common';
+import { CreateDevTaskDto } from './dto/create-dev-task.dto';
+import { UpdateDevTaskDto } from './dto/update-dev-task.dto';
+import { DevTaskService } from './dev-task.service';
+
+@Controller('versions/:versionId/dev-tasks')
+export class DevTaskController {
+  constructor(private readonly devTaskService: DevTaskService) {}
+
+  @Post()
+  create(@Param('versionId') versionId: string, @Body() dto: CreateDevTaskDto) {
+    return this.devTaskService.create(versionId, dto);
+  }
+
+  @Get()
+  findAll(@Param('versionId') versionId: string) {
+    return this.devTaskService.findAll(versionId);
+  }
+
+  @Patch(':id')
+  update(@Param('versionId') versionId: string, @Param('id') id: string, @Body() dto: UpdateDevTaskDto) {
+    return this.devTaskService.update(versionId, id, dto);
+  }
+
+  @Patch(':id/status')
+  updateStatus(
+    @Param('versionId') versionId: string,
+    @Param('id') id: string,
+    @Body('status') status: string,
+  ) {
+    return this.devTaskService.updateStatus(versionId, id, status);
+  }
+
+  @Patch(':id/block')
+  setBlocked(
+    @Param('versionId') versionId: string,
+    @Param('id') id: string,
+    @Body('blocked') blocked: boolean,
+    @Body('reason') reason?: string,
+  ) {
+    return this.devTaskService.setBlocked(versionId, id, blocked, reason);
+  }
+
+  @Patch(':id/transfer')
+  transfer(
+    @Param('versionId') versionId: string,
+    @Param('id') id: string,
+    @Body('assigneeId') assigneeId: string,
+  ) {
+    return this.devTaskService.transfer(versionId, id, assigneeId);
+  }
+
+  @Delete(':id')
+  remove(@Param('versionId') versionId: string, @Param('id') id: string) {
+    return this.devTaskService.remove(versionId, id);
+  }
+}
--- a/apps/server/src/modules/dev-task/dev-task.module.ts
+++ b/apps/server/src/modules/dev-task/dev-task.module.ts
@@ -0,0 +1,12 @@
+import { Module } from '@nestjs/common';
+import { WorkActivityModule } from '../work-activity/work-activity.module';
+import { DevTaskController } from './dev-task.controller';
+import { DevTaskService } from './dev-task.service';
+
+@Module({
+  imports: [WorkActivityModule],
+  controllers: [DevTaskController],
+  providers: [DevTaskService],
+  exports: [DevTaskService],
+})
+export class DevTaskModule {}
--- a/apps/server/src/modules/dev-task/dev-task.service.spec.ts
+++ b/apps/server/src/modules/dev-task/dev-task.service.spec.ts
@@ -0,0 +1,153 @@
+import { NotFoundException } from '@nestjs/common';
+import { DevTaskService } from './dev-task.service';
+
+describe('DevTaskService domain writes', () => {
+  const makeService = () => {
+    const workActivity = {
+      record: jest.fn().mockResolvedValue({ id: 'activity-1' }),
+    };
+    const prisma = {
+      version: {
+        findUnique: jest.fn(),
+      },
+      devTask: {
+        create: jest.fn(),
+        delete: jest.fn(),
+        findFirst: jest.fn(),
+        findMany: jest.fn(),
+        update: jest.fn(),
+      },
+    };
+
+    return {
+      prisma,
+      workActivity,
+      service: new DevTaskService(prisma as any, workActivity as any),
+    };
+  };
+
+  it('creates dev tasks directly under a version partition', async () => {
+    const { prisma, workActivity, service } = makeService();
+    prisma.version.findUnique.mockResolvedValue({ id: 'version-1', productId: 'product-1', projectId: 'project-1' });
+    prisma.devTask.create.mockResolvedValue({ id: 'task-1', versionId: 'version-1', title: '开发登录' });
+
+    await service.create('version-1', {
+      requirementId: 'req-1',
+      requirementProductId: 'product-1',
+      taskNo: 'DEV-001',
+      title: '开发登录',
+      categoryId: 'cat-fe',
+      assigneeId: 'member-1',
+      priority: 'P1',
+      expectedStartAt: '2026-07-08T09:00:00.000Z',
+      expectedEndAt: '2026-07-08T18:00:00.000Z',
+      estimateHours: 8,
+      references: [{ type: 'requirement', id: 'REQ-001', label: 'REQ-001 登录' }],
+      createdBy: 'member-pm',
+    } as any);
+
+    expect(prisma.devTask.create).toHaveBeenCalledWith({
+      data: expect.objectContaining({
+        versionId: 'version-1',
+        productId: 'product-1',
+        projectId: 'project-1',
+        requirementId: 'req-1',
+        requirementProductId: 'product-1',
+        code: 'DEV-001',
+        title: '开发登录',
+        categoryId: 'cat-fe',
+        assigneeId: 'member-1',
+        priority: 1,
+        expectedStartAt: new Date('2026-07-08T09:00:00.000Z'),
+        expectedEndAt: new Date('2026-07-08T18:00:00.000Z'),
+        estimateHours: 8,
+      }),
+    });
+    expect(workActivity.record).toHaveBeenCalledWith(expect.objectContaining({
+      versionId: 'version-1',
+      sourceType: 'dev_task',
+      sourceId: 'task-1',
+      action: 'dev_task_created',
+    }));
+  });
+
+  it('changes status by id plus version id and records activity evidence', async () => {
+    const { prisma, workActivity, service } = makeService();
+    prisma.devTask.findFirst.mockResolvedValue({
+      id: 'task-1',
+      versionId: 'version-1',
+      productId: 'product-1',
+      projectId: 'project-1',
+      status: 'todo',
+      title: '开发登录',
+      assigneeId: 'member-1',
+    });
+    prisma.devTask.update.mockResolvedValue({
+      id: 'task-1',
+      versionId: 'version-1',
+      productId: 'product-1',
+      projectId: 'project-1',
+      status: 'in_progress',
+      title: '开发登录',
+      assigneeId: 'member-1',
+    });
+
+    await service.updateStatus('version-1', 'task-1', 'in_progress');
+
+    expect(prisma.devTask.update).toHaveBeenCalledWith({
+      where: { id_versionId: { id: 'task-1', versionId: 'version-1' } },
+      data: expect.objectContaining({
+        status: 'in_progress',
+        startDate: expect.any(Date),
+      }),
+    });
+    expect(workActivity.record).toHaveBeenCalledWith(expect.objectContaining({
+      versionId: 'version-1',
+      sourceType: 'dev_task',
+      sourceId: 'task-1',
+      action: 'dev_task_started',
+    }));
+  });
+
+  it('blocks and unblocks tasks inside the version partition', async () => {
+    const { prisma, workActivity, service } = makeService();
+    prisma.devTask.findFirst.mockResolvedValue({
+      id: 'task-1',
+      versionId: 'version-1',
+      productId: 'product-1',
+      projectId: 'project-1',
+      status: 'in_progress',
+      title: '开发登录',
+      assigneeId: 'member-1',
+    });
+    prisma.devTask.update.mockResolvedValue({
+      id: 'task-1',
+      versionId: 'version-1',
+      productId: 'product-1',
+      projectId: 'project-1',
+      isBlocked: true,
+      blockReason: '接口未就绪',
+      title: '开发登录',
+      assigneeId: 'member-1',
+    });
+
+    await service.setBlocked('version-1', 'task-1', true, '接口未就绪');
+
+    expect(prisma.devTask.update).toHaveBeenCalledWith({
+      where: { id_versionId: { id: 'task-1', versionId: 'version-1' } },
+      data: { isBlocked: true, blockReason: '接口未就绪' },
+    });
+    expect(workActivity.record).toHaveBeenCalledWith(expect.objectContaining({
+      action: 'dev_task_blocked',
+      metadata: expect.objectContaining({ blocker: '接口未就绪' }),
+    }));
+  });
+
+  it('rejects updates outside the version partition', async () => {
+    const { prisma, service } = makeService();
+    prisma.devTask.findFirst.mockResolvedValue(null);
+
+    await expect(service.update('version-1', 'missing-task', { title: 'Ghost' })).rejects.toBeInstanceOf(NotFoundException);
+    expect(prisma.devTask.update).not.toHaveBeenCalled();
+  });
+});
--- a/apps/server/src/modules/dev-task/dev-task.service.ts
+++ b/apps/server/src/modules/dev-task/dev-task.service.ts
@@ -0,0 +1,205 @@
+import { BadRequestException, Injectable, NotFoundException } from '@nestjs/common';
+import type { Prisma } from '@prisma/client';
+import { PrismaService } from '../../prisma/prisma.service';
+import { WorkActivityService } from '../work-activity/work-activity.service';
+import { CreateDevTaskDto } from './dto/create-dev-task.dto';
+import { UpdateDevTaskDto } from './dto/update-dev-task.dto';
+
+@Injectable()
+export class DevTaskService {
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly workActivity: WorkActivityService,
+  ) {}
+
+  async create(versionId: string, dto: CreateDevTaskDto) {
+    const version = await this.ensureVersion(versionId);
+    if (!version.projectId) {
+      throw new BadRequestException('开发任务所属版本必须归属于项目');
+    }
+    const item = await this.prisma.devTask.create({
+      data: {
+        ...this.toTaskData(dto),
+        versionId,
+        productId: version.productId,
+        projectId: version.projectId,
+        code: dto.code?.trim() || dto.taskNo?.trim() || createFallbackDevCode(),
