feature: Tasks tab added for lab organizations. tasks now can be assigned and their status can be updated by the assignee.

backend/src/modules/cases/cases.controller.ts

@@ -50,7 +50,7 @@ export class CasesController {
   }
 
   @Patch(':id/tasks/:taskId')
-  @ApiOperation({ summary: 'Update task assignee or status' })
+  @ApiOperation({ summary: 'Update task assignee or priority' })
   updateTask(
     @Param('id') id: string,
     @Param('taskId') taskId: string,

backend/src/modules/cases/cases.service.ts

@@ -200,14 +200,19 @@ export class CasesService {
     }
 
     if (dto.assigneeUserId !== undefined && dto.assigneeUserId !== null) {
-      await this.ensureLabMember(dto.assigneeUserId, labOrganizationId);
+      await this.ensureAssignableMember(dto.assigneeUserId, labOrganizationId);
     }
 
     const updated = await this.prisma.labCaseTask.update({
       where: { id: taskId },
       data: {
-        ...(dto.assigneeUserId !== undefined ? { assigneeUserId: dto.assigneeUserId } : {}),
-        ...(dto.status !== undefined ? { status: dto.status } : {}),
+        ...(dto.assigneeUserId !== undefined
+          ? {
+              assigneeUserId: dto.assigneeUserId,
+              assignedAt: dto.assigneeUserId === null ? null : new Date(),
+            }
+          : {}),
+        ...(dto.priority !== undefined ? { priority: dto.priority } : {}),
       },
       include: {
         assignee: { select: { id: true, name: true, email: true } },
@@ -222,18 +227,27 @@ export class CasesService {
 
     const memberships = await this.prisma.membership.findMany({
       where: { organizationId: labOrganizationId, isActive: true },
-      include: { user: { select: { id: true, name: true, email: true } } },
+      include: {
+        user: { select: { id: true, name: true, email: true } },
+        permissions: { include: { permission: true } },
+      },
       orderBy: [{ isOwner: 'desc' }, { createdAt: 'asc' }],
     });
 
     return {
       success: true,
-      data: memberships.map((m) => ({
-        userId: m.user.id,
-        name: m.user.name,
-        email: m.user.email,
-        isOwner: m.isOwner,
-      })),
+      data: memberships
+        .filter((m) => {
+          if (m.isOwner) return true;
+          const names = m.permissions.map((p) => p.permission.name);
+          return names.includes('TAB_TASKS_READ') || names.includes('TAB_TASKS_EDIT');
+        })
+        .map((m) => ({
+          userId: m.user.id,
+          name: m.user.name,
+          email: m.user.email,
+          isOwner: m.isOwner,
+        })),
     };
   }
 
@@ -377,7 +391,10 @@ export class CasesService {
       stepOrder: number;
       stepLabel: string;
       status: LabTaskStatus;
+      priority: number;
       assigneeUserId: string | null;
+      assignedAt: Date | null;
+      createdAt: Date;
       assignee: { id: string; name: string; email: string } | null;
     }>,
   ) {
@@ -411,7 +428,10 @@ export class CasesService {
     stepOrder: number;
     stepLabel: string;
     status: LabTaskStatus;
+    priority: number;
     assigneeUserId: string | null;
+    assignedAt: Date | null;
+    createdAt: Date;
     assignee: { id: string; name: string; email: string } | null;
   }) {
     return {
@@ -421,6 +441,9 @@ export class CasesService {
       stepOrder: task.stepOrder,
       stepLabel: task.stepLabel,
       status: task.status,
+      priority: task.priority,
+      assignedAt: task.assignedAt?.toISOString() ?? null,
+      createdAt: task.createdAt.toISOString(),
       assigneeUserId: task.assigneeUserId,
       assignee: task.assignee
         ? { id: task.assignee.id, name: task.assignee.name, email: task.assignee.email }
@@ -428,14 +451,20 @@ export class CasesService {
     };
   }
 
-  private async ensureLabMember(userId: string, labOrganizationId: string) {
+  private async ensureAssignableMember(userId: string, labOrganizationId: string) {
     const membership = await this.prisma.membership.findFirst({
       where: { userId, organizationId: labOrganizationId, isActive: true },
-      select: { id: true },
+      include: { permissions: { include: { permission: true } } },
     });
     if (!membership) {
       throw new BadRequestException('Assignee must be an active member of this lab');
     }
+    if (membership.isOwner) return;
+    const names = membership.permissions.map((p) => p.permission.name);
+    if (names.includes('TAB_TASKS_READ') || names.includes('TAB_TASKS_EDIT')) {
+      return;
+    }
+    throw new BadRequestException('Assignee must have access to the Tasks tab');
   }
 
   private async assertCanReadCases(userId: string, organizationId: string) {

backend/src/modules/cases/dto/cases.dto.ts

@@ -1,6 +1,5 @@
 import { Transform } from 'class-transformer';
-import { IsDateString, IsEnum, IsInt, IsOptional, IsString, IsUUID, Max, Min, ValidateIf } from 'class-validator';
-import { LabTaskStatus } from '@prisma/client';
+import { IsDateString, IsInt, IsOptional, IsString, IsUUID, Max, Min, ValidateIf } from 'class-validator';
 
 export class UpdateLabCaseTaskDto {
   @IsOptional()
@@ -9,8 +8,11 @@ export class UpdateLabCaseTaskDto {
   assigneeUserId?: string | null;
 
   @IsOptional()
-  @IsEnum(LabTaskStatus)
-  status?: LabTaskStatus;
+  @Transform(({ value }) => Number(value))
+  @IsInt()
+  @Min(1)
+  @Max(5)
+  priority?: number;
 }
 
 export class ListLabCasesDto {
@@ -46,4 +48,4 @@ export class ListLabCasesDto {
   @Min(1)
   @Max(100)
   limit = 20;
-}
+}