diff --git a/apps/api/prisma/migrations/20261007100000_activity_type_defs/migration.sql b/apps/api/prisma/migrations/20261007100000_activity_type_defs/migration.sql
new file mode 100644
index 0000000..7d46906
--- /dev/null
+++ b/apps/api/prisma/migrations/20261007100000_activity_type_defs/migration.sql
@@ -0,0 +1,37 @@
+-- AlterTable
+ALTER TABLE "Activity" ADD COLUMN     "fields" JSONB,
+ADD COLUMN     "participantIds" TEXT[] DEFAULT ARRAY[]::TEXT[],
+ADD COLUMN     "typeDefId" TEXT;
+
+-- CreateTable
+CREATE TABLE "ActivityTypeDef" (
+    "id" TEXT NOT NULL,
+    "organizationId" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "baseType" "ActivityType" NOT NULL DEFAULT 'task',
+    "icon" TEXT NOT NULL DEFAULT 'check',
+    "color" TEXT NOT NULL DEFAULT 'green',
+    "fields" JSONB NOT NULL DEFAULT '[]',
+    "position" INTEGER NOT NULL DEFAULT 0,
+    "isActive" BOOLEAN NOT NULL DEFAULT true,
+    "isSystem" BOOLEAN NOT NULL DEFAULT false,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "ActivityTypeDef_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "ActivityTypeDef_organizationId_position_idx" ON "ActivityTypeDef"("organizationId", "position");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "ActivityTypeDef_organizationId_name_key" ON "ActivityTypeDef"("organizationId", "name");
+
+-- CreateIndex
+CREATE INDEX "Activity_typeDefId_idx" ON "Activity"("typeDefId");
+
+-- AddForeignKey
+ALTER TABLE "ActivityTypeDef" ADD CONSTRAINT "ActivityTypeDef_organizationId_fkey" FOREIGN KEY ("organizationId") REFERENCES "Organization"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Activity" ADD CONSTRAINT "Activity_typeDefId_fkey" FOREIGN KEY ("typeDefId") REFERENCES "ActivityTypeDef"("id") ON DELETE SET NULL ON UPDATE CASCADE;
diff --git a/apps/api/prisma/schema.prisma b/apps/api/prisma/schema.prisma
index 4d0000d..87a93e6 100644
--- a/apps/api/prisma/schema.prisma
+++ b/apps/api/prisma/schema.prisma
@@ -207,6 +207,7 @@ model Organization {
   leads                  Lead[]
   leadStages             LeadStage[]
   activityStages         ActivityStage[]
+  activityTypeDefs       ActivityTypeDef[]
   leadEvents             LeadEvent[]
   leadImportJobs         LeadImportJob[]
   conversationSettings   ConversationSettings?
@@ -646,6 +647,30 @@ model ActivityStage {
   @@index([organizationId, position])
 }
 
+/// نوع فعالیت قابل تعریف توسط سازمان با فیلدهای اختصاصی
+model ActivityTypeDef {
+  id             String       @id @default(cuid())
+  organizationId String
+  organization   Organization @relation(fields: [organizationId], references: [id], onDelete: Cascade)
+  name           String
+  /// نوع پایه — مبنای گزارش‌ها، یادآورها و سازگاری
+  baseType       ActivityType @default(task)
+  icon           String       @default("check")
+  color          String       @default("green")
+  /// تعریف فیلدها: [{ key, label, type, options?, required?, placeholder? }]
+  fields         Json         @default("[]")
+  position       Int          @default(0)
+  isActive       Boolean      @default(true)
+  /// نوع اصلیِ هر baseType — حذف‌شدنی نیست
+  isSystem       Boolean      @default(false)
+  activities     Activity[]
+  createdAt      DateTime     @default(now())
+  updatedAt      DateTime     @updatedAt
+
+  @@unique([organizationId, name])
+  @@index([organizationId, position])
+}
+
 model Activity {
   id             String         @id @default(cuid())
   organizationId String
@@ -683,10 +708,18 @@ model Activity {
   /// مرحله (ستون کانبان)؛ null یا مرحلهٔ ناهم‌نوع با status → اولین مرحلهٔ هم‌نوع
   stageId        String?
   stage          ActivityStage? @relation(fields: [stageId], references: [id], onDelete: SetNull)
+  /// نوع سفارشی؛ null → نوع اصلیِ همان type
+  typeDefId      String?
+  typeDef        ActivityTypeDef? @relation(fields: [typeDefId], references: [id], onDelete: SetNull)
+  /// مقادیر فیلدهای اختصاصی نوع (کلید فیلد → مقدار)
+  fields         Json?
+  /// کاربران شرکت‌کننده؛ فعالیت در لیست آن‌ها هم دیده می‌شود
+  participantIds String[]       @default([])
   createdAt      DateTime       @default(now())
   updatedAt      DateTime       @updatedAt
 
   @@index([stageId])
+  @@index([typeDefId])
   @@index([organizationId, status, dueAt])
   @@index([organizationId, assigneeId])
   @@index([organizationId, createdById])
diff --git a/apps/api/src/activities/activities.controller.ts b/apps/api/src/activities/activities.controller.ts
index 831a687..268c70b 100644
--- a/apps/api/src/activities/activities.controller.ts
+++ b/apps/api/src/activities/activities.controller.ts
@@ -25,15 +25,19 @@ import type { Actor } from '../common/record-scope';
 import { ActivitiesService } from './activities.service';
 import { ActivitiesExcelService } from './activities-excel.service';
 import { ActivityStagesService } from './activity-stages.service';
+import { ActivityTypesService } from './activity-types.service';
 import {
   CreateActivityDto,
   CreateActivityStageDto,
+  CreateActivityTypeDto,
   ImportActivityRowsDto,
   ListActivitiesQueryDto,
   MoveActivityStageDto,
   ReorderActivityStagesDto,
+  ReorderActivityTypesDto,
   UpdateActivityDto,
   UpdateActivityStageDto,
+  UpdateActivityTypeDto,
 } from './dto';
 import { brand } from '@mento/shared';
 
@@ -49,6 +53,7 @@ export class ActivitiesController {
     private readonly activitiesService: ActivitiesService,
     private readonly excelService: ActivitiesExcelService,
     private readonly stagesService: ActivityStagesService,
+    private readonly typesService: ActivityTypesService,
   ) {}
 
   @Get('summary')
@@ -94,6 +99,44 @@ export class ActivitiesController {
     return { ok: true };
   }
 
+  @Get('types')
+  listTypes(@CurrentUser() user: Actor) {
+    return this.typesService.list(user.organizationId);
+  }
+
+  @Post('types')
+  @UseGuards(RolesGuard)
+  @Roles('owner', 'admin')
+  createType(@CurrentUser() user: Actor, @Body() dto: CreateActivityTypeDto) {
+    return this.typesService.create(user.organizationId, dto);
+  }
+
+  @Patch('types/reorder')
+  @UseGuards(RolesGuard)
+  @Roles('owner', 'admin')
+  reorderTypes(@CurrentUser() user: Actor, @Body() dto: ReorderActivityTypesDto) {
+    return this.typesService.reorder(user.organizationId, dto.typeIds);
+  }
+
+  @Patch('types/:id')
+  @UseGuards(RolesGuard)
+  @Roles('owner', 'admin')
+  updateType(
+    @CurrentUser() user: Actor,
+    @Param('id') id: string,
+    @Body() dto: UpdateActivityTypeDto,
+  ) {
+    return this.typesService.update(user.organizationId, id, dto);
+  }
+
+  @Delete('types/:id')
+  @UseGuards(RolesGuard)
+  @Roles('owner', 'admin')
+  async removeType(@CurrentUser() user: Actor, @Param('id') id: string) {
+    await this.typesService.remove(user.organizationId, id);
+    return { ok: true };
+  }
+
   @Get('stage-counts')
   stageCounts(
     @CurrentUser() user: Actor,
@@ -107,6 +150,7 @@ export class ActivitiesController {
       query.desk,
       {
         type: query.type,
+        typeDefId: query.typeDefId,
         status: query.status,
         assigneeId: query.assigneeId,
       },
@@ -137,6 +181,7 @@ export class ActivitiesController {
       query.desk,
       {
         type: query.type,
+        typeDefId: query.typeDefId,
         status: query.status,
         assigneeId: query.assigneeId,
       },
diff --git a/apps/api/src/activities/activities.module.ts b/apps/api/src/activities/activities.module.ts
index f67e796..fb69c95 100644
--- a/apps/api/src/activities/activities.module.ts
+++ b/apps/api/src/activities/activities.module.ts
@@ -3,6 +3,7 @@ import { ActivitiesController } from './activities.controller';
 import { ActivitiesService } from './activities.service';
 import { ActivitiesExcelService } from './activities-excel.service';
 import { ActivityStagesService } from './activity-stages.service';
+import { ActivityTypesService } from './activity-types.service';
 import { NotificationsModule } from '../notifications/notifications.module';
 import { AutomationsModule } from '../automations/automations.module';
 import { MessageAutomationsModule } from '../message-automations/message-automations.module';
@@ -10,7 +11,12 @@ import { MessageAutomationsModule } from '../message-automations/message-automat
 @Module({
   imports: [NotificationsModule, AutomationsModule, MessageAutomationsModule],
   controllers: [ActivitiesController],
-  providers: [ActivitiesService, ActivitiesExcelService, ActivityStagesService],
-  exports: [ActivitiesService, ActivityStagesService],
+  providers: [
+    ActivitiesService,
+    ActivitiesExcelService,
+    ActivityStagesService,
+    ActivityTypesService,
+  ],
+  exports: [ActivitiesService, ActivityStagesService, ActivityTypesService],
 })
 export class ActivitiesModule {}
diff --git a/apps/api/src/activities/activities.service.ts b/apps/api/src/activities/activities.service.ts
index 2ef0eb2..1a261f9 100644
--- a/apps/api/src/activities/activities.service.ts
+++ b/apps/api/src/activities/activities.service.ts
@@ -5,6 +5,7 @@ import {
 } from '@nestjs/common';
 import type {
   ActivityDto,
+  ActivityFieldValues,
   ActivityFilter,
   ActivitySummaryDto,
   ActivityStageCountsDto,
@@ -17,10 +18,22 @@ import { PrismaService } from '../prisma/prisma.service';
 import { NotificationsService } from '../notifications/notifications.service';
 import { AutomationsService } from '../automations/automations.service';
 import { MessageAutomationsService } from '../message-automations/message-automations.service';
-import { type Actor, assigneeWhere, dealAccessWhere, ownerWhere } from '../common/record-scope';
+import {
+  type Actor,
+  activityAccessWhere,
+  dealAccessWhere,
+  ownerWhere,
+} from '../common/record-scope';
 import { normalizeTags } from '../common/tags';
 import { buildSearchWhere, ci } from '../common/search';
 import { ActivityStagesService, type StageDefaults } from './activity-stages.service';
+import {
+  ActivityTypesService,
+  type SystemTypes,
+  type TypeRow,
+} from './activity-types.service';
+
+type DtoContext = { stages?: StageDefaults; types?: SystemTypes };
 
 type ActivityActor = Pick<Actor, 'userId' | 'role'>;
 