+        title: dto.title,
+        status: dto.status ?? 'todo',
+        isBlocked: dto.isBlocked ?? false,
+      },
+    });
+    const activity = await this.recordTaskActivity(item, 'dev_task_created', 'creation', `新建开发任务：${item.title}`);
+    return { item, activities: [activity] };
+  }
+
+  findAll(versionId: string) {
+    return this.prisma.devTask.findMany({
+      where: { versionId },
+      orderBy: [{ status: 'asc' }, { updatedAt: 'desc' }],
+    });
+  }
+
+  async update(versionId: string, id: string, dto: UpdateDevTaskDto) {
+    await this.ensureTaskInVersion(versionId, id);
+    const item = await this.prisma.devTask.update({
+      where: { id_versionId: { id, versionId } },
+      data: this.toTaskData(dto),
+    });
+    return { item, activities: [] };
+  }
+
+  async updateStatus(versionId: string, id: string, status: string) {
+    const current = await this.ensureTaskInVersion(versionId, id);
+    const data: Record<string, unknown> = { status };
+    if (status === 'in_progress' && !current.startDate) data.startDate = new Date();
+    if (status === 'submitted' && !current.completedAt) data.completedAt = new Date();
+    const item = await this.prisma.devTask.update({
+      where: { id_versionId: { id, versionId } },
+      data,
+    });
+    const activity = await this.recordStatusActivity(item, current.status, status);
+    return { item, activities: activity ? [activity] : [] };
+  }
+
+  async setBlocked(versionId: string, id: string, blocked: boolean, reason?: string) {
+    await this.ensureTaskInVersion(versionId, id);
+    const item = await this.prisma.devTask.update({
+      where: { id_versionId: { id, versionId } },
+      data: {
+        isBlocked: blocked,
+        blockReason: blocked ? reason : null,
+      },
+    });
+    const activity = await this.recordTaskActivity(
+      item,
+      blocked ? 'dev_task_blocked' : 'dev_task_unblocked',
+      blocked ? 'risk' : 'progress',
+      blocked ? `标记阻塞：${reason?.trim() || item.title}` : `解除阻塞：${item.title}`,
+      { blocker: blocked ? reason : undefined },
+    );
+    return { item, activities: [activity] };
+  }
+
+  async transfer(versionId: string, id: string, assigneeId: string) {
+    const current = await this.ensureTaskInVersion(versionId, id);
+    const item = await this.prisma.devTask.update({
+      where: { id_versionId: { id, versionId } },
+      data: { assigneeId },
+    });
+    const activity = await this.recordTaskActivity(
+      item,
+      'dev_task_transferred',
+      'progress',
+      `转派开发任务：${item.title}`,
+      { fromAssigneeId: current.assigneeId, toAssigneeId: assigneeId },
+    );
+    return { item, activities: [activity] };
+  }
+
+  async remove(versionId: string, id: string) {
+    await this.ensureTaskInVersion(versionId, id);
+    return this.prisma.devTask.delete({ where: { id_versionId: { id, versionId } } });
+  }
+
+  private toTaskData(dto: Partial<CreateDevTaskDto>) {
+    return {
+      ...(dto.requirementId !== undefined && { requirementId: emptyToNull(dto.requirementId) }),
+      ...(dto.requirementProductId !== undefined && { requirementProductId: emptyToNull(dto.requirementProductId) }),
+      ...(dto.categoryId !== undefined && { categoryId: emptyToNull(dto.categoryId) }),
+      ...(dto.code !== undefined || dto.taskNo !== undefined ? { code: dto.code?.trim() || dto.taskNo?.trim() } : {}),
+      ...(dto.title !== undefined && { title: dto.title }),
+      ...(dto.description !== undefined && { description: dto.description ?? '' }),
+      ...(dto.status !== undefined && { status: dto.status }),
+      ...(dto.priority !== undefined && { priority: parsePriority(dto.priority) ?? 0 }),
+      ...(dto.assigneeId !== undefined && { assigneeId: emptyToNull(dto.assigneeId) }),
+      ...(dto.creatorId !== undefined || dto.createdBy !== undefined ? { creatorId: emptyToNull(dto.creatorId ?? dto.createdBy) } : {}),
+      ...(dto.isBlocked !== undefined && { isBlocked: dto.isBlocked }),
+      ...(dto.blockReason !== undefined && { blockReason: emptyToNull(dto.blockReason) }),
+      ...(dto.expectedStartAt !== undefined && { expectedStartAt: parseOptionalDate(dto.expectedStartAt) }),
+      ...(dto.expectedEndAt !== undefined && { expectedEndAt: parseOptionalDate(dto.expectedEndAt) }),
+      ...(dto.actualStartAt !== undefined || dto.startDate !== undefined
+        ? { startDate: parseOptionalDate(dto.actualStartAt ?? dto.startDate) }
+        : {}),
+      ...(dto.actualEndAt !== undefined || dto.completedAt !== undefined
+        ? { completedAt: parseOptionalDate(dto.actualEndAt ?? dto.completedAt) }
+        : {}),
+      ...(dto.estimateHours !== undefined && { estimateHours: dto.estimateHours }),
+      ...(dto.aiEstimateHours !== undefined && { aiEstimateHours: dto.aiEstimateHours }),
+      ...(dto.references !== undefined && { references: toJsonInput(dto.references) }),
+      ...(dto.aiDraft !== undefined && { aiDraft: dto.aiDraft }),
+      ...(dto.aiDraftAt !== undefined && { aiDraftAt: parseOptionalDate(dto.aiDraftAt) }),
+    };
+  }
+
+  private async ensureVersion(versionId: string) {
+    const version = await this.prisma.version.findUnique({ where: { id: versionId } });
+    if (!version) throw new NotFoundException('版本不存在');
+    return version;
+  }
+
+  private async ensureTaskInVersion(versionId: string, id: string) {
+    const task = await this.prisma.devTask.findFirst({ where: { id, versionId } });
+    if (!task) throw new NotFoundException('开发任务不存在');
+    return task;
+  }
+
+  private recordStatusActivity(task: any, fromStatus: string, toStatus: string) {
+    if (toStatus === 'in_progress') {
+      return this.recordTaskActivity(task, 'dev_task_started', 'progress', `开始开发：${task.title}`, { fromStatus, toStatus });
+    }
+    if (toStatus === 'testing') {
+      return this.recordTaskActivity(task, 'dev_task_self_testing', 'progress', `进入自测：${task.title}`, { fromStatus, toStatus });
+    }
+    if (toStatus === 'submitted') {
+      return this.recordTaskActivity(task, 'dev_task_submitted', 'delivery', `已提测开发任务：${task.title}`, { fromStatus, toStatus });
+    }
+    return undefined;
+  }
+
+  private recordTaskActivity(task: any, action: string, category: string, summary: string, metadata: Record<string, unknown> = {}) {
+    return this.workActivity.record({
+      versionId: task.versionId,
+      productId: task.productId,
+      projectId: task.projectId,
+      actorId: task.assigneeId ?? task.creatorId,
+      sourceType: 'dev_task',
+      sourceId: task.id,
+      action,
+      category,
+      title: task.title,
+      summary,
+      metadata,
+    });
+  }
+}
+
+function createFallbackDevCode() {
+  return `DEV-${Date.now().toString(36).toUpperCase()}`;
+}
+
+function emptyToNull(value: string | null | undefined): string | null {
+  if (value === null) return null;
+  if (value === undefined) return null;
+  const trimmed = value.trim();
+  return trimmed ? trimmed : null;
+}
+
+function parseOptionalDate(value: string | null | undefined): Date | null {
+  if (!value) return null;
+  const date = new Date(value);
+  return Number.isFinite(date.getTime()) ? date : null;
+}
+
+function parsePriority(value: string | number | null | undefined): number | undefined {
+  if (value === null || value === undefined || value === '') return undefined;
+  if (typeof value === 'number') return Number.isFinite(value) ? Math.max(0, Math.min(4, Math.floor(value))) : undefined;
+  const match = /^P([0-4])$/i.exec(value.trim());
+  if (match) return Number(match[1]);
+  const parsed = Number(value);
+  return Number.isFinite(parsed) ? Math.max(0, Math.min(4, Math.floor(parsed))) : undefined;
+}
+
+function toJsonInput(value: unknown): Prisma.InputJsonValue {
+  return value as Prisma.InputJsonValue;
+}
--- a/apps/server/src/modules/dev-task/dto/create-dev-task.dto.ts
+++ b/apps/server/src/modules/dev-task/dto/create-dev-task.dto.ts
@@ -0,0 +1,99 @@
+import { IsArray, IsBoolean, IsOptional, IsString } from 'class-validator';
+
+export class CreateDevTaskDto {
+  @IsString()
+  @IsOptional()
+  requirementId?: string;
+
+  @IsString()
+  @IsOptional()
+  requirementProductId?: string;
+
+  @IsString()
+  @IsOptional()
+  categoryId?: string;
+
+  @IsString()
+  @IsOptional()
+  code?: string;
+
+  @IsString()
+  @IsOptional()
+  taskNo?: string;
+
+  @IsString()
+  title!: string;
+
+  @IsString()
+  @IsOptional()
+  description?: string;
+
+  @IsString()
+  @IsOptional()
+  status?: string;
+
+  @IsOptional()
+  priority?: string | number;
+
+  @IsString()
+  @IsOptional()
+  assigneeId?: string;