@@ -29,6 +42,7 @@ type StageScope = { stageId: string };
 
 type ListFacets = {
   type?: ActivityDto['type'];
+  typeDefId?: string;
   status?: ActivityDto['status'];
   assigneeId?: string;
 };
@@ -57,10 +71,14 @@ type ActivityRow = {
   assignees: Array<{ id: string; fullName: string }>;
   createdBy: { id: string; fullName: string } | null;
   stage?: { id: string; kind: ActivityDto['status'] } | null;
+  typeDef?: { id: string; name: string; icon: string; color: string } | null;
+  fields?: Prisma.JsonValue | null;
+  participantIds?: string[];
 };
 
 const include = {
   stage: { select: { id: true, kind: true } },
+  typeDef: { select: { id: true, name: true, icon: true, color: true } },
   person: { select: { id: true, firstName: true, lastName: true } },
   company: { select: { id: true, name: true } },
   deal: { select: { id: true, title: true } },
@@ -77,14 +95,23 @@ export class ActivitiesService {
     private readonly automations: AutomationsService,
     private readonly messageAutomations: MessageAutomationsService,
     private readonly stages: ActivityStagesService,
+    private readonly types: ActivityTypesService,
   ) {}
 
+  private async ctx(organizationId: string): Promise<DtoContext> {
+    const [stages, types] = await Promise.all([
+      this.stages.defaults(organizationId),
+      this.types.system(organizationId),
+    ]);
+    return { stages, types };
+  }
+
   async summary(
     organizationId: string,
     actor: ActivityActor,
   ): Promise<ActivitySummaryDto> {
     const { start, end } = dayBounds();
-    const scope = assigneeWhere(actor);
+    const scope = activityAccessWhere(actor);
     const [todayCount, overdueCount] = await Promise.all([
       this.prisma.activity.count({
         where: {
@@ -139,10 +166,11 @@ export class ActivitiesService {
       }),
     ]);
 
+    const ctx = await this.ctx(organizationId);
     return {
-      today: today.map((row) => this.toDto(row)),
-      overdue: overdue.map((row) => this.toDto(row)),
-      upcoming: upcoming.map((row) => this.toDto(row)),
+      today: today.map((row) => this.toDto(row, ctx)),
+      overdue: overdue.map((row) => this.toDto(row, ctx)),
+      upcoming: upcoming.map((row) => this.toDto(row, ctx)),
       todayCount,
       overdueCount,
     };
@@ -168,6 +196,7 @@ export class ActivitiesService {
     facets?: ListFacets,
     stageScope?: StageScope,
   ): Promise<PaginatedResponse<ActivityDto>> {
+    const typeRows = await this.types.rows(organizationId);
     const where = this.buildWhere(
       organizationId,
       actor,
@@ -178,13 +207,17 @@ export class ActivitiesService {
       desk,
       facets,
       stageScope,
+      typeRows,
     );
     if (stageScope && stageScope.stageId !== 'all') {
       (where.AND as Prisma.ActivityWhereInput[]).push(
         await this.stages.whereForStage(organizationId, stageScope.stageId),
       );
     }
-    const defaults = await this.stages.defaults(organizationId);
+    const ctx: DtoContext = {
+      stages: await this.stages.defaults(organizationId),
+      types: this.types.systemOf(typeRows),
+    };
     const take = Math.min(Math.max(limit, 1), 200);
     const [rows, total] = await this.prisma.$transaction([
       this.prisma.activity.findMany({
@@ -198,7 +231,7 @@ export class ActivitiesService {
     ]);
 
     return {
-      items: rows.map((row) => this.toDto(row, defaults)),
+      items: rows.map((row) => this.toDto(row, ctx)),
       total,
       page,
       limit: take,
@@ -227,6 +260,7 @@ export class ActivitiesService {
       desk,
       facets,
       { stageId: 'all' },
+      await this.types.rows(organizationId),
     );
     const groups = await this.prisma.activity.groupBy({
       by: ['status', 'stageId'],
@@ -276,7 +310,7 @@ export class ActivitiesService {
     if (stage.kind === 'done' && existing?.status !== 'done') {
       await this.fireDone(organizationId, row);
     }
-    return this.toDto(row, await this.stages.defaults(organizationId));
+    return this.toDto(row, await this.ctx(organizationId));
   }
 
   async get(
@@ -285,11 +319,19 @@ export class ActivitiesService {
     actor: ActivityActor,
   ): Promise<ActivityDto> {
     const row = await this.prisma.activity.findFirst({
-      where: { id, organizationId, ...assigneeWhere(actor) },
+      where: { id, organizationId, ...activityAccessWhere(actor) },
       include,
     });
     if (!row) throw new NotFoundException('فعالیت پیدا نشد');
-    return this.toDto(row, await this.stages.defaults(organizationId));
+    const dto = this.toDto(row, await this.ctx(organizationId));
+    if (row.participantIds.length) {
+      dto.participantUsers = await this.prisma.user.findMany({
+        where: { id: { in: row.participantIds } },
+        select: { id: true, fullName: true },
+        orderBy: { fullName: 'asc' },
+      });
+    }
+    return dto;
   }
 
   async create(
@@ -313,6 +355,15 @@ export class ActivitiesService {
     const initialStage = initialStageId
       ? await this.stages.get(organizationId, initialStageId)
       : null;
+    const resolved = await this.types.resolve(organizationId, {
+      typeDefId: dto.typeDefId,
+      type: dto.type,
+    });
+    const { fields, participantIds } = await this.types.sanitizeValues(
+      organizationId,
+      resolved.fields,
+      dto.fields,
+    );
 
     const row = await this.prisma.activity.create({
       data: {
@@ -325,7 +376,10 @@ export class ActivitiesService {
             }
           : {}),
         title: dto.title.trim(),
-        type: dto.type ?? 'task',
+        type: resolved.baseType,
+        typeDefId: resolved.typeDefId,
+        fields: fields as Prisma.InputJsonValue,
+        participantIds,
         priority: dto.priority ?? 'medium',
         description: emptyToNull(dto.description),
         dueAt: dto.dueAt ? new Date(dto.dueAt) : null,
@@ -358,6 +412,11 @@ export class ActivitiesService {
         entityId: row.id,
       });
     }
+    await this.notifyParticipants(
+      organizationId,
+      row,
+      participantIds.filter((uid) => !assigneeIds.includes(uid) && uid !== userId),
+    );
 
     await this.messageAutomations.onEvent('activity_created', {
       organizationId,
@@ -374,7 +433,7 @@ export class ActivitiesService {
       await this.fireDone(organizationId, row);
     }
 
-    return this.toDto(row, await this.stages.defaults(organizationId));
+    return this.toDto(row, await this.ctx(organizationId));
   }
 
   async update(
@@ -386,9 +445,33 @@ export class ActivitiesService {
     await this.ensureExists(organizationId, id, actor);
     await this.assertLinks(organizationId, actor, dto);
 
+    const existing = await this.prisma.activity.findFirst({
+      where: { id, organizationId },
+      select: { status: true, type: true, typeDefId: true, fields: true, participantIds: true },
+    });
     const data: Prisma.ActivityUncheckedUpdateInput = {};
     if (dto.title !== undefined) data.title = dto.title.trim();
-    if (dto.type !== undefined) data.type = dto.type;
+    let addedParticipants: string[] = [];
+    const typeChanged = 'typeDefId' in dto || dto.type !== undefined;
+    if (typeChanged || dto.fields !== undefined) {
+      const resolved = await this.types.resolve(
+        organizationId,
+        typeChanged
+          ? { typeDefId: dto.typeDefId, type: dto.type }
+          : { typeDefId: existing?.typeDefId, type: existing?.type },
+      );
+      const { fields, participantIds } = await this.types.sanitizeValues(
+        organizationId,
+        resolved.fields,
+        dto.fields ?? existing?.fields,
+      );
+      data.type = resolved.baseType;
+      data.typeDefId = resolved.typeDefId;
+      data.fields = fields as Prisma.InputJsonValue;
+      data.participantIds = participantIds;
+      const before = new Set(existing?.participantIds ?? []);
+      addedParticipants = participantIds.filter((uid) => !before.has(uid) && uid !== actor.userId);
+    }
     if (dto.priority !== undefined) data.priority = dto.priority;
     if ('description' in dto) data.description = emptyToNull(dto.description);
     if ('dueAt' in dto) data.dueAt = dto.dueAt ? new Date(dto.dueAt) : null;
@@ -434,10 +517,6 @@ export class ActivitiesService {
         dto.status === 'done' ? new Date() : dto.status === 'open' ? null : undefined;
     }
 