+
+  @IsString()
+  @IsOptional()
+  creatorId?: string;
+
+  @IsString()
+  @IsOptional()
+  createdBy?: string;
+
+  @IsBoolean()
+  @IsOptional()
+  isBlocked?: boolean;
+
+  @IsString()
+  @IsOptional()
+  blockReason?: string;
+
+  @IsString()
+  @IsOptional()
+  expectedStartAt?: string;
+
+  @IsString()
+  @IsOptional()
+  expectedEndAt?: string;
+
+  @IsString()
+  @IsOptional()
+  actualStartAt?: string;
+
+  @IsString()
+  @IsOptional()
+  actualEndAt?: string;
+
+  @IsString()
+  @IsOptional()
+  startDate?: string;
+
+  @IsString()
+  @IsOptional()
+  completedAt?: string;
+
+  @IsOptional()
+  estimateHours?: number;
+
+  @IsOptional()
+  aiEstimateHours?: number;
+
+  @IsArray()
+  @IsOptional()
+  references?: unknown[];
+
+  @IsBoolean()
+  @IsOptional()
+  aiDraft?: boolean;
+
+  @IsString()
+  @IsOptional()
+  aiDraftAt?: string;
+}
--- a/apps/server/src/modules/dev-task/dto/update-dev-task.dto.ts
+++ b/apps/server/src/modules/dev-task/dto/update-dev-task.dto.ts
@@ -0,0 +1,4 @@
+import { PartialType } from '@nestjs/mapped-types';
+import { CreateDevTaskDto } from './create-dev-task.dto';
+
+export class UpdateDevTaskDto extends PartialType(CreateDevTaskDto) {}
--- a/apps/server/src/modules/version-plan/dto/create-version-plan.dto.ts
+++ b/apps/server/src/modules/version-plan/dto/create-version-plan.dto.ts
@@ -0,0 +1,59 @@
+import { IsArray, IsIn, IsOptional, IsString } from 'class-validator';
+
+export class CreateVersionPlanDto {
+  @IsIn(['research', 'product', 'ui'])
+  type!: 'research' | 'product' | 'ui';
+
+  @IsString()
+  title!: string;
+
+  @IsString()
+  @IsOptional()
+  status?: string;
+
+  @IsString()
+  @IsOptional()
+  owner?: string;
+
+  @IsString()
+  @IsOptional()
+  ownerId?: string;
+
+  @IsString()
+  @IsOptional()
+  startTime?: string;
+
+  @IsString()
+  @IsOptional()
+  endTime?: string;
+
+  @IsString()
+  @IsOptional()
+  expectedStartAt?: string;
+
+  @IsString()
+  @IsOptional()
+  expectedEndAt?: string;
+
+  @IsString()
+  @IsOptional()
+  actualStartAt?: string;
+
+  @IsString()
+  @IsOptional()
+  completedAt?: string;
+
+  @IsString()
+  @IsOptional()
+  resultUrl?: string;
+
+  @IsArray()
+  @IsOptional()
+  linkedRequirementIds?: string[];
+
+  @IsOptional()
+  requirementCoverage?: unknown[];
+
+  @IsOptional()
+  logs?: unknown[];
+}
--- a/apps/server/src/modules/version-plan/dto/update-version-plan.dto.ts
+++ b/apps/server/src/modules/version-plan/dto/update-version-plan.dto.ts
@@ -0,0 +1,4 @@
+import { PartialType } from '@nestjs/mapped-types';
+import { CreateVersionPlanDto } from './create-version-plan.dto';
+
+export class UpdateVersionPlanDto extends PartialType(CreateVersionPlanDto) {}
--- a/apps/server/src/modules/version-plan/version-plan.controller.ts
+++ b/apps/server/src/modules/version-plan/version-plan.controller.ts
@@ -0,0 +1,34 @@
+import { Body, Controller, Delete, Get, Param, Patch, Post } from '@nestjs/common';
+import { CreateVersionPlanDto } from './dto/create-version-plan.dto';
+import { UpdateVersionPlanDto } from './dto/update-version-plan.dto';
+import { VersionPlanService } from './version-plan.service';
+
+@Controller('versions/:versionId/plans')
+export class VersionPlanController {
+  constructor(private readonly versionPlanService: VersionPlanService) {}
+
+  @Post()
+  create(@Param('versionId') versionId: string, @Body() dto: CreateVersionPlanDto) {
+    return this.versionPlanService.create(versionId, dto);
+  }
+
+  @Get()
+  findAll(@Param('versionId') versionId: string) {
+    return this.versionPlanService.findAll(versionId);
+  }
+
+  @Patch(':id')
+  update(@Param('versionId') versionId: string, @Param('id') id: string, @Body() dto: UpdateVersionPlanDto) {
+    return this.versionPlanService.update(versionId, id, dto);
+  }
+
+  @Patch(':id/complete')
+  complete(@Param('versionId') versionId: string, @Param('id') id: string, @Body() dto: UpdateVersionPlanDto) {
+    return this.versionPlanService.complete(versionId, id, dto);
+  }
+
+  @Delete(':id')
+  remove(@Param('versionId') versionId: string, @Param('id') id: string) {
+    return this.versionPlanService.remove(versionId, id);
+  }
+}
--- a/apps/server/src/modules/version-plan/version-plan.module.ts
+++ b/apps/server/src/modules/version-plan/version-plan.module.ts
@@ -0,0 +1,12 @@
+import { Module } from '@nestjs/common';
+import { WorkActivityModule } from '../work-activity/work-activity.module';
+import { VersionPlanController } from './version-plan.controller';
+import { VersionPlanService } from './version-plan.service';
+
+@Module({
+  imports: [WorkActivityModule],
+  controllers: [VersionPlanController],
+  providers: [VersionPlanService],
+  exports: [VersionPlanService],
+})
+export class VersionPlanModule {}
--- a/apps/server/src/modules/version-plan/version-plan.service.spec.ts
+++ b/apps/server/src/modules/version-plan/version-plan.service.spec.ts
@@ -0,0 +1,109 @@
+import { NotFoundException } from '@nestjs/common';
+import { VersionPlanService } from './version-plan.service';
+
+describe('VersionPlanService domain writes', () => {
+  const makeService = () => {
+    const workActivity = {
+      record: jest.fn().mockResolvedValue({ id: 'activity-1' }),
+    };
+    const prisma = {
+      version: {
+        findUnique: jest.fn(),
+      },
+      versionPlan: {
+        create: jest.fn(),
+        delete: jest.fn(),
+        findFirst: jest.fn(),
+        findMany: jest.fn(),
+        update: jest.fn(),
+      },
+    };
+
+    return {
+      prisma,
+      workActivity,
+      service: new VersionPlanService(prisma as any, workActivity as any),
+    };
+  };
+
+  it('creates version plans directly under a version partition', async () => {
+    const { prisma, workActivity, service } = makeService();
+    prisma.version.findUnique.mockResolvedValue({ id: 'version-1', productId: 'product-1', projectId: 'project-1' });
+    prisma.versionPlan.create.mockResolvedValue({ id: 'plan-1', versionId: 'version-1', title: '产品方案' });
+
+    await service.create('version-1', {
+      type: 'product',
+      title: '产品方案',
+      owner: 'member-1',
+      startTime: '2026-07-08T09:00:00.000Z',
+      endTime: '2026-07-08T18:00:00.000Z',
+      linkedRequirementIds: ['req-1'],
+    } as any);
+
+    expect(prisma.versionPlan.create).toHaveBeenCalledWith({
+      data: expect.objectContaining({
+        versionId: 'version-1',
+        productId: 'product-1',
+        projectId: 'project-1',
+        type: 'product',
+        title: '产品方案',
+        ownerId: 'member-1',
+        expectedStartAt: new Date('2026-07-08T09:00:00.000Z'),
+        expectedEndAt: new Date('2026-07-08T18:00:00.000Z'),
+        requirementCoverage: [{ requirementId: 'req-1', status: 'not_started' }],
+      }),
+    });
+    expect(workActivity.record).toHaveBeenCalledWith(expect.objectContaining({
+      versionId: 'version-1',
+      sourceType: 'version_plan',
+      sourceId: 'plan-1',
+      action: 'version_plan_created',
+    }));
+  });
+
+  it('updates plan status inside version scope and records activity evidence', async () => {
+    const { prisma, workActivity, service } = makeService();
+    prisma.versionPlan.findFirst.mockResolvedValue({
+      id: 'plan-1',
+      versionId: 'version-1',
+      productId: 'product-1',
+      projectId: 'project-1',
+      status: 'pending',
+      title: '产品方案',
+      ownerId: 'member-1',
+    });
+    prisma.versionPlan.update.mockResolvedValue({
+      id: 'plan-1',
+      versionId: 'version-1',
+      productId: 'product-1',
+      projectId: 'project-1',
+      status: 'in_progress',
+      title: '产品方案',
+      ownerId: 'member-1',
+    });
+
+    await service.update('version-1', 'plan-1', { status: 'in_progress' });
+
+    expect(prisma.versionPlan.update).toHaveBeenCalledWith({
+      where: { id: 'plan-1' },
+      data: expect.objectContaining({
+        status: 'in_progress',
+        actualStartAt: expect.any(Date),
+      }),
+    });
+    expect(workActivity.record).toHaveBeenCalledWith(expect.objectContaining({
+      versionId: 'version-1',
+      sourceType: 'version_plan',
+      sourceId: 'plan-1',
+      action: 'version_plan_started',
+    }));
+  });
+
+  it('rejects plan updates outside the version partition', async () => {
+    const { prisma, service } = makeService();
+    prisma.versionPlan.findFirst.mockResolvedValue(null);
+
+    await expect(service.update('version-1', 'missing-plan', { title: 'Ghost' })).rejects.toBeInstanceOf(NotFoundException);
+    expect(prisma.versionPlan.update).not.toHaveBeenCalled();
+  });
+});
--- a/apps/server/src/modules/version-plan/version-plan.service.ts