-    const existing = await this.prisma.activity.findFirst({
-      where: { id, organizationId },
-      select: { status: true },
-    });
     const row = await this.prisma.activity.update({
       where: { id },
       data: {
@@ -448,10 +527,21 @@ export class ActivitiesService {
       },
       include,
     });
+    if (addedParticipants.length) {
+      const assigneeSet = new Set([
+        ...(row.assignee ? [row.assignee.id] : []),
+        ...row.assignees.map((a) => a.id),
+      ]);
+      await this.notifyParticipants(
+        organizationId,
+        row,
+        addedParticipants.filter((uid) => !assigneeSet.has(uid)),
+      );
+    }
     if (dto.status === 'done' && existing?.status !== 'done') {
       await this.fireDone(organizationId, row);
     }
-    return this.toDto(row, await this.stages.defaults(organizationId));
+    return this.toDto(row, await this.ctx(organizationId));
   }
 
   async complete(
@@ -472,7 +562,7 @@ export class ActivitiesService {
     if (existing?.status !== 'done') {
       await this.fireDone(organizationId, row);
     }
-    return this.toDto(row, await this.stages.defaults(organizationId));
+    return this.toDto(row, await this.ctx(organizationId));
   }
 
   async remove(
@@ -501,6 +591,7 @@ export class ActivitiesService {
     desk?: 'mine' | 'team',
     facets?: ListFacets,
     stageScope?: StageScope,
+    typeRows: TypeRow[] = [],
   ): Prisma.ActivityWhereInput {
     const { start, end } = dayBounds();
     const scope: Prisma.ActivityWhereInput =
@@ -509,13 +600,16 @@ export class ActivitiesService {
             OR: [
               { assigneeId: actor.userId },
               { assignees: { some: { id: actor.userId } } },
+              { participantIds: { has: actor.userId } },
             ],
           }
-        : assigneeWhere(actor);
+        : activityAccessWhere(actor);
     const facetAssignee = facets?.assigneeId?.trim();
+    const facetTypeDef = facets?.typeDefId?.trim();
     const andParts: Prisma.ActivityWhereInput[] = [
       scope,
       ...(facets?.type ? [{ type: facets.type }] : []),
+      ...(facetTypeDef ? [this.types.whereForType(typeRows, facetTypeDef)] : []),
       ...(facets?.status ? [{ status: facets.status }] : []),
       ...(facetAssignee
         ? [
@@ -547,6 +641,10 @@ export class ActivitiesService {
       },
       { company: { name: ci(t) } },
       { deal: { title: ci(t) } },
+      { assignee: { fullName: ci(t) } },
+      { assignees: { some: { fullName: ci(t) } } },
+      ...typesMatching(t).map((type) => ({ type })),
+      ...this.types.searchByName(typeRows, t),
     ]);
     if (search) andParts.push(search);
     const base: Prisma.ActivityWhereInput = {
@@ -633,7 +731,7 @@ export class ActivitiesService {
     actor: ActivityActor,
   ) {
     const found = await this.prisma.activity.findFirst({
-      where: { id, organizationId, ...assigneeWhere(actor) },
+      where: { id, organizationId, ...activityAccessWhere(actor) },
       select: { id: true },
     });
     if (!found) throw new NotFoundException('فعالیت پیدا نشد');
@@ -684,9 +782,37 @@ export class ActivitiesService {
     }
   }
 
-  private toDto(row: ActivityRow, defaults?: StageDefaults): ActivityDto {
+  private async notifyParticipants(
+    organizationId: string,
+    row: { id: string; title: string },
+    userIds: string[],
+  ) {
+    for (const uid of new Set(userIds)) {
+      await this.notifications.create({
+        organizationId,
+        userId: uid,
+        type: 'activity_assigned',
+        title: 'شما به‌عنوان شرکت‌کننده اضافه شدید',
+        body: row.title,
+        link: `/activities/${row.id}`,
+        entityType: 'activity',
+        entityId: row.id,
+      });
+    }
+  }
+
+  private toDto(row: ActivityRow, ctx?: DtoContext): ActivityDto {
+    const fields =
+      row.fields && typeof row.fields === 'object' && !Array.isArray(row.fields)
+        ? (row.fields as unknown as ActivityFieldValues)
+        : {};
     return {
-      stageId: this.stages.effectiveStageId(row, defaults),
+      stageId: this.stages.effectiveStageId(row, ctx?.stages),
+      typeDef: row.typeDef
+        ? this.types.toSummary(row.typeDef)
+        : (ctx?.types?.[row.type] ?? null),
+      fields,
+      participantIds: row.participantIds ?? [],
       id: row.id,
       type: row.type,
       status: row.status,
@@ -741,6 +867,22 @@ export class ActivitiesService {
   }
 }
 