+++ b/apps/server/src/modules/version-plan/version-plan.service.ts
@@ -0,0 +1,152 @@
+import { Injectable, NotFoundException } from '@nestjs/common';
+import type { Prisma } from '@prisma/client';
+import { PrismaService } from '../../prisma/prisma.service';
+import { WorkActivityService } from '../work-activity/work-activity.service';
+import { CreateVersionPlanDto } from './dto/create-version-plan.dto';
+import { UpdateVersionPlanDto } from './dto/update-version-plan.dto';
+
+@Injectable()
+export class VersionPlanService {
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly workActivity: WorkActivityService,
+  ) {}
+
+  async create(versionId: string, dto: CreateVersionPlanDto) {
+    const version = await this.ensureVersion(versionId);
+    const item = await this.prisma.versionPlan.create({
+      data: {
+        ...this.toPlanData(dto),
+        versionId,
+        productId: version.productId,
+        projectId: version.projectId,
+        type: dto.type,
+        title: dto.title,
+        status: dto.status ?? 'pending',
+      },
+    });
+    const activity = await this.recordPlanActivity(item, 'version_plan_created', 'creation', `新建计划：${item.title}`);
+    return { item, activities: [activity] };
+  }
+
+  findAll(versionId: string) {
+    return this.prisma.versionPlan.findMany({
+      where: { versionId },
+      orderBy: [{ type: 'asc' }, { createdAt: 'desc' }],
+    });
+  }
+
+  async update(versionId: string, id: string, dto: UpdateVersionPlanDto) {
+    const current = await this.ensurePlanInVersion(versionId, id);
+    const data = this.toPlanData(dto);
+    if (dto.status === 'in_progress' && !current.actualStartAt) {
+      data.actualStartAt = new Date();
+    }
+    if (dto.status === 'completed' && !current.completedAt) {
+      data.completedAt = new Date();
+    }
+    const item = await this.prisma.versionPlan.update({
+      where: { id },
+      data,
+    });
+    const activity = current.status !== item.status ? await this.recordStatusActivity(item, current.status, item.status) : undefined;
+    return { item, activities: activity ? [activity] : [] };
+  }
+
+  async complete(versionId: string, id: string, dto: UpdateVersionPlanDto) {
+    return this.update(versionId, id, {
+      ...dto,
+      status: 'completed',
+      completedAt: dto.completedAt ?? new Date().toISOString(),
+    });
+  }
+
+  async remove(versionId: string, id: string) {
+    await this.ensurePlanInVersion(versionId, id);
+    return this.prisma.versionPlan.delete({ where: { id } });
+  }
+
+  private toPlanData(dto: Partial<CreateVersionPlanDto>) {
+    return {
+      ...(dto.type !== undefined && { type: dto.type }),
+      ...(dto.title !== undefined && { title: dto.title }),
+      ...(dto.status !== undefined && { status: dto.status }),
+      ...(dto.owner !== undefined || dto.ownerId !== undefined ? { ownerId: emptyToNull(dto.ownerId ?? dto.owner) } : {}),
+      ...(dto.startTime !== undefined || dto.expectedStartAt !== undefined
+        ? { expectedStartAt: parseOptionalDate(dto.expectedStartAt ?? dto.startTime) }
+        : {}),
+      ...(dto.endTime !== undefined || dto.expectedEndAt !== undefined
+        ? { expectedEndAt: parseOptionalDate(dto.expectedEndAt ?? dto.endTime) }
+        : {}),
+      ...(dto.actualStartAt !== undefined && { actualStartAt: parseOptionalDate(dto.actualStartAt) }),
+      ...(dto.completedAt !== undefined && { completedAt: parseOptionalDate(dto.completedAt) }),
+      ...(dto.resultUrl !== undefined && { resultUrl: emptyToNull(dto.resultUrl) }),
+      ...(dto.requirementCoverage !== undefined || dto.linkedRequirementIds !== undefined
+        ? { requirementCoverage: toJsonInput(dto.requirementCoverage ?? buildRequirementCoverage(dto.linkedRequirementIds)) }
+        : {}),
+      ...(dto.logs !== undefined && { logs: toJsonInput(dto.logs) }),
+    };
+  }
+
+  private async ensureVersion(versionId: string) {
+    const version = await this.prisma.version.findUnique({ where: { id: versionId } });
+    if (!version) throw new NotFoundException('版本不存在');
+    return version;
+  }
+
+  private async ensurePlanInVersion(versionId: string, id: string) {
+    const plan = await this.prisma.versionPlan.findFirst({ where: { id, versionId } });
+    if (!plan) throw new NotFoundException('计划不存在');
+    return plan;
+  }
+
+  private recordStatusActivity(plan: any, fromStatus: string, toStatus: string) {
+    if (toStatus === 'in_progress') {
+      return this.recordPlanActivity(plan, 'version_plan_started', 'progress', `开始计划：${plan.title}`, { fromStatus, toStatus });
+    }
+    if (toStatus === 'completed') {
+      return this.recordPlanActivity(plan, 'version_plan_completed', 'delivery', `完成计划：${plan.title}`, { fromStatus, toStatus });
+    }
+    return undefined;
+  }
+
+  private recordPlanActivity(plan: any, action: string, category: string, summary: string, metadata: Record<string, unknown> = {}) {
+    return this.workActivity.record({
+      versionId: plan.versionId,
+      productId: plan.productId,
+      projectId: plan.projectId,
+      actorId: plan.ownerId,
+      sourceType: 'version_plan',
+      sourceId: plan.id,
+      action,
+      category,
+      title: plan.title,
+      summary,
+      metadata,
+    });
+  }
+}
+
+function buildRequirementCoverage(requirementIds: string[] | undefined) {
+  return (requirementIds ?? []).map((requirementId) => ({
+    requirementId,
+    status: 'not_started',
+  }));
+}
+
+function emptyToNull(value: string | null | undefined): string | null {
+  if (value === null) return null;
+  if (value === undefined) return null;
+  const trimmed = value.trim();
+  return trimmed ? trimmed : null;
+}
+
+function parseOptionalDate(value: string | null | undefined): Date | null {
+  if (!value) return null;
+  const date = new Date(value);
+  return Number.isFinite(date.getTime()) ? date : null;
+}
+
+function toJsonInput(value: unknown): Prisma.InputJsonValue {
+  return value as Prisma.InputJsonValue;
+}
--- a/apps/server/src/modules/work-activity/work-activity.module.ts
+++ b/apps/server/src/modules/work-activity/work-activity.module.ts
@@ -0,0 +1,8 @@
+import { Module } from '@nestjs/common';
+import { WorkActivityService } from './work-activity.service';
+
+@Module({
+  providers: [WorkActivityService],
+  exports: [WorkActivityService],
+})
+export class WorkActivityModule {}
--- a/apps/server/src/modules/work-activity/work-activity.service.spec.ts
+++ b/apps/server/src/modules/work-activity/work-activity.service.spec.ts
@@ -0,0 +1,63 @@
+import { WorkActivityService } from './work-activity.service';
+
+describe('WorkActivityService relational evidence', () => {
+  const makeService = () => {
+    const prisma = {
+      workActivity: {
+        create: jest.fn().mockResolvedValue({ id: 'activity-1' }),
+      },
+      xiaobaoRiskSummary: {
+        upsert: jest.fn().mockResolvedValue({}),
+      },
+    };
+
+    return {
+      prisma,
+      service: new WorkActivityService(prisma as any),
+    };
+  };
+
+  it('records activity rows and marks the affected version summary dirty', async () => {
+    const { prisma, service } = makeService();
+
+    await service.record({
+      versionId: 'version-1',
+      productId: 'product-1',
+      projectId: 'project-1',
+      actorId: 'member-1',
+      sourceType: 'dev_task',
+      sourceId: 'task-1',
+      action: 'dev_task_started',
+      title: '开发登录',
+      category: 'progress',
+      summary: '开始开发：开发登录',
+      metadata: { fromStatus: 'todo', toStatus: 'in_progress' },
+    });
+
+    expect(prisma.workActivity.create).toHaveBeenCalledWith({
+      data: expect.objectContaining({
+        versionId: 'version-1',
+        productId: 'product-1',
+        projectId: 'project-1',
+        actorId: 'member-1',
+        sourceType: 'dev_task',
+        sourceId: 'task-1',
+        sourceVersionId: 'version-1',
+        action: 'dev_task_started',
+        title: '开发登录',
+        metadata: expect.objectContaining({
+          category: 'progress',
+          summary: '开始开发：开发登录',
+          fromStatus: 'todo',
+          toStatus: 'in_progress',
+        }),
+      }),
+    });
+    expect(prisma.xiaobaoRiskSummary.upsert).toHaveBeenCalledWith(
+      expect.objectContaining({
+        where: { versionId: 'version-1' },
+        update: { dirty: true },
+      }),
+    );
+  });
+});
--- a/apps/server/src/modules/work-activity/work-activity.service.ts
+++ b/apps/server/src/modules/work-activity/work-activity.service.ts
@@ -0,0 +1,87 @@
+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../../prisma/prisma.service';
+
+export interface WorkActivityRecordInput {
+  versionId?: string | null;
+  productId?: string | null;
+  projectId?: string | null;
+  actorId?: string | null;
+  actorName?: string | null;
+  sourceType: string;
+  sourceId: string;
+  sourceVersionId?: string | null;
+  action: string;
+  title: string;
+  category?: string;
+  summary?: string;
+  metadata?: Record<string, unknown>;
+  occurredAt?: string | Date | null;
+}
+
+@Injectable()
+export class WorkActivityService {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async record(input: WorkActivityRecordInput) {
+    const versionId = input.versionId ?? input.sourceVersionId ?? null;
+    const metadata = {
+      ...(input.metadata ?? {}),
+      ...(input.category ? { category: input.category } : {}),
+      ...(input.summary ? { summary: input.summary } : {}),
+    };
+
+    const activity = await this.prisma.workActivity.create({
+      data: {
+        versionId,
+        productId: input.productId ?? null,
+        projectId: input.projectId ?? null,
+        actorId: input.actorId ?? null,
+        actorName: input.actorName ?? '',
+        sourceType: input.sourceType,
+        sourceId: input.sourceId,
+        sourceVersionId: input.sourceVersionId ?? versionId,
+        action: input.action,
+        title: input.title,
+        metadata,
+        occurredAt: parseDate(input.occurredAt) ?? new Date(),
+      },
+    });
+
+    if (versionId) {
+      await this.markXiaobaoSummaryDirty(versionId);
+    }
+
+    return activity;
+  }
+
+  async markXiaobaoSummaryDirty(versionId: string) {
+    const riskSignature = `dirty:${versionId}`;
+    await this.prisma.xiaobaoRiskSummary.upsert({
+      where: { versionId },
+      update: { dirty: true },
+      create: {
+        versionId,
+        riskLevel: 'attention',
+        riskScore: 1,
+        confidence: 0,
+        riskSignature,
+        summary: {
+          versionId,
+          riskLevel: 'attention',
+          riskScore: 1,
+          confidence: 0,
+          riskSignature,
+          dirty: true,
+        },
+        dirty: true,
+      },
+    });
+  }
+}
+
+function parseDate(value: string | Date | null | undefined): Date | undefined {
+  if (!value) return undefined;
+  if (value instanceof Date) return value;
+  const date = new Date(value);
+  return Number.isFinite(date.getTime()) ? date : undefined;
+}
--- a/apps/web/lib/domain-api.ts
+++ b/apps/web/lib/domain-api.ts
@@ -1,6 +1,9 @@
 import { api } from './api';
+import type { DevTask, DevTaskStatus, Reference } from './dev-task';
 import type { Priority } from './derive';
 import type { Requirement, RequirementStatus, SourceType } from './requirement';
+import type { VersionPlan, VersionPlanLog, VersionPlanRequirementCoverage } from './version-plan';
+import type { WorkActivity, WorkActivityCategory, WorkActivitySourceType } from './work-activity';

 export interface RootProject {
  id: string;
@@ -147,6 +150,157 @@ export async function deleteRequirementByProductId(productId: string, requiremen
  await api.delete(`/products/${productId}/requirements/${requirementId}`);
 }

+interface DomainVersionPlanRow {
+  id: string;
+  versionId: string;
+  type: string;
+  title: string;
+  status?: string | null;
+  ownerId?: string | null;
+  expectedStartAt?: string | Date | null;
+  expectedEndAt?: string | Date | null;
+  actualStartAt?: string | Date | null;
+  completedAt?: string | Date | null;
+  resultUrl?: string | null;
+  requirementCoverage?: unknown;
+  logs?: unknown;
+  createdAt?: string | Date | null;
+}
+
+interface DomainDevTaskRow {
+  id: string;
+  versionId: string;
+  requirementId?: string | null;
+  categoryId?: string | null;
+  code: string;
+  title: string;
+  description?: string | null;
+  status?: string | null;
+  priority?: string | number | null;
+  assigneeId?: string | null;
+  creatorId?: string | null;
+  isBlocked?: boolean | null;
+  blockReason?: string | null;
+  expectedStartAt?: string | Date | null;
+  expectedEndAt?: string | Date | null;
+  startDate?: string | Date | null;
+  completedAt?: string | Date | null;
+  estimateHours?: number | null;
+  aiEstimateHours?: number | null;
+  references?: unknown;
+  aiDraft?: boolean | null;
+  aiDraftAt?: string | Date | null;
+  createdAt?: string | Date | null;
+  updatedAt?: string | Date | null;
+}
+
+interface DomainWorkActivityRow {
+  id: string;
+  actorId?: string | null;
+  actorName?: string | null;
+  sourceType: string;
+  sourceId: string;
+  action: string;
+  title: string;
+  metadata?: unknown;
+  occurredAt?: string | Date | null;
+}
+
+interface DomainMutationResponse<T> {
+  item: T;
+  activities?: DomainWorkActivityRow[];
+}
+
+export async function listVersionPlansByVersionId(versionId: string): Promise<VersionPlan[]> {
+  const rows = await api.get<DomainVersionPlanRow[]>(`/versions/${versionId}/plans`);
+  return rows.map(normalizeVersionPlan);
+}
+
+export async function createVersionPlanByVersionId(
+  versionId: string,
+  data: Partial<VersionPlan>,
+) {
+  return normalizeMutation(
+    await api.post<DomainMutationResponse<DomainVersionPlanRow>>(`/versions/${versionId}/plans`, toVersionPlanPayload(data)),
+    normalizeVersionPlan,
+  );
+}
+
+export async function updateVersionPlanByVersionId(
+  versionId: string,
+  planId: string,
+  data: Partial<VersionPlan>,
+) {
+  return normalizeMutation(
+    await api.patch<DomainMutationResponse<DomainVersionPlanRow>>(`/versions/${versionId}/plans/${planId}`, toVersionPlanPayload(data)),
+    normalizeVersionPlan,
+  );
+}
+
+export async function completeVersionPlanByVersionId(
+  versionId: string,
+  planId: string,
+  data: Partial<VersionPlan>,
+) {
+  return normalizeMutation(
+    await api.patch<DomainMutationResponse<DomainVersionPlanRow>>(`/versions/${versionId}/plans/${planId}/complete`, toVersionPlanPayload(data)),
+    normalizeVersionPlan,
+  );
+}
+
+export async function deleteVersionPlanByVersionId(versionId: string, planId: string): Promise<void> {
+  await api.delete(`/versions/${versionId}/plans/${planId}`);
+}
+
+export async function listDevTasksByVersionId(versionId: string): Promise<DevTask[]> {
+  const rows = await api.get<DomainDevTaskRow[]>(`/versions/${versionId}/dev-tasks`);
+  return rows.map(normalizeDevTask);
+}
+
+export async function createDevTaskByVersionId(versionId: string, data: Partial<DevTask>) {
+  return normalizeMutation(
+    await api.post<DomainMutationResponse<DomainDevTaskRow>>(`/versions/${versionId}/dev-tasks`, toDevTaskPayload(data)),
+    normalizeDevTask,
+  );
+}
+
+export async function updateDevTaskByVersionId(versionId: string, taskId: string, data: Partial<DevTask>) {
+  return normalizeMutation(
+    await api.patch<DomainMutationResponse<DomainDevTaskRow>>(`/versions/${versionId}/dev-tasks/${taskId}`, toDevTaskPayload(data)),
+    normalizeDevTask,
+  );
+}
+
+export async function updateDevTaskStatusByVersionId(versionId: string, taskId: string, status: DevTaskStatus) {
+  return normalizeMutation(
+    await api.patch<DomainMutationResponse<DomainDevTaskRow>>(`/versions/${versionId}/dev-tasks/${taskId}/status`, { status }),
+    normalizeDevTask,
+  );
+}
+
+export async function setDevTaskBlockedByVersionId(
+  versionId: string,
+  taskId: string,
+  blocked: boolean,
+  reason?: string,
+) {
+  return normalizeMutation(
+    await api.patch<DomainMutationResponse<DomainDevTaskRow>>(`/versions/${versionId}/dev-tasks/${taskId}/block`, { blocked, reason }),
+    normalizeDevTask,
+  );
+}
+
+export async function transferDevTaskByVersionId(versionId: string, taskId: string, assigneeId: string) {
+  return normalizeMutation(
+    await api.patch<DomainMutationResponse<DomainDevTaskRow>>(`/versions/${versionId}/dev-tasks/${taskId}/transfer`, { assigneeId }),
+    normalizeDevTask,
+  );
+}
+
+export async function deleteDevTaskByVersionId(versionId: string, taskId: string): Promise<void> {
+  await api.delete(`/versions/${versionId}/dev-tasks/${taskId}`);
+}
+
 function normalizeProductRoot(product: RootProduct): RootProduct {
  return {
    ...product,
@@ -237,3 +391,164 @@ function isoString(value: string | Date | null | undefined): string {
  const time = new Date(value).getTime();
  return Number.isFinite(time) ? new Date(time).toISOString() : new Date().toISOString();
 }
+
+function optionalIso(value: string | Date | null | undefined): string | undefined {
+  if (!value) return undefined;
+  return isoString(value);
+}
+
+function toVersionPlanPayload(data: Partial<VersionPlan>) {
+  return {
+    ...(data.type !== undefined && { type: data.type }),