+const TYPE_SEARCH_TERMS: Record<ActivityDto['type'], string[]> = {
+  call: ['تماس', 'تلفن', 'call'],
+  meeting: ['جلسه', 'ملاقات', 'meeting'],
+  task: ['وظیفه', 'تسک', 'task'],
+  note: ['پیام', 'یادداشت', 'note'],
+};
+
+/** جستجوی «جلسه» یا «تماس» → فیلتر نوع فعالیت */
+function typesMatching(term: string): ActivityDto['type'][] {
+  const t = term.trim().toLowerCase();
+  if (t.length < 2) return [];
+  return (Object.keys(TYPE_SEARCH_TERMS) as ActivityDto['type'][]).filter((type) =>
+    TYPE_SEARCH_TERMS[type].some((label) => label.includes(t) || t.includes(label)),
+  );
+}
+
 function emptyToNull(value?: string | null): string | null {
   if (value == null) return null;
   const trimmed = value.trim();
diff --git a/apps/api/src/activities/activity-types.service.ts b/apps/api/src/activities/activity-types.service.ts
new file mode 100644
index 0000000..8762ca0
--- /dev/null
+++ b/apps/api/src/activities/activity-types.service.ts
@@ -0,0 +1,649 @@
+import { BadRequestException, Injectable, NotFoundException } from '@nestjs/common';
+import type {
+  ActivityChecklistItem,
+  ActivityFieldDef,
+  ActivityFieldType,
+  ActivityFieldValue,
+  ActivityFieldValues,
+  ActivityParticipantsValue,
+  ActivityStageColor,
+  ActivityType,
+  ActivityTypeDefDto,
+  ActivityTypeIcon,
+  ActivityTypeSummaryDto,
+  CreateActivityTypeRequest,
+  UpdateActivityTypeRequest,
+} from '@mento/shared';
+import {
+  ACTIVITY_FIELD_TYPES,
+  ACTIVITY_FIELD_TYPES_WITH_OPTIONS,
+  ACTIVITY_STAGE_COLORS,
+  ACTIVITY_TYPE_ICONS,
+} from '@mento/shared';
+import { Prisma } from '@prisma/client';
+import { randomUUID } from 'node:crypto';
+import { PrismaService } from '../prisma/prisma.service';
+
+const BASE_TYPES: ActivityType[] = ['call', 'meeting', 'task', 'note'];
+const MAX_FIELDS = 30;
+const MAX_OPTIONS = 50;
+const MAX_CHECKLIST = 100;
+const MAX_PARTICIPANTS = 100;
+
+type Seed = {
+  name: string;
+  baseType: ActivityType;
+  icon: ActivityTypeIcon;
+  color: ActivityStageColor;
+  isSystem?: boolean;
+  fields: ActivityFieldDef[];
+};
+
+const DEFAULT_TYPES: Seed[] = [
+  {
+    name: 'تماس',
+    baseType: 'call',
+    icon: 'phone',
+    color: 'green',
+    isSystem: true,
+    fields: [
+      { key: 'call_direction', label: 'جهت تماس', type: 'select', options: ['خروجی', 'ورودی'] },
+      {
+        key: 'call_result',
+        label: 'نتیجه تماس',
+        type: 'select',
+        options: [
+          'پاسخ داد',
+          'پاسخ نداد',
+          'مشغول بود',
+          'خاموش / در دسترس نبود',
+          'شماره اشتباه',
+          'نیاز به پیگیری مجدد',
+        ],
+      },
+    ],
+  },
+  {
+    name: 'جلسه',
+    baseType: 'meeting',
+    icon: 'users',
+    color: 'purple',
+    isSystem: true,
+    fields: [
+      {
+        key: 'meeting_subject',
+        label: 'موضوع جلسه',
+        type: 'text',
+        placeholder: 'مثلاً: بررسی پیش‌فاکتور و شرایط پرداخت',
+      },
+      { key: 'meeting_participants', label: 'شرکت‌کنندگان', type: 'participants' },
+      {
+        key: 'meeting_location',
+        label: 'محل برگزاری / لینک جلسه',
+        type: 'text',
+        placeholder: 'آدرس یا لینک جلسهٔ آنلاین',
+      },
+      { key: 'meeting_minutes', label: 'صورت‌جلسه', type: 'textarea' },
+    ],
+  },
+  {
+    name: 'وظیفه',
+    baseType: 'task',
+    icon: 'check',
+    color: 'orange',
+    isSystem: true,
+    fields: [{ key: 'task_checklist', label: 'لیست کارها', type: 'checklist' }],
+  },
+  {
+    name: 'پیام',
+    baseType: 'note',
+    icon: 'chat',
+    color: 'blue',
+    isSystem: true,
+    fields: [
+      {
+        key: 'message_channel',
+        label: 'کانال ارسال',
+        type: 'select',
+        options: ['پیامک', 'واتساپ', 'تلگرام', 'ایتا', 'بله', 'ایمیل', 'دایرکت اینستاگرام'],
+      },
+    ],
+  },
+  {
+    name: 'بازدید حضوری',
+    baseType: 'meeting',
+    icon: 'pin',
+    color: 'rose',
+    fields: [
+      { key: 'visit_address', label: 'آدرس محل بازدید', type: 'text' },
+      { key: 'visit_participants', label: 'همراهان بازدید', type: 'participants' },
+      { key: 'visit_result', label: 'نتیجهٔ بازدید', type: 'textarea' },
+    ],
+  },
+  {
+    name: 'ارائه / دمو محصول',
+    baseType: 'meeting',
+    icon: 'star',
+    color: 'purple',
+    fields: [
+      { key: 'demo_product', label: 'محصول / خدمت', type: 'text' },
+      { key: 'demo_participants', label: 'شرکت‌کنندگان', type: 'participants' },
+      { key: 'demo_link', label: 'لینک جلسه', type: 'url' },
+      {
+        key: 'demo_result',
+        label: 'نتیجهٔ دمو',
+        type: 'select',
+        options: ['علاقه‌مند', 'نیاز به بررسی بیشتر', 'درخواست پیش‌فاکتور', 'عدم علاقه'],
+      },
+    ],
+  },
+  {
+    name: 'پیگیری',
+    baseType: 'call',
+    icon: 'bell',
+    color: 'orange',
+    fields: [
+      {
+        key: 'followup_reason',
+        label: 'دلیل پیگیری',
+        type: 'select',
+        options: ['پیش‌فاکتور', 'پرداخت', 'ارسال کالا', 'پشتیبانی', 'تمدید قرارداد', 'سایر'],
+      },
+      { key: 'followup_result', label: 'نتیجهٔ پیگیری', type: 'textarea' },
+      { key: 'followup_next', label: 'تاریخ پیگیری بعدی', type: 'date' },
+    ],
+  },
+  {
+    name: 'ایمیل',
+    baseType: 'note',
+    icon: 'mail',
+    color: 'slate',
+    fields: [
+      { key: 'email_subject', label: 'موضوع ایمیل', type: 'text' },
+      { key: 'email_to', label: 'گیرنده', type: 'text', placeholder: 'example@domain.com' },
+    ],
+  },
+];
+
+export type TypeRow = {
+  id: string;
+  name: string;
+  baseType: ActivityType;
+  icon: string;
+  color: string;
+  fields: Prisma.JsonValue;
+  position: number;
+  isActive: boolean;
+  isSystem: boolean;
+};
+
+/** نوع اصلی هر baseType — مقصد فعالیت‌های بدون typeDefId */
+export type SystemTypes = Record<ActivityType, ActivityTypeSummaryDto | null>;
+
+export type ResolvedType = {
+  /** مقداری که در Activity.typeDefId ذخیره می‌شود (نوع اصلی → null) */
+  typeDefId: string | null;
+  baseType: ActivityType;
+  fields: ActivityFieldDef[];
+};
+
+const select = {
+  id: true,
+  name: true,
+  baseType: true,
+  icon: true,
+  color: true,
+  fields: true,
+  position: true,
+  isActive: true,
+  isSystem: true,
+} satisfies Prisma.ActivityTypeDefSelect;
+
+@Injectable()
+export class ActivityTypesService {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async ensureDefaults(organizationId: string): Promise<void> {
+    const count = await this.prisma.activityTypeDef.count({ where: { organizationId } });
+    if (count > 0) return;
+    await this.prisma.activityTypeDef.createMany({
+      data: DEFAULT_TYPES.map((t, i) => ({
+        organizationId,
+        name: t.name,
+        baseType: t.baseType,
+        icon: t.icon,
+        color: t.color,
+        isSystem: Boolean(t.isSystem),
+        fields: t.fields as unknown as Prisma.InputJsonValue,
+        position: i,
+      })),
+      skipDuplicates: true,
+    });
+  }
+
+  async rows(organizationId: string): Promise<TypeRow[]> {
+    await this.ensureDefaults(organizationId);
+    return this.prisma.activityTypeDef.findMany({
+      where: { organizationId },
+      orderBy: [{ position: 'asc' }, { createdAt: 'asc' }],
+      select,
+    });
+  }
+
+  async list(organizationId: string): Promise<ActivityTypeDefDto[]> {
+    return (await this.rows(organizationId)).map((r) => this.toDto(r));
+  }
+
+  systemOf(rows: TypeRow[]): SystemTypes {
+    const out: SystemTypes = { call: null, meeting: null, task: null, note: null };
+    for (const r of rows) {
+      if (r.isSystem && !out[r.baseType]) out[r.baseType] = this.toSummary(r);
+    }
+    return out;
+  }
+
+  async system(organizationId: string): Promise<SystemTypes> {
+    return this.systemOf(await this.rows(organizationId));
+  }
+
+  /** فیلتر Prisma برای فعالیت‌هایی که «مؤثراً» از این نوع هستند */
+  whereForType(rows: TypeRow[], typeDefId: string): Prisma.ActivityWhereInput {
+    const def = rows.find((r) => r.id === typeDefId);
+    if (!def) return { id: '__none__' };
+    if (!def.isSystem) return { typeDefId: def.id };
+    return { OR: [{ typeDefId: def.id }, { typeDefId: null, type: def.baseType }] };
+  }
+
+  /** جستجوی نام نوع → شرط‌های OR */
+  searchByName(rows: TypeRow[], term: string): Prisma.ActivityWhereInput[] {
+    const t = term.trim();
+    if (t.length < 2) return [];
+    return rows
+      .filter((r) => r.name.includes(t))
+      .map((r) => this.whereForType(rows, r.id));
+  }
+
+  /**
+   * نوع مؤثر برای ذخیره: typeDefId صریح، یا نوع اصلیِ type.
+   * نوع اصلی با typeDefId=null ذخیره می‌شود تا با داده‌های قدیمی یکسان باشد.
+   */
+  async resolve(
+    organizationId: string,
+    input: { typeDefId?: string | null; type?: ActivityType | null },
+  ): Promise<ResolvedType> {
+    const rows = await this.rows(organizationId);
+    const requested = input.typeDefId?.trim();
+    if (requested) {
+      const def = rows.find((r) => r.id === requested);
+      if (!def) throw new BadRequestException('نوع فعالیت انتخاب‌شده معتبر نیست');
+      return {
+        typeDefId: def.isSystem ? null : def.id,
+        baseType: def.baseType,
+        fields: this.parseFields(def.fields),
+      };
+    }
+    const baseType = input.type && BASE_TYPES.includes(input.type) ? input.type : 'task';
+    const sys = rows.find((r) => r.isSystem && r.baseType === baseType);
+    return { typeDefId: null, baseType, fields: sys ? this.parseFields(sys.fields) : [] };
+  }
+
+  /**
+   * پاک‌سازی مقادیر بر اساس تعریف فیلدها؛ فقط کلیدهای همین نوع نگه داشته می‌شوند.
+   * participantIds = کاربران معتبر همهٔ فیلدهای شرکت‌کنندگان.
+   */
+  async sanitizeValues(
+    organizationId: string,
+    defs: ActivityFieldDef[],
+    raw: unknown,
+  ): Promise<{ fields: ActivityFieldValues; participantIds: string[] }> {
+    const input =
+      raw && typeof raw === 'object' && !Array.isArray(raw) ? (raw as Record<string, unknown>) : {};
+    const out: ActivityFieldValues = {};
+    const participantFields: Array<{ key: string; value: ActivityParticipantsValue }> = [];
+
+    for (const def of defs) {
+      const value = this.cleanValue(def, input[def.key]);
+      if (value === null) {
+        if (def.required && def.type !== 'checkbox') {
+          throw new BadRequestException(`فیلد «${def.label}» را تکمیل کنید`);
+        }
+        continue;
+      }
+      if (def.type === 'participants') {
+        participantFields.push({ key: def.key, value: value as ActivityParticipantsValue });
+      }
+      out[def.key] = value;
+    }
+
+    const userIds = [...new Set(participantFields.flatMap((p) => p.value.userIds))];
+    const personIds = [...new Set(participantFields.flatMap((p) => p.value.people.map((x) => x.id)))];
+    const [validUsers, validPeople] = await Promise.all([
+      userIds.length
+        ? this.prisma.user.findMany({
+            where: { id: { in: userIds }, memberships: { some: { organizationId } } },
+            select: { id: true },
+          })
+        : Promise.resolve([]),
+      personIds.length
+        ? this.prisma.person.findMany({
+            where: { id: { in: personIds }, organizationId },
+            select: { id: true, firstName: true, lastName: true },
+          })
+        : Promise.resolve([]),
+    ]);
+    const userSet = new Set(validUsers.map((u) => u.id));
+    const personNames = new Map(
+      validPeople.map((p) => [p.id, `${p.firstName} ${p.lastName}`.trim()]),
+    );
+    for (const p of participantFields) {
+      const next: ActivityParticipantsValue = {
+        userIds: p.value.userIds.filter((id) => userSet.has(id)),
+        people: p.value.people
+          .filter((x) => personNames.has(x.id))
+          .map((x) => ({ id: x.id, name: personNames.get(x.id) || x.name })),
+        guests: p.value.guests,
+      };
+      const def = defs.find((d) => d.key === p.key)!;
+      if (!next.userIds.length && !next.people.length && !next.guests.length) {