+    ...(data.title !== undefined && { title: data.title }),
+    ...(data.status !== undefined && { status: data.status }),
+    ...(data.owner !== undefined && { owner: data.owner }),
+    ...(data.startTime !== undefined && { startTime: data.startTime }),
+    ...(data.endTime !== undefined && { endTime: data.endTime }),
+    ...(data.actualStartAt !== undefined && { actualStartAt: data.actualStartAt }),
+    ...(data.completedAt !== undefined && { completedAt: data.completedAt }),
+    ...(data.resultUrl !== undefined && { resultUrl: data.resultUrl }),
+    ...(data.linkedRequirementIds !== undefined && { linkedRequirementIds: data.linkedRequirementIds }),
+    ...(data.requirementCoverage !== undefined && { requirementCoverage: data.requirementCoverage }),
+    ...(data.logs !== undefined && { logs: data.logs }),
+  };
+}
+
+function normalizeVersionPlan(row: DomainVersionPlanRow): VersionPlan {
+  const requirementCoverage = asArray<VersionPlanRequirementCoverage>(row.requirementCoverage);
+  return {
+    id: row.id,
+    versionId: row.versionId,
+    type: toPlanType(row.type),
+    title: row.title,
+    owner: row.ownerId ?? '',
+    startTime: isoString(row.expectedStartAt),
+    endTime: isoString(row.expectedEndAt),
+    status: toPlanStatus(row.status),
+    tasks: [],
+    completedRequirementIds: requirementCoverage
+      .filter((item) => item?.status === 'completed')
+      .map((item) => item.requirementId)
+      .filter(Boolean),
+    linkedRequirementIds: requirementCoverage.map((item) => item?.requirementId).filter(Boolean),
+    requirementCoverage,
+    logs: asArray<VersionPlanLog>(row.logs),
+    resultUrl: row.resultUrl ?? undefined,
+    actualStartAt: optionalIso(row.actualStartAt),
+    createdAt: isoString(row.createdAt),
+    completedAt: optionalIso(row.completedAt),
+    addedBy: row.ownerId ?? '',
+  };
+}
+
+function toPlanType(value: string): VersionPlan['type'] {
+  return value === 'research' || value === 'ui' ? value : 'product';
+}
+
+function toPlanStatus(value: string | null | undefined): VersionPlan['status'] {
+  return value === 'in_progress' || value === 'completed' ? value : 'pending';
+}
+
+function toDevTaskPayload(data: Partial<DevTask>) {
+  return {
+    ...(data.versionId !== undefined && { versionId: data.versionId }),
+    ...(data.requirementId !== undefined && { requirementId: data.requirementId }),
+    ...(data.categoryId !== undefined && { categoryId: data.categoryId }),
+    ...(data.taskNo !== undefined && { taskNo: data.taskNo }),
+    ...(data.title !== undefined && { title: data.title }),
+    ...(data.description !== undefined && { description: data.description }),
+    ...(data.status !== undefined && { status: data.status }),
+    ...(data.priority !== undefined && { priority: priorityToNumber(data.priority) }),
+    ...(data.assigneeId !== undefined && { assigneeId: data.assigneeId }),
+    ...(data.createdBy !== undefined && { createdBy: data.createdBy }),
+    ...(data.isBlocked !== undefined && { isBlocked: data.isBlocked }),
+    ...(data.blockReason !== undefined && { blockReason: data.blockReason }),
+    ...(data.expectedStartAt !== undefined && { expectedStartAt: data.expectedStartAt }),
+    ...(data.expectedEndAt !== undefined && { expectedEndAt: data.expectedEndAt }),
+    ...(data.actualStartAt !== undefined && { actualStartAt: data.actualStartAt }),
+    ...(data.actualEndAt !== undefined && { actualEndAt: data.actualEndAt }),
+    ...(data.estimateHours !== undefined && { estimateHours: data.estimateHours }),
+    ...(data.aiEstimateHours !== undefined && { aiEstimateHours: data.aiEstimateHours }),
+    ...(data.references !== undefined && { references: data.references }),
+    ...(data.aiDraft !== undefined && { aiDraft: data.aiDraft }),
+    ...(data.aiDraftAt !== undefined && { aiDraftAt: data.aiDraftAt }),
+  };
+}
+
+function normalizeDevTask(row: DomainDevTaskRow): DevTask {
+  return {
+    id: row.id,
+    taskNo: row.code,
+    versionId: row.versionId,
+    requirementId: row.requirementId ?? '',
+    title: row.title,
+    description: row.description ?? '',
+    categoryId: row.categoryId ?? '',
+    assigneeId: row.assigneeId ?? '',
+    priority: toPriority(row.priority),
+    expectedStartAt: isoString(row.expectedStartAt),
+    expectedEndAt: isoString(row.expectedEndAt),
+    estimateHours: row.estimateHours ?? undefined,
+    aiEstimateHours: row.aiEstimateHours ?? undefined,
+    actualStartAt: optionalIso(row.startDate),
+    actualEndAt: optionalIso(row.completedAt),
+    status: toDevTaskStatus(row.status),
+    isBlocked: Boolean(row.isBlocked),
+    blockReason: row.blockReason ?? undefined,
+    references: asArray<Reference>(row.references),
+    aiDraft: Boolean(row.aiDraft),
+    aiDraftAt: optionalIso(row.aiDraftAt),
+    createdBy: row.creatorId ?? '',
+    createdAt: isoString(row.createdAt),
+    updatedAt: isoString(row.updatedAt),
+  };
+}
+
+function toDevTaskStatus(value: string | null | undefined): DevTaskStatus {
+  return value === 'in_progress' || value === 'testing' || value === 'submitted' ? value : 'todo';
+}
+
+function normalizeMutation<Row, Item>(
+  response: DomainMutationResponse<Row>,
+  mapper: (row: Row) => Item,
+): { item: Item; activities: WorkActivity[] } {
+  return {
+    item: mapper(response.item),
+    activities: (response.activities ?? []).map(normalizeWorkActivity),
+  };
+}
+
+function normalizeWorkActivity(row: DomainWorkActivityRow): WorkActivity {
+  const metadata = isRecord(row.metadata) ? row.metadata : {};
+  return {
+    id: row.id,
+    actorId: row.actorId ?? row.actorName ?? '',
+    date: isoString(row.occurredAt).slice(0, 10),
+    occurredAt: isoString(row.occurredAt),
+    sourceType: toWorkActivitySourceType(row.sourceType),
+    sourceId: row.sourceId,
+    action: row.action as WorkActivity['action'],
+    category: toWorkActivityCategory(metadata.category),
+    title: row.title,
+    summary: typeof metadata.summary === 'string' ? metadata.summary : row.title,
+    metadata,
+  };
+}
+
+function toWorkActivitySourceType(value: string): WorkActivitySourceType {
+  if (value === 'version_plan' || value === 'dev_task' || value === 'test_case' || value === 'bug') return value;
+  return 'manual';
+}
+
+function toWorkActivityCategory(value: unknown): WorkActivityCategory {
+  if (value === 'delivery' || value === 'progress' || value === 'creation' || value === 'risk') return value;
+  return 'note';
+}
+
+function asArray<T>(value: unknown): T[] {
+  return Array.isArray(value) ? value as T[] : [];
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === 'object' && value !== null && !Array.isArray(value);
+}
--- a/apps/web/lib/version-plan-dev-task-domain-source.test.ts
+++ b/apps/web/lib/version-plan-dev-task-domain-source.test.ts
@@ -0,0 +1,52 @@
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { join } from 'node:path';
+import test from 'node:test';
+
+const planStore = () => readFileSync(join(process.cwd(), 'stores/useVersionPlanStore.ts'), 'utf8');
+const taskStore = () => readFileSync(join(process.cwd(), 'stores/useDevTaskStore.ts'), 'utf8');
+
+function storeMethodBody(text: string, name: string) {
+  const implementationStart = text.indexOf('export const');
+  assert.notEqual(implementationStart, -1, 'missing store implementation');
+  const start = text.indexOf(`  ${name}:`, implementationStart);
+  assert.notEqual(start, -1, `missing store method ${name}`);
+
+  let depth = 0;
+  let sawFirstBrace = false;
+  for (let i = start; i < text.length; i += 1) {
+    const char = text[i];
+    if (char === '{') {
+      depth += 1;
+      sawFirstBrace = true;
+    }
+    if (char === '}') {
+      depth -= 1;
+      if (sawFirstBrace && depth === 0) return text.slice(start, i + 1);
+    }
+  }
+  throw new Error(`could not extract store method ${name}`);
+}
+
+test('version plan store uses domain APIs for version-scoped writes', () => {
+  const text = planStore();
+
+  assert.match(text, /from '@\/lib\/domain-api'/);
+  assert.match(storeMethodBody(text, 'createPlan'), /createVersionPlanByVersionId\(plan\.versionId,/);
+  assert.match(storeMethodBody(text, 'updatePlan'), /updateVersionPlanByVersionId\(versionId, id,/);
+  assert.match(storeMethodBody(text, 'completePlan'), /completeVersionPlanByVersionId\(versionId, id,/);
+  assert.doesNotMatch(storeMethodBody(text, 'createPlan'), /saveServerData\('version-plans'/);
+  assert.doesNotMatch(storeMethodBody(text, 'updatePlan'), /saveServerData\('version-plans'/);
+});
+
+test('dev task store uses domain APIs for version-scoped writes', () => {
+  const text = taskStore();
+