+        if (def.required) throw new BadRequestException(`فیلد «${def.label}» را تکمیل کنید`);
+        delete out[p.key];
+      } else {
+        out[p.key] = next;
+      }
+    }
+
+    const participantIds = [
+      ...new Set(
+        Object.values(out)
+          .filter((v): v is ActivityParticipantsValue => isParticipants(v))
+          .flatMap((v) => v.userIds),
+      ),
+    ];
+    return { fields: out, participantIds };
+  }
+
+  async create(
+    organizationId: string,
+    dto: CreateActivityTypeRequest,
+  ): Promise<ActivityTypeDefDto> {
+    await this.ensureDefaults(organizationId);
+    const max = await this.prisma.activityTypeDef.aggregate({
+      where: { organizationId },
+      _max: { position: true },
+    });
+    try {
+      const row = await this.prisma.activityTypeDef.create({
+        data: {
+          organizationId,
+          name: this.cleanName(dto.name),
+          baseType: this.cleanBase(dto.baseType),
+          icon: this.cleanIcon(dto.icon),
+          color: this.cleanColor(dto.color),
+          fields: this.cleanFieldDefs(dto.fields ?? []) as unknown as Prisma.InputJsonValue,
+          position: (max._max.position ?? -1) + 1,
+        },
+        select,
+      });
+      return this.toDto(row);
+    } catch (e) {
+      throw this.mapError(e);
+    }
+  }
+
+  async update(
+    organizationId: string,
+    id: string,
+    dto: UpdateActivityTypeRequest,
+  ): Promise<ActivityTypeDefDto> {
+    const current = await this.get(organizationId, id);
+    if (current.isSystem && dto.baseType && dto.baseType !== current.baseType) {
+      throw new BadRequestException('نوع پایهٔ انواع اصلی قابل تغییر نیست');
+    }
+    if (current.isSystem && dto.isActive === false) {
+      throw new BadRequestException('انواع اصلی را نمی‌توان غیرفعال کرد');
+    }
+    const nextBase = dto.baseType ? this.cleanBase(dto.baseType) : current.baseType;
+    try {
+      const row = await this.prisma.$transaction(async (tx) => {
+        if (nextBase !== current.baseType) {
+          await tx.activity.updateMany({
+            where: { organizationId, typeDefId: id },
+            data: { type: nextBase },
+          });
+        }
+        return tx.activityTypeDef.update({
+          where: { id },
+          data: {
+            ...(dto.name != null ? { name: this.cleanName(dto.name) } : {}),
+            ...(dto.icon != null ? { icon: this.cleanIcon(dto.icon) } : {}),
+            ...(dto.color != null ? { color: this.cleanColor(dto.color) } : {}),
+            ...(dto.fields != null
+              ? { fields: this.cleanFieldDefs(dto.fields) as unknown as Prisma.InputJsonValue }
+              : {}),
+            ...(dto.isActive != null ? { isActive: dto.isActive } : {}),
+            baseType: nextBase,
+          },
+          select,
+        });
+      });
+      return this.toDto(row);
+    } catch (e) {
+      throw this.mapError(e);
+    }
+  }
+
+  async reorder(organizationId: string, typeIds: string[]): Promise<ActivityTypeDefDto[]> {
+    await this.prisma.$transaction(
+      typeIds.map((id, position) =>
+        this.prisma.activityTypeDef.updateMany({
+          where: { id, organizationId },
+          data: { position },
+        }),
+      ),
+    );
+    return this.list(organizationId);
+  }
+
+  async remove(organizationId: string, id: string): Promise<void> {
+    const def = await this.get(organizationId, id);
+    if (def.isSystem) throw new BadRequestException('انواع اصلی قابل حذف نیستند');
+    // onDelete: SetNull → فعالیت‌ها به نوع اصلیِ نوع پایهٔ خود برمی‌گردند
+    await this.prisma.activityTypeDef.delete({ where: { id } });
+  }
+
+  toSummary(row: Pick<TypeRow, 'id' | 'name' | 'icon' | 'color'>): ActivityTypeSummaryDto {
+    return {
+      id: row.id,
+      name: row.name,
+      icon: this.cleanIcon(row.icon),
+      color: this.cleanColor(row.color),
+    };
+  }
+
+  parseFields(raw: Prisma.JsonValue): ActivityFieldDef[] {
+    if (!Array.isArray(raw)) return [];
+    return raw.filter(
+      (f): f is ActivityFieldDef & Prisma.JsonObject =>
+        Boolean(f) && typeof f === 'object' && !Array.isArray(f) && typeof (f as { key?: unknown }).key === 'string',
+    ) as ActivityFieldDef[];
+  }
+
+  private async get(organizationId: string, id: string): Promise<TypeRow> {
+    const row = await this.prisma.activityTypeDef.findFirst({
+      where: { id, organizationId },
+      select,
+    });
+    if (!row) throw new NotFoundException('نوع فعالیت پیدا نشد');
+    return row;
+  }
+
+  private cleanValue(def: ActivityFieldDef, raw: unknown): ActivityFieldValue {
+    switch (def.type) {
+      case 'text':
+        return cleanText(raw, 500);
+      case 'textarea':
+        return cleanText(raw, 5000);
+      case 'url':
+        return cleanText(raw, 1000);
+      case 'number': {
+        if (raw === '' || raw == null) return null;
+        const n = typeof raw === 'number' ? raw : Number(String(raw).replace(/,/g, ''));
+        return Number.isFinite(n) ? n : null;
+      }
+      case 'date': {
+        const s = cleanText(raw, 40);
+        return s && /^\d{4}-\d{2}-\d{2}/.test(s) && !Number.isNaN(new Date(s).getTime())
+          ? s
+          : null;
+      }
+      case 'select': {
+        const s = cleanText(raw, 200);
+        return s && (def.options ?? []).includes(s) ? s : null;
+      }
+      case 'multiselect': {
+        if (!Array.isArray(raw)) return null;
+        const opts = new Set(def.options ?? []);
+        const list = [...new Set(raw.filter((v): v is string => typeof v === 'string' && opts.has(v)))];
+        return list.length ? list : null;
+      }
+      case 'checkbox':
+        return raw === true ? true : raw === false ? false : null;
+      case 'checklist': {
+        if (!Array.isArray(raw)) return null;
+        const items: ActivityChecklistItem[] = [];
+        for (const it of raw.slice(0, MAX_CHECKLIST)) {
+          if (!it || typeof it !== 'object') continue;
+          const o = it as Record<string, unknown>;
+          const text = cleanText(o.text, 300);
+          if (!text) continue;
+          const id = typeof o.id === 'string' && o.id.trim() ? o.id.trim().slice(0, 64) : randomUUID();
+          items.push({ id, text, done: o.done === true });
+        }
+        return items.length ? items : null;
+      }
+      case 'participants': {
+        if (!raw || typeof raw !== 'object' || Array.isArray(raw)) return null;
+        const o = raw as Record<string, unknown>;
+        const userIds = Array.isArray(o.userIds)
+          ? [...new Set(o.userIds.filter((v): v is string => typeof v === 'string' && Boolean(v.trim())))]
+          : [];
+        const people = Array.isArray(o.people)
+          ? o.people
+              .filter(
+                (p): p is { id: string; name?: unknown } =>
+                  Boolean(p) && typeof p === 'object' && typeof (p as { id?: unknown }).id === 'string',
+              )
+              .map((p) => ({ id: p.id, name: cleanText(p.name, 200) ?? '' }))
+          : [];
+        const guests = Array.isArray(o.guests)
+          ? [
+              ...new Set(
+                o.guests
+                  .map((g) => cleanText(g, 120))
+                  .filter((g): g is string => Boolean(g)),
+              ),
+            ]
+          : [];
+        if (!userIds.length && !people.length && !guests.length) return null;
+        return {
+          userIds: userIds.slice(0, MAX_PARTICIPANTS),
+          people: people.slice(0, MAX_PARTICIPANTS),
+          guests: guests.slice(0, MAX_PARTICIPANTS),
+        };
+      }
+      default:
+        return null;
+    }
+  }
+
+  private cleanFieldDefs(raw: ActivityFieldDef[]): ActivityFieldDef[] {
+    if (!Array.isArray(raw)) throw new BadRequestException('تعریف فیلدها نامعتبر است');
+    if (raw.length > MAX_FIELDS) {
+      throw new BadRequestException(`حداکثر ${MAX_FIELDS} فیلد برای هر نوع مجاز است`);
+    }
+    const keys = new Set<string>();
+    return raw.map((f, i) => {
+      const label = typeof f?.label === 'string' ? f.label.trim() : '';
+      if (!label) throw new BadRequestException(`عنوان فیلد ${i + 1} لازم است`);
+      if (label.length > 80) throw new BadRequestException('عنوان فیلد حداکثر ۸۰ کاراکتر است');
+      const type = ACTIVITY_FIELD_TYPES.includes(f.type as ActivityFieldType)
+        ? (f.type as ActivityFieldType)
+        : null;
+      if (!type) throw new BadRequestException(`نوع فیلد «${label}» معتبر نیست`);
+      let key = typeof f.key === 'string' ? f.key.trim().toLowerCase() : '';
+      if (!/^[a-z][a-z0-9_]{0,39}$/.test(key)) key = `f_${randomUUID().slice(0, 8)}`;
+      if (keys.has(key)) throw new BadRequestException(`کلید فیلد «${label}» تکراری است`);
+      keys.add(key);
+      const def: ActivityFieldDef = { key, label, type };
+      if (ACTIVITY_FIELD_TYPES_WITH_OPTIONS.includes(type)) {
+        const options = [
+          ...new Set(
+            (Array.isArray(f.options) ? f.options : [])
+              .map((o) => (typeof o === 'string' ? o.trim() : ''))
+              .filter(Boolean)
+              .map((o) => o.slice(0, 200)),
+          ),
+        ].slice(0, MAX_OPTIONS);
+        if (!options.length) {
+          throw new BadRequestException(`برای فیلد «${label}» حداقل یک گزینه تعریف کنید`);
+        }
+        def.options = options;
+      }
+      if (f.required) def.required = true;
+      const placeholder = typeof f.placeholder === 'string' ? f.placeholder.trim().slice(0, 200) : '';
+      if (placeholder) def.placeholder = placeholder;
+      return def;
+    });
+  }
+
+  private cleanName(raw: string): string {
+    const name = raw?.trim() ?? '';
+    if (!name) throw new BadRequestException('نام نوع فعالیت لازم است');
+    if (name.length > 60) throw new BadRequestException('نام نوع فعالیت حداکثر ۶۰ کاراکتر است');
+    return name;
+  }
+
+  private cleanBase(raw?: ActivityType): ActivityType {
+    return raw && BASE_TYPES.includes(raw) ? raw : 'task';
+  }
+
+  private cleanIcon(raw?: string): ActivityTypeIcon {
+    return (ACTIVITY_TYPE_ICONS as readonly string[]).includes(raw ?? '')
+      ? (raw as ActivityTypeIcon)
+      : 'check';
+  }
+
+  private cleanColor(raw?: string): ActivityStageColor {
+    return ACTIVITY_STAGE_COLORS.includes(raw as ActivityStageColor)
+      ? (raw as ActivityStageColor)
+      : 'green';
+  }
+
+  private mapError(e: unknown) {
+    if (e instanceof Prisma.PrismaClientKnownRequestError && e.code === 'P2002') {
+      return new BadRequestException('نوع فعالیتی با این نام وجود دارد');
+    }
+    return e;
+  }
+
+  private toDto(row: TypeRow): ActivityTypeDefDto {
+    return {
+      ...this.toSummary(row),
+      baseType: row.baseType,
+      fields: this.parseFields(row.fields),
+      position: row.position,
+      isActive: row.isActive,
+      isSystem: row.isSystem,
+    };
+  }
+}
+
+function cleanText(raw: unknown, max: number): string | null {
+  if (typeof raw !== 'string' && typeof raw !== 'number') return null;
+  const s = String(raw).trim();
+  return s ? s.slice(0, max) : null;
+}
+
+function isParticipants(v: unknown): v is ActivityParticipantsValue {
+  return Boolean(v) && typeof v === 'object' && !Array.isArray(v) && Array.isArray((v as ActivityParticipantsValue).userIds);
+}
diff --git a/apps/api/src/activities/dto.ts b/apps/api/src/activities/dto.ts
index 7ec0e8a..6ec35bc 100644
--- a/apps/api/src/activities/dto.ts
+++ b/apps/api/src/activities/dto.ts
@@ -6,6 +6,7 @@ import {
   IsDateString,
   IsIn,
   IsInt,
+  IsObject,
   IsOptional,
   IsString,
   Max,
@@ -14,6 +15,8 @@ import {
   MinLength,
   ValidateIf,
 } from 'class-validator';
+import type { ActivityFieldDef, ActivityFieldValues, ActivityTypeIcon } from '@mento/shared';
+import { ACTIVITY_TYPE_ICONS } from '@mento/shared';
 