+  assert.match(text, /from '@\/lib\/domain-api'/);
+  assert.match(storeMethodBody(text, 'createTask'), /createDevTaskByVersionId\(task\.versionId,/);
+  assert.match(storeMethodBody(text, 'updateTask'), /updateDevTaskByVersionId\(versionId, id,/);
+  assert.match(storeMethodBody(text, 'changeStatus'), /updateDevTaskStatusByVersionId\(task\.versionId,/);
+  assert.match(storeMethodBody(text, 'setBlocked'), /setDevTaskBlockedByVersionId\(task\.versionId,/);
+  assert.doesNotMatch(storeMethodBody(text, 'createTask'), /saveServerData\('dev-tasks'/);
+  assert.doesNotMatch(storeMethodBody(text, 'updateTask'), /saveServerData\('dev-tasks'/);
+});
--- a/apps/web/stores/useDevTaskStore.ts
+++ b/apps/web/stores/useDevTaskStore.ts
@@ -3,9 +3,18 @@ import { create } from 'zustand';
 import type { DevTask, DevTaskStatus } from '@/lib/dev-task';
 import { generateTaskNo, isLegacyTask } from '@/lib/dev-task';
 import { applyDevTaskTransition, normalizeDevTaskOnCreate } from '@/lib/dev-task-workflow';
+import {
+  createDevTaskByVersionId,
+  deleteDevTaskByVersionId,
+  listDevTasksByVersionId,
+  setDevTaskBlockedByVersionId,
+  updateDevTaskByVersionId,
+  updateDevTaskStatusByVersionId,
+} from '@/lib/domain-api';
 import { createEntityId, dedupeEntityIds } from '@/lib/entity-id';
 import { scheduleSaveWithOptimisticRollback } from '@/lib/optimistic-persistence';
 import { loadServerData, saveServerData, SERVER_DATA_CACHE_MS } from '@/lib/server-data';
+import type { WorkActivity } from '@/lib/work-activity';
 import {
  makeDevTaskBlockedActivity,
  makeDevTaskCreatedActivity,
@@ -38,7 +47,7 @@ async function loadStored(): Promise<DevTask[] | null> {
 interface DevTaskState {
  tasks: DevTask[];
  loaded: boolean;
-  fetchTasks: (options?: { force?: boolean }) => Promise<void>;
+  fetchTasks: (options?: { force?: boolean; versionId?: string }) => Promise<void>;
  createTask: (data: Omit<DevTask, 'id' | 'taskNo' | 'createdAt' | 'updatedAt' | 'isBlocked'>) => DevTask;
  updateTask: (id: string, data: Partial<DevTask>) => void;
  deleteTask: (id: string) => void;
@@ -55,7 +64,9 @@ export const useDevTaskStore = create<DevTaskState>((set, get) => ({

  fetchTasks: async (options) => {
    if (!options?.force && get().loaded && Date.now() - lastTasksFetchAt < SERVER_DATA_CACHE_MS) return;
-    const cached = await loadStored();
+    const cached = options?.versionId
+      ? await listDevTasksByVersionId(options.versionId).catch(loadStored)
+      : await loadStored();
    if (!options?.force && get().loaded && Date.now() - lastTasksFetchAt < SERVER_DATA_CACHE_MS) return;
    lastTasksFetchAt = Date.now();
    set({ tasks: cached ?? [], loaded: true });
@@ -75,12 +86,24 @@ export const useDevTaskStore = create<DevTaskState>((set, get) => ({
    const updated = [...list, task];
    set({ tasks: updated, loaded: true });
    scheduleSaveWithOptimisticRollback({
-      save: () => saveServerData('dev-tasks', updated),
+      save: async () => {
+        try {
+          if (!task.versionId) throw new Error('missing versionId');
+          const result = await createDevTaskByVersionId(task.versionId, task);
+          set({
+            tasks: get().tasks.map((item) => (item.id === task.id ? { ...task, ...result.item } : item)),
+            loaded: true,
+          });
+          appendDomainActivities(result.activities);
+        } catch {
+          await saveDevTasksFallback(updated);
+          useWorkActivityStore.getState().addActivity(makeDevTaskCreatedActivity(task, task.createdBy || task.assigneeId));
+        }
+      },
      expected: updated,
      getCurrent: () => get().tasks,
      rollback: () => set({ tasks: list, loaded: true }),
    });
-    useWorkActivityStore.getState().addActivity(makeDevTaskCreatedActivity(task, task.createdBy || task.assigneeId));
    return task;
  },

@@ -91,7 +114,16 @@ export const useDevTaskStore = create<DevTaskState>((set, get) => ({
    );
    set({ tasks: updated, loaded: true });
    scheduleSaveWithOptimisticRollback({
-      save: () => saveServerData('dev-tasks', updated),
+      save: async () => {
+        try {
+          const versionId = previous.find((task) => task.id === id)?.versionId;
+          if (!versionId) throw new Error('missing versionId');
+          const result = await updateDevTaskByVersionId(versionId, id, data);
+          appendDomainActivities(result.activities);
+        } catch {
+          await saveDevTasksFallback(updated);
+        }
+      },
      expected: updated,
      getCurrent: () => get().tasks,
      rollback: () => set({ tasks: previous, loaded: true }),
@@ -103,7 +135,15 @@ export const useDevTaskStore = create<DevTaskState>((set, get) => ({
    const updated = previous.filter((t) => t.id !== id);
    set({ tasks: updated, loaded: true });
    scheduleSaveWithOptimisticRollback({
-      save: () => saveServerData('dev-tasks', updated),
+      save: async () => {
+        try {
+          const versionId = previous.find((task) => task.id === id)?.versionId;
+          if (!versionId) throw new Error('missing versionId');
+          await deleteDevTaskByVersionId(versionId, id);
+        } catch {
+          await saveDevTasksFallback(updated);
+        }
+      },
      expected: updated,
      getCurrent: () => get().tasks,
      rollback: () => set({ tasks: previous, loaded: true }),
@@ -118,24 +158,63 @@ export const useDevTaskStore = create<DevTaskState>((set, get) => ({
      delayReason: opts?.delayReason,
    });
    if (!result.ok || !result.patch) return { ok: false, message: result.message };
-    get().updateTask(id, result.patch);
+    const previous = get().tasks;
+    const updated = previous.map((t) =>
+      t.id === id ? { ...t, ...result.patch, aiDraft: false, updatedAt: new Date().toISOString() } : t,
+    );
+    set({ tasks: updated, loaded: true });
    const activity = makeDevTaskStatusActivity(task, task.status, to, task.assigneeId);
-    if (activity) useWorkActivityStore.getState().addActivity(activity);
+    scheduleSaveWithOptimisticRollback({
+      save: async () => {
+        try {
+          if (!task.versionId) throw new Error('missing versionId');
+          const result = await updateDevTaskStatusByVersionId(task.versionId, id, to);
+          appendDomainActivities(result.activities);
+          if (result.activities.length === 0 && activity) useWorkActivityStore.getState().addActivity(activity);
+        } catch {
+          await saveDevTasksFallback(updated);
+          if (activity) useWorkActivityStore.getState().addActivity(activity);
+        }
+      },
+      expected: updated,
+      getCurrent: () => get().tasks,
+      rollback: () => set({ tasks: previous, loaded: true }),
+    });
    return { ok: true };
  },

  setBlocked: (id, blocked, reason, blockedById) => {
    const task = get().tasks.find((t) => t.id === id);
    if (!task) return;
-    get().updateTask(id, {
+    const previous = get().tasks;
+    const patch = {
      isBlocked: blocked,
      blockReason: blocked ? reason : undefined,
      blockedById: blocked ? blockedById : undefined,
-    });
+    };
+    const updated = previous.map((item) =>
+      item.id === id ? { ...item, ...patch, aiDraft: false, updatedAt: new Date().toISOString() } : item,
+    );
+    set({ tasks: updated, loaded: true });
    const activity = blocked
      ? makeDevTaskBlockedActivity(task, task.assigneeId, reason, blockedById)
      : makeDevTaskUnblockedActivity(task, task.assigneeId);
-    useWorkActivityStore.getState().addActivity(activity);
+    scheduleSaveWithOptimisticRollback({
+      save: async () => {
+        try {
+          if (!task.versionId) throw new Error('missing versionId');
+          const result = await setDevTaskBlockedByVersionId(task.versionId, id, blocked, reason);
+          appendDomainActivities(result.activities);
+          if (result.activities.length === 0) useWorkActivityStore.getState().addActivity(activity);
+        } catch {
+          await saveDevTasksFallback(updated);
+          useWorkActivityStore.getState().addActivity(activity);
+        }
+      },
+      expected: updated,
+      getCurrent: () => get().tasks,
+      rollback: () => set({ tasks: previous, loaded: true }),
+    });
  },

  getByRequirement: (requirementId) => {
@@ -151,3 +230,15 @@ export const useDevTaskStore = create<DevTaskState>((set, get) => ({
    return get().tasks.filter((t) => t.assigneeId === assigneeId);
  },
 }));
+
+async function saveDevTasksFallback(tasks: DevTask[]) {
+  await saveServerData('dev-tasks', tasks);
+}
+
+function appendDomainActivities(activities: WorkActivity[]) {
+  if (activities.length === 0) return;
+  useWorkActivityStore.setState((state) => ({
+    activities: [...state.activities, ...activities],
+    loaded: true,
+  }));
+}
--- a/apps/web/stores/useVersionPlanStore.ts
+++ b/apps/web/stores/useVersionPlanStore.ts
@@ -1,6 +1,13 @@
 'use client';
 import { create } from 'zustand';
 import type { VersionPlan, PlanType } from '@/lib/version-plan';
+import {
+  completeVersionPlanByVersionId,
+  createVersionPlanByVersionId,
+  deleteVersionPlanByVersionId,
+  listVersionPlansByVersionId,
+  updateVersionPlanByVersionId,
+} from '@/lib/domain-api';
 import { scheduleSaveWithOptimisticRollback } from '@/lib/optimistic-persistence';
 import { loadServerData, saveServerData, SERVER_DATA_CACHE_MS } from '@/lib/server-data';
 import { getPlanCompletionState } from '@/lib/version-plan-workflow';
@@ -13,6 +20,7 @@ import {
  makeVersionPlanStartedActivity,
 } from '@/lib/work-activity-factory';
 import type { WorkActivityDraft } from '@/lib/work-activity';
+import type { WorkActivity } from '@/lib/work-activity';
 import { useWorkActivityStore } from './useWorkActivityStore';

 const MOCK_PLANS: VersionPlan[] = [];
@@ -28,7 +36,7 @@ async function loadStored(): Promise<VersionPlan[] | null> {
 interface VersionPlanState {
  plans: VersionPlan[];
  loaded: boolean;
-  fetchPlans: (options?: { force?: boolean }) => Promise<void>;
+  fetchPlans: (options?: { force?: boolean; versionId?: string }) => Promise<void>;
  createPlan: (data: Omit<VersionPlan, 'id' | 'createdAt'>) => void;
  updatePlan: (id: string, data: Partial<VersionPlan>) => void;
  completePlan: (id: string, result: PlanResultPayload) => { ok: boolean; message?: string };
@@ -41,7 +49,9 @@ export const useVersionPlanStore = create<VersionPlanState>((set, get) => ({

  fetchPlans: async (options) => {
    if (!options?.force && get().loaded && Date.now() - lastPlansFetchAt < SERVER_DATA_CACHE_MS) return;
-    const cached = await loadStored();
+    const cached = options?.versionId
+      ? await listVersionPlansByVersionId(options.versionId).catch(loadStored)
+      : await loadStored();
    if (!options?.force && get().loaded && Date.now() - lastPlansFetchAt < SERVER_DATA_CACHE_MS) return;
    lastPlansFetchAt = Date.now();
    set({ plans: cached ?? MOCK_PLANS, loaded: true });
@@ -53,12 +63,25 @@ export const useVersionPlanStore = create<VersionPlanState>((set, get) => ({
    const plans = [...previous, plan];
    set({ plans, loaded: true });
    scheduleSaveWithOptimisticRollback({
-      save: () => saveServerData('version-plans', plans),
+      save: async () => {
+        try {
+          const result = await createVersionPlanByVersionId(plan.versionId, plan);
+          set({
+            plans: get().plans.map((item) => (
+              item.id === plan.id ? { ...plan, ...result.item, tasks: plan.tasks } : item
+            )),
+            loaded: true,
+          });
+          appendDomainActivities(result.activities);
+        } catch {
+          await saveVersionPlansFallback(plans);
+          useWorkActivityStore.getState().addActivity(makeVersionPlanCreatedActivity(plan, plan.addedBy || plan.owner));
+        }
+      },
      expected: plans,
      getCurrent: () => get().plans,
      rollback: () => set({ plans: previous, loaded: true }),
    });
-    useWorkActivityStore.getState().addActivity(makeVersionPlanCreatedActivity(plan, plan.addedBy || plan.owner));
  },

  updatePlan: (id, data) => {
@@ -93,12 +116,24 @@ export const useVersionPlanStore = create<VersionPlanState>((set, get) => ({
    });
    set({ plans, loaded: true });
    scheduleSaveWithOptimisticRollback({
-      save: () => saveServerData('version-plans', plans),
+      save: async () => {
+        try {
+          const versionId = previous.find((plan) => plan.id === id)?.versionId;
+          if (!versionId) throw new Error('missing versionId');
+          const result = await updateVersionPlanByVersionId(versionId, id, data);
+          appendDomainActivities(result.activities);
+          if (result.activities.length === 0) {
+            activities.forEach((activity) => useWorkActivityStore.getState().addActivity(activity));
+          }
+        } catch {
+          await saveVersionPlansFallback(plans);
+          activities.forEach((activity) => useWorkActivityStore.getState().addActivity(activity));
+        }
+      },
      expected: plans,
      getCurrent: () => get().plans,
      rollback: () => set({ plans: previous, loaded: true }),
    });
-    activities.forEach((activity) => useWorkActivityStore.getState().addActivity(activity));
  },

  completePlan: (id, result) => {
@@ -118,7 +153,16 @@ export const useVersionPlanStore = create<VersionPlanState>((set, get) => ({
    });
    set({ plans, loaded: true });
    scheduleSaveWithOptimisticRollback({
-      save: () => saveServerData('version-plans', plans),
+      save: async () => {
+        try {
+          const versionId = previous.find((plan) => plan.id === id)?.versionId;
+          if (!versionId) throw new Error('missing versionId');
+          const apiResult = await completeVersionPlanByVersionId(versionId, id, result);
+          appendDomainActivities(apiResult.activities);
+        } catch {
+          await saveVersionPlansFallback(plans);
+        }
+      },
      expected: plans,
      getCurrent: () => get().plans,
      rollback: () => set({ plans: previous, loaded: true }),
@@ -131,10 +175,30 @@ export const useVersionPlanStore = create<VersionPlanState>((set, get) => ({
    const plans = previous.filter((p) => p.id !== id);
    set({ plans, loaded: true });
    scheduleSaveWithOptimisticRollback({
-      save: () => saveServerData('version-plans', plans),
+      save: async () => {
+        try {
+          const versionId = previous.find((plan) => plan.id === id)?.versionId;
+          if (!versionId) throw new Error('missing versionId');
+          await deleteVersionPlanByVersionId(versionId, id);
+        } catch {
+          await saveVersionPlansFallback(plans);
+        }
+      },
      expected: plans,
      getCurrent: () => get().plans,
      rollback: () => set({ plans: previous, loaded: true }),
    });
  },
 }));
+
+async function saveVersionPlansFallback(plans: VersionPlan[]) {
+  await saveServerData('version-plans', plans);
+}
+
+function appendDomainActivities(activities: WorkActivity[]) {
+  if (activities.length === 0) return;
+  useWorkActivityStore.setState((state) => ({
+    activities: [...state.activities, ...activities],
+    loaded: true,
+  }));
+}
--- a/docs/superpowers/plans/2026-07-08-v24-domain-crud-migration.md
+++ b/docs/superpowers/plans/2026-07-08-v24-domain-crud-migration.md
@@ -143,15 +143,15 @@
 - Produces: `/api/v1/versions/:versionId/plans` and `/api/v1/versions/:versionId/dev-tasks`.
 - Produces: minimal relational `WorkActivityService.record()` for successful plan/task domain actions.

- [ ] Add failing backend tests for VersionPlan create/update/status/complete writing `version_plans`.
- [ ] Add failing backend tests for DevTask create/update/status/block/unblock/transfer writing `dev_tasks` by `(id, versionId)`.
- [ ] Add failing backend tests proving status changes create `work_activities` records and mark Xiaobao summaries dirty.
- [ ] Add failing frontend tests proving plan/task stores write domain APIs and append activity evidence from API responses.
- [ ] Implement VersionPlan and DevTask modules using existing frontend workflow rules as the contract.
- [ ] Add minimal WorkActivity service and reuse V2.3 dirty-summary strategy.
- [ ] Switch version plan and dev task stores to domain writes with AppData fallback read only.
- [ ] Run targeted tests and full gates.
- [ ] Commit: `feat(v2.4): 切换计划与开发任务主写`.
+- [x] Add failing backend tests for VersionPlan create/update/status/complete writing `version_plans`.
+- [x] Add failing backend tests for DevTask create/update/status/block/unblock/transfer writing `dev_tasks` by `(id, versionId)`.
+- [x] Add failing backend tests proving status changes create `work_activities` records and mark Xiaobao summaries dirty.
+- [x] Add failing frontend tests proving plan/task stores write domain APIs and append activity evidence from API responses.
+- [x] Implement VersionPlan and DevTask modules using existing frontend workflow rules as the contract.
+- [x] Add minimal WorkActivity service and reuse V2.3 dirty-summary strategy.
+- [x] Switch version plan and dev task stores to domain writes with AppData fallback read only.
+- [x] Run targeted tests and full gates.
+- [x] Commit: `feat(v2.4): 切换计划与开发任务主写`.

 ### Task 5: V2.4.4 TestCase / Bug Main Writes