 /** تکه‌های JSON از ایمپورت مرورگرگرا */
 export class ImportActivityRowsDto {
@@ -66,6 +69,11 @@ export class ListActivitiesQueryDto {
   @IsString()
   assigneeId?: string;
 
+  /** نوع فعالیت (تعریف‌شده در سازمان) */
+  @IsOptional()
+  @IsString()
+  typeDefId?: string;
+
   /** شناسهٔ مرحله یا 'all' — حالت تب/کانبان مراحل */
   @IsOptional()
   @IsString()
@@ -151,6 +159,66 @@ export class MoveActivityStageDto {
   stageId!: string;
 }
 
+/** محتوای fields در سرویس بر اساس تعریف نوع اعتبارسنجی می‌شود */
+export class CreateActivityTypeDto {
+  @IsString()
+  @MinLength(1)
+  @MaxLength(60)
+  name!: string;
+
+  @IsOptional()
+  @IsIn(ACTIVITY_TYPES)
+  baseType?: (typeof ACTIVITY_TYPES)[number];
+
+  @IsOptional()
+  @IsIn(ACTIVITY_TYPE_ICONS)
+  icon?: ActivityTypeIcon;
+
+  @IsOptional()
+  @IsIn(STAGE_COLORS)
+  color?: (typeof STAGE_COLORS)[number];
+
+  @IsOptional()
+  @IsArray()
+  @Allow()
+  fields?: ActivityFieldDef[];
+}
+
+export class UpdateActivityTypeDto {
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  @MaxLength(60)
+  name?: string;
+
+  @IsOptional()
+  @IsIn(ACTIVITY_TYPES)
+  baseType?: (typeof ACTIVITY_TYPES)[number];
+
+  @IsOptional()
+  @IsIn(ACTIVITY_TYPE_ICONS)
+  icon?: ActivityTypeIcon;
+
+  @IsOptional()
+  @IsIn(STAGE_COLORS)
+  color?: (typeof STAGE_COLORS)[number];
+
+  @IsOptional()
+  @IsArray()
+  @Allow()
+  fields?: ActivityFieldDef[];
+
+  @IsOptional()
+  @IsBoolean()
+  isActive?: boolean;
+}
+
+export class ReorderActivityTypesDto {
+  @IsArray()
+  @IsString({ each: true })
+  typeIds!: string[];
+}
+
 export class CreateActivityDto {
   @IsString()
   @MinLength(2)
@@ -166,6 +234,15 @@ export class CreateActivityDto {
   @IsIn(ACTIVITY_TYPES)
   type?: (typeof ACTIVITY_TYPES)[number];
 
+  @IsOptional()
+  @ValidateIf((_, v) => v !== '' && v != null)
+  @IsString()
+  typeDefId?: string | null;
+
+  @IsOptional()
+  @IsObject()
+  fields?: ActivityFieldValues;
+
   @IsOptional()
   @IsIn(ACTIVITY_PRIORITIES)
   priority?: (typeof ACTIVITY_PRIORITIES)[number];
@@ -242,6 +319,15 @@ export class UpdateActivityDto {
   @IsIn(ACTIVITY_TYPES)
   type?: (typeof ACTIVITY_TYPES)[number];
 
+  @IsOptional()
+  @ValidateIf((_, v) => v !== '' && v != null)
+  @IsString()
+  typeDefId?: string | null;
+
+  @IsOptional()
+  @IsObject()
+  fields?: ActivityFieldValues;
+
   @IsOptional()
   @IsIn(ACTIVITY_STATUSES)
   status?: (typeof ACTIVITY_STATUSES)[number];
diff --git a/apps/api/src/common/record-scope.ts b/apps/api/src/common/record-scope.ts
index 39b18f7..a1bef18 100644
--- a/apps/api/src/common/record-scope.ts
+++ b/apps/api/src/common/record-scope.ts
@@ -124,6 +124,21 @@ export function assigneeWhere(
   };
 }
 
+/** دسترسی به فعالیت: مسئولان یا شرکت‌کنندگان (فیلد شرکت‌کنندگان) در محدوده دید */
+export function activityAccessWhere(
+  actor: ScopedActor,
+): Prisma.ActivityWhereInput {
+  const ids = scopedOwnerIds(actor, 'activities');
+  if (!ids) return {};
+  return {
+    OR: [
+      { assigneeId: { in: ids } },
+      { assignees: { some: { id: { in: ids } } } },
+      { participantIds: { hasSome: ids } },
+    ],
+  };
+}
+
 /** یادداشت: نویسنده یا پرونده‌های تحت مالکیت در محدوده دید + محرمانگی شخصی */
 export function noteAccessWhere(
   actor: ScopedActor,
diff --git a/apps/web/src/components/activities/ActivitiesKanban.vue b/apps/web/src/components/activities/ActivitiesKanban.vue
index bb3ab37..50f27ae 100644
--- a/apps/web/src/components/activities/ActivitiesKanban.vue
+++ b/apps/web/src/components/activities/ActivitiesKanban.vue
@@ -5,10 +5,10 @@ import axios from 'axios';
 import type {
   ActivityDto,
   ActivityStageDto,
-  ActivityType,
   PaginatedResponse,
 } from '@mento/shared';
 import { api } from '@/lib/api';
+import { activityTypeView } from '@/lib/activity-types';
 import { calendarDaysBetween, formatClockFa, formatJalaliDay, startOfLocalDay, toFaDigits } from '@/lib/jalali';
 import PipelineBoard from '@/components/pipeline/PipelineBoard.vue';
 import DealCardOverlay from '@/components/pipeline/DealCardOverlay.vue';
@@ -59,13 +59,6 @@ const moving = ref(false);
 const stageBusy = ref(false);
 const localOrder = ref<string[] | null>(null);
 
-const typeLabel: Record<ActivityType, string> = {
-  call: 'تماس',
-  meeting: 'جلسه',
-  task: 'وظیفه',
-  note: 'پیام',
-};
-
 const KIND_BADGE: Record<ActivityStageDto['kind'], string | undefined> = {
   open: undefined,
   done: 'انجام‌شده',
@@ -109,7 +102,7 @@ function toCard(item: ActivityDto, stageId: string): PipelineDeal {
   return {
     id: item.id,
     title: item.title,
-    description: [typeLabel[item.type], party].filter(Boolean).join(' · '),
+    description: [activityTypeView(item).name, party].filter(Boolean).join(' · '),
     amount: null,
     date: dateText(item),
     initials: initialsFromTitle(party || item.title),
diff --git a/apps/web/src/components/activities/ActivityFieldsEditor.vue b/apps/web/src/components/activities/ActivityFieldsEditor.vue
new file mode 100644
index 0000000..7b5dfa2
--- /dev/null
+++ b/apps/web/src/components/activities/ActivityFieldsEditor.vue
@@ -0,0 +1,674 @@
+<script setup lang="ts">
+import { ref, watch } from 'vue';
+import type {
+  ActivityChecklistItem,
+  ActivityFieldDef,
+  ActivityFieldValue,
+  ActivityFieldValues,
+  ActivityParticipantsValue,
+  OrgUserDto,
+  PaginatedResponse,
+  PersonDto,
+} from '@mento/shared';
+import { api } from '@/lib/api';
+import { toFaDigits } from '@/lib/jalali';
+import JalaliDateInput from '@/components/JalaliDateInput.vue';
+import UserMultiSelect from '@/components/UserMultiSelect.vue';
+import UiIcon from '@/components/UiIcon.vue';
+
+const props = defineProps<{
+  fields: ActivityFieldDef[];
+  users: OrgUserDto[];
+}>();
+
+const model = defineModel<ActivityFieldValues>({ required: true });
+
+function get<T extends ActivityFieldValue>(key: string, fallback: T): T {
+  const v = model.value[key];
+  return (v ?? fallback) as T;
+}
+
+function set(key: string, value: ActivityFieldValue) {
+  model.value = { ...model.value, [key]: value };
+}
+
+function str(key: string): string {
+  const v = model.value[key];
+  return typeof v === 'string' || typeof v === 'number' ? String(v) : '';
+}
+
+function multi(key: string): string[] {
+  const v = model.value[key];
+  return Array.isArray(v) && v.every((x) => typeof x === 'string') ? (v as string[]) : [];
+}
+
+function toggleMulti(key: string, opt: string) {
+  const list = multi(key);
+  set(key, list.includes(opt) ? list.filter((x) => x !== opt) : [...list, opt]);
+}
+
+/* ---------- چک‌لیست ---------- */
+const checklistDraft = ref<Record<string, string>>({});
+
+function checklist(key: string): ActivityChecklistItem[] {
+  const v = model.value[key];
+  return Array.isArray(v) ? (v as ActivityChecklistItem[]).filter((x) => x && typeof x === 'object') : [];
+}
+
+function addChecklistItem(key: string) {
+  const text = (checklistDraft.value[key] ?? '').trim();
+  if (!text) return;
+  const id = `c_${Date.now().toString(36)}${Math.random().toString(36).slice(2, 6)}`;
+  set(key, [...checklist(key), { id, text, done: false }]);
+  checklistDraft.value = { ...checklistDraft.value, [key]: '' };
+}
+
+function updateChecklistItem(key: string, id: string, patch: Partial<ActivityChecklistItem>) {
+  set(
+    key,
+    checklist(key).map((it) => (it.id === id ? { ...it, ...patch } : it)),
+  );
+}
+
+function removeChecklistItem(key: string, id: string) {
+  set(
+    key,
+    checklist(key).filter((it) => it.id !== id),
+  );
+}
+
+function moveChecklistItem(key: string, index: number, dir: -1 | 1) {
+  const list = [...checklist(key)];
+  const to = index + dir;
+  if (to < 0 || to >= list.length) return;
+  const [it] = list.splice(index, 1);
+  list.splice(to, 0, it!);
+  set(key, list);
+}
+
+/* ---------- شرکت‌کنندگان ---------- */
+function participants(key: string): ActivityParticipantsValue {
+  const v = model.value[key] as ActivityParticipantsValue | null | undefined;
+  return {
+    userIds: v?.userIds ?? [],
+    people: v?.people ?? [],
+    guests: v?.guests ?? [],
+  };
+}
+
+function patchParticipants(key: string, patch: Partial<ActivityParticipantsValue>) {
+  set(key, { ...participants(key), ...patch });
+}
+
+const guestDraft = ref<Record<string, string>>({});
+function addGuest(key: string) {
+  const name = (guestDraft.value[key] ?? '').trim();
+  if (!name) return;
+  const p = participants(key);
+  if (!p.guests.includes(name)) patchParticipants(key, { guests: [...p.guests, name] });
+  guestDraft.value = { ...guestDraft.value, [key]: '' };
+}
+
+const personQuery = ref<Record<string, string>>({});
+const personResults = ref<Record<string, PersonDto[]>>({});
+const personOpenKey = ref('');
+let personTimer: ReturnType<typeof setTimeout> | undefined;
+let personSeq = 0;
+
+function searchPeople(key: string) {
+  personOpenKey.value = key;
+  if (personTimer) clearTimeout(personTimer);
+  const q = (personQuery.value[key] ?? '').trim();
+  if (!q) {
+    personResults.value = { ...personResults.value, [key]: [] };
+    return;
+  }
+  const seq = ++personSeq;
+  personTimer = setTimeout(async () => {
+    try {
+      const { data } = await api.get<PaginatedResponse<PersonDto>>('/people', {
+        params: { q, limit: 8 },
+      });
+      if (seq === personSeq) personResults.value = { ...personResults.value, [key]: data.items };
+    } catch {
+      if (seq === personSeq) personResults.value = { ...personResults.value, [key]: [] };
+    }
+  }, 280);
+}
+
+function addPerson(key: string, p: PersonDto) {
+  const cur = participants(key);
+  if (!cur.people.some((x) => x.id === p.id)) {
+    patchParticipants(key, { people: [...cur.people, { id: p.id, name: p.fullName }] });
+  }
+  personQuery.value = { ...personQuery.value, [key]: '' };
+  personResults.value = { ...personResults.value, [key]: [] };
+  personOpenKey.value = '';
+}
+
+watch(
+  () => props.fields.map((f) => f.key).join('|'),
+  () => {
+    checklistDraft.value = {};
+    guestDraft.value = {};
+    personQuery.value = {};
+    personResults.value = {};
+  },
+);
+</script>
+
+<template>
+  <div class="fields-grid">
+    <div
+      v-for="f in fields"
+      :key="f.key"
+      class="cf"
+      :class="{ wide: ['textarea', 'checklist', 'participants', 'multiselect'].includes(f.type) }"
+    >
+      <label :for="`cf-${f.key}`">
+        {{ f.label }}
+        <i v-if="f.required">*</i>
+      </label>
+
+      <input
+        v-if="f.type === 'text' || f.type === 'url'"
+        :id="`cf-${f.key}`"
+        :type="f.type === 'url' ? 'url' : 'text'"
+        :dir="f.type === 'url' ? 'ltr' : undefined"
+        :value="str(f.key)"
+        :placeholder="f.placeholder || ''"
+        maxlength="1000"
+        @input="set(f.key, ($event.target as HTMLInputElement).value)"
+      />
+
+      <textarea
+        v-else-if="f.type === 'textarea'"
+        :id="`cf-${f.key}`"
+        :value="str(f.key)"
+        :placeholder="f.placeholder || ''"
+        rows="3"
+        @input="set(f.key, ($event.target as HTMLTextAreaElement).value)"
+      />
+
+      <input
+        v-else-if="f.type === 'number'"
+        :id="`cf-${f.key}`"
+        type="number"
+        inputmode="decimal"
+        dir="ltr"
+        :value="str(f.key)"
+        :placeholder="f.placeholder || ''"
+        @input="
+          set(
+            f.key,
+            ($event.target as HTMLInputElement).value === ''
+              ? null
+              : Number(($event.target as HTMLInputElement).value),
+          )
+        "
+      />
+
+      <JalaliDateInput
+        v-else-if="f.type === 'date'"
+        :id="`cf-${f.key}`"
+        :model-value="str(f.key)"
+        @update:model-value="(v: string) => set(f.key, v || null)"
+      />
+
+      <select
+        v-else-if="f.type === 'select'"
+        :id="`cf-${f.key}`"
+        :value="str(f.key)"
+        @change="set(f.key, ($event.target as HTMLSelectElement).value || null)"
+      >
+        <option value="">— انتخاب کنید —</option>
+        <option v-for="opt in f.options ?? []" :key="opt" :value="opt">{{ opt }}</option>
+      </select>
+
+      <div v-else-if="f.type === 'multiselect'" class="chips">
+        <button
+          v-for="opt in f.options ?? []"
+          :key="opt"
+          type="button"
+          class="chip-opt"
+          :class="{ on: multi(f.key).includes(opt) }"
+          @click="toggleMulti(f.key, opt)"
+        >
+          <UiIcon v-if="multi(f.key).includes(opt)" name="check-plain" :size="12" />
+          {{ opt }}
+        </button>
+      </div>
+
+      <label v-else-if="f.type === 'checkbox'" class="switch">
+        <input
+          :id="`cf-${f.key}`"
+          type="checkbox"
+          :checked="get<boolean>(f.key, false) === true"
+          @change="set(f.key, ($event.target as HTMLInputElement).checked)"
+        />
+        <i />
+        <span>{{ get<boolean>(f.key, false) === true ? 'بله' : 'خیر' }}</span>
+      </label>
+
+      <div v-else-if="f.type === 'checklist'" class="checklist">
+        <p v-if="checklist(f.key).length" class="progress">
+          {{ toFaDigits(checklist(f.key).filter((x) => x.done).length) }} از
+          {{ toFaDigits(checklist(f.key).length) }} انجام شده
+        </p>
+        <ul>
+          <li v-for="(it, idx) in checklist(f.key)" :key="it.id" :class="{ done: it.done }">
+            <input
+              type="checkbox"
+              :checked="it.done"
+              aria-label="انجام شد"
+              @change="updateChecklistItem(f.key, it.id, { done: ($event.target as HTMLInputElement).checked })"
+            />
+            <input
+              class="item-text"
+              :value="it.text"
+              maxlength="300"
+              @input="updateChecklistItem(f.key, it.id, { text: ($event.target as HTMLInputElement).value })"
+            />
+            <button type="button" class="mini" :disabled="idx === 0" aria-label="بالا" @click="moveChecklistItem(f.key, idx, -1)">▲</button>
+            <button
+              type="button"
+              class="mini"
+              :disabled="idx === checklist(f.key).length - 1"
+              aria-label="پایین"
+              @click="moveChecklistItem(f.key, idx, 1)"
+            >
+              ▼
+            </button>
+            <button type="button" class="mini danger" aria-label="حذف" @click="removeChecklistItem(f.key, it.id)">
+              <UiIcon name="x" :size="13" />
+            </button>
+          </li>
+        </ul>
+        <div class="add-row">
+          <input
+            v-model="checklistDraft[f.key]"
+            maxlength="300"
+            :placeholder="f.placeholder || 'مورد جدید را بنویسید و Enter بزنید'"
+            @keydown.enter.prevent="addChecklistItem(f.key)"
+          />
+          <button type="button" class="add-btn" @click="addChecklistItem(f.key)">
+            <UiIcon name="plus" :size="14" />
+            افزودن
+          </button>
+        </div>
+      </div>
+
+      <div v-else-if="f.type === 'participants'" class="participants">
+        <div class="p-block">
+          <small>همکاران (فعالیت در لیست آن‌ها هم نمایش داده می‌شود)</small>
+          <UserMultiSelect
+            :model-value="participants(f.key).userIds"
+            :users="users"
+            add-label="افزودن همکار"
+            empty-label="همکاری انتخاب نشده"
+            @update:model-value="(ids: string[]) => patchParticipants(f.key, { userIds: ids })"
+          />
+        </div>
+        <div class="p-block">
+          <small>اشخاص / مشتریان</small>
+          <div class="tags">
+            <span v-for="p in participants(f.key).people" :key="p.id" class="tag">
+              <UiIcon name="user" :size="12" />
+              {{ p.name }}
+              <button
+                type="button"
+                aria-label="حذف"
+                @click="patchParticipants(f.key, { people: participants(f.key).people.filter((x) => x.id !== p.id) })"
+              >
+                ×
+              </button>
+            </span>
+          </div>
+          <div class="person-search">
+            <input
+              v-model="personQuery[f.key]"
+              type="search"
+              placeholder="جستجوی نام یا موبایل شخص…"
+              @input="searchPeople(f.key)"
+              @focus="personOpenKey = f.key"
+            />
+            <ul v-if="personOpenKey === f.key && (personResults[f.key]?.length ?? 0) > 0" class="results">
+              <li v-for="p in personResults[f.key]" :key="p.id">
+                <button type="button" @click="addPerson(f.key, p)">
+                  <b>{{ p.fullName }}</b>
+                  <small v-if="p.company?.name">{{ p.company.name }}</small>
+                </button>
+              </li>
+            </ul>
+          </div>
+        </div>
+        <div class="p-block">
+          <small>مهمانان دیگر (نام آزاد)</small>
+          <div class="tags">
+            <span v-for="g in participants(f.key).guests" :key="g" class="tag guest">
+              {{ g }}
+              <button
+                type="button"
+                aria-label="حذف"
+                @click="patchParticipants(f.key, { guests: participants(f.key).guests.filter((x) => x !== g) })"
+              >
+                ×
+              </button>
+            </span>
+          </div>
+          <div class="add-row">
+            <input
+              v-model="guestDraft[f.key]"
+              maxlength="120"
+              placeholder="نام مهمان و Enter"
+              @keydown.enter.prevent="addGuest(f.key)"
+            />
+            <button type="button" class="add-btn" @click="addGuest(f.key)">
+              <UiIcon name="plus" :size="14" />
+              افزودن
+            </button>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.fields-grid {
+  display: grid;
+  gap: 0.85rem;
+}
+
+.cf {
+  display: grid;
+  gap: 0.35rem;
+  min-width: 0;
+}
+
+.cf > label {
+  margin: 0;
+  color: var(--color-text-muted, #64748b);
+  font-size: var(--fs-xs, 0.78rem);
+  font-weight: 600;
+}
+
+.cf > label i {
+  color: var(--color-danger, #dc2626);
+  font-style: normal;
+}
+
+.cf input:not([type='checkbox']),
+.cf select,
+.cf textarea {
+  width: 100%;
+  border: 1px solid #e2e8f0;
+  border-radius: var(--radius);
+  min-height: var(--control-h);
+  padding: 0 0.85rem;
+  font: inherit;
+  background: #fff;
+  box-sizing: border-box;
+}
+
+.cf textarea {
+  min-height: 5rem;
+  padding: 0.6rem 0.85rem;
+  resize: vertical;
+}
+
+.chips,
+.tags {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.35rem;
+}
+
+.chip-opt {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.25rem;
+  border: 1px solid #e2e8f0;
+  background: #fff;
+  border-radius: 999px;
+  padding: 0.3rem 0.75rem;
+  font: inherit;
+  font-size: 0.82rem;
+  cursor: pointer;
+}
+
+.chip-opt.on {
+  border-color: #5eead4;
+  background: #f0fdfa;
+  color: #0f766e;
+  font-weight: 600;
+}
+
+.switch {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.6rem;
+  cursor: pointer;
+}
+
+.switch input {
+  display: none;
+}
+
+.switch i {
+  width: 44px;
+  height: 26px;
+  border-radius: 999px;
+  background: #e2e8f0;
+  position: relative;
+}
+
+.switch i::after {
+  content: '';
+  position: absolute;
+  inset-inline-start: 3px;
+  top: 3px;
+  width: 20px;
+  height: 20px;
+  border-radius: 999px;
+  background: #fff;
+  transition: 0.18s;
+}
+
+.switch input:checked + i {
+  background: #14b8a6;
+}
+
+.switch input:checked + i::after {
+  inset-inline-start: 21px;
+}
+
+.checklist ul {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: grid;
+  gap: 0.35rem;
+}
+
+.checklist li {
+  display: flex;
+  align-items: center;
+  gap: 0.4rem;
+}
+
+.checklist li input[type='checkbox'] {
+  width: 18px;
+  height: 18px;
+  accent-color: #14b8a6;
+  flex-shrink: 0;
+}
+
+.checklist .item-text {
+  flex: 1;
+  min-height: 2.2rem !important;
+}
+
+.checklist li.done .item-text {
+  text-decoration: line-through;
+  color: #94a3b8;
+}
+
+.progress {
+  margin: 0;
+  font-size: 0.78rem;
+  color: #0f766e;
+  font-weight: 600;
+}
+
+.mini {
+  width: 1.9rem;
+  height: 1.9rem;
+  flex-shrink: 0;
+  border: 1px solid #e2e8f0;
+  background: #fff;
+  border-radius: 8px;
+  display: grid;
+  place-items: center;
+  font-size: 0.65rem;
+  color: #64748b;
+  cursor: pointer;
+}
+
+.mini:disabled {
+  opacity: 0.35;
+  cursor: default;
+}
+
+.mini.danger {
+  color: #dc2626;
+}
+
+.add-row {
+  display: flex;
+  gap: 0.4rem;
+  margin-top: 0.35rem;
+}
+
+.add-row input {
+  flex: 1;
+}
+
+.add-btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.25rem;
+  border: 1px dashed #5eead4;
+  background: #f0fdfa;
+  color: #0f766e;
+  border-radius: var(--radius);
+  padding: 0 0.8rem;
+  font: inherit;
+  font-size: 0.82rem;
+  font-weight: 700;
+  cursor: pointer;
+  white-space: nowrap;
+}
+
+.participants {
+  display: grid;
+  gap: 0.75rem;
+  padding: 0.75rem;
+  border: 1px dashed #e2e8f0;
+  border-radius: var(--radius);
+}
+
+.p-block {
+  display: grid;
+  gap: 0.35rem;
+}
+
+.p-block > small {
+  color: #94a3b8;
+  font-size: 0.74rem;
+}
+
+.tag {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.25rem;
+  background: #f0fdfa;
+  color: #0f766e;
+  border-radius: 999px;
+  padding: 0.2rem 0.6rem;
+  font-size: 0.78rem;
+  font-weight: 600;
+}
+
+.tag.guest {
+  background: #f1f5f9;
+  color: #334155;
+}
+
+.tag button {
+  border: 0;
+  background: transparent;
+  color: #64748b;
+  cursor: pointer;
+  font: inherit;
+  line-height: 1;
+  padding: 0 0.1rem;
+}
+
+.person-search {
+  position: relative;
+}
+
+.results {
+  position: absolute;
+  inset-inline: 0;
+  top: calc(100% + 4px);
+  z-index: 20;
+  list-style: none;
+  margin: 0;
+  padding: 0.3rem;
+  background: #fff;
+  border: 1px solid #e2e8f0;
+  border-radius: var(--radius);
+  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.14);
+  max-height: 14rem;
+  overflow: auto;
+}
+
+.results button {
+  width: 100%;
+  display: grid;
+  gap: 0.1rem;
+  text-align: start;
+  border: 0;
+  background: none;
+  padding: 0.45rem 0.55rem;
+  border-radius: 8px;
+  font: inherit;
+  cursor: pointer;
+}
+
+.results button:hover {
+  background: #f8fafc;
+}
+
+.results b {
+  font-size: 0.86rem;
+  font-weight: 600;
+}
+
+.results small {
+  color: #94a3b8;
+  font-size: 0.74rem;
+}
+
+@media (min-width: 960px) {
+  .fields-grid {
+    grid-template-columns: 1fr 1fr;
+  }
+
+  .cf.wide {
+    grid-column: 1 / -1;
+  }
+}
+</style>
diff --git a/apps/web/src/components/activities/ActivityFieldsView.vue b/apps/web/src/components/activities/ActivityFieldsView.vue
new file mode 100644
index 0000000..83d9f18
--- /dev/null
+++ b/apps/web/src/components/activities/ActivityFieldsView.vue
@@ -0,0 +1,263 @@
+<script setup lang="ts">
+import { computed } from 'vue';
+import { RouterLink } from 'vue-router';
+import type {
+  ActivityChecklistItem,
+  ActivityFieldDef,
+  ActivityFieldValues,
+  ActivityParticipantsValue,
+  UserSummaryDto,
+} from '@mento/shared';
+import { formatJalaliDay, toFaDigits } from '@/lib/jalali';
+import UiIcon from '@/components/UiIcon.vue';
+
+const props = defineProps<{
+  fields: ActivityFieldDef[];
+  values: ActivityFieldValues;
+  participantUsers?: UserSummaryDto[];
+  /** تیک چک‌لیست قابل تغییر باشد */
+  editable?: boolean;
+  busy?: boolean;
+}>();
+
+const emit = defineEmits<{
+  toggleItem: [key: string, itemId: string, done: boolean];
+}>();
+
+const userName = computed(
+  () => new Map((props.participantUsers ?? []).map((u) => [u.id, u.fullName])),
+);
+
+const filled = computed(() =>
+  props.fields.filter((f) => {
+    const v = props.values[f.key];
+    if (v == null || v === '') return false;
+    if (Array.isArray(v)) return v.length > 0;
+    return true;
+  }),
+);
+
+function text(f: ActivityFieldDef): string {
+  const v = props.values[f.key];
+  if (f.type === 'checkbox') return v === true ? 'بله' : 'خیر';
+  if (f.type === 'date' && typeof v === 'string') {
+    const d = new Date(v);
+    return Number.isNaN(d.getTime()) ? v : formatJalaliDay(d);
+  }
+  if (f.type === 'number' && typeof v === 'number') return toFaDigits(v.toLocaleString('en-US'));
+  if (Array.isArray(v)) return (v as string[]).join('، ');
+  return typeof v === 'string' ? v : '';
+}
+
+function checklist(key: string): ActivityChecklistItem[] {
+  const v = props.values[key];
+  return Array.isArray(v) ? (v as ActivityChecklistItem[]) : [];
+}
+
+function participants(key: string): ActivityParticipantsValue {
+  const v = props.values[key] as ActivityParticipantsValue | undefined;
+  return { userIds: v?.userIds ?? [], people: v?.people ?? [], guests: v?.guests ?? [] };
+}
+
+function safeUrl(raw: string): string | null {
+  try {
+    const u = new URL(/^https?:\/\//i.test(raw) ? raw : `https://${raw}`);
+    return u.protocol === 'http:' || u.protocol === 'https:' ? u.href : null;
+  } catch {
+    return null;
+  }
+}
+</script>
+
+<template>
+  <div v-if="filled.length" class="fv">
+    <div
+      v-for="f in filled"
+      :key="f.key"
+      class="row"
+      :class="{ block: ['textarea', 'checklist', 'participants'].includes(f.type) }"
+    >
+      <span class="label">{{ f.label }}</span>
+
+      <div v-if="f.type === 'checklist'" class="checklist">
+        <p class="progress">
+          {{ toFaDigits(checklist(f.key).filter((x) => x.done).length) }} از
+          {{ toFaDigits(checklist(f.key).length) }} انجام شده
+          <i
+            class="bar"
+            :style="{
+              '--p': `${(checklist(f.key).filter((x) => x.done).length / Math.max(1, checklist(f.key).length)) * 100}%`,
+            }"
+          />
+        </p>
+        <label v-for="it in checklist(f.key)" :key="it.id" class="item" :class="{ done: it.done }">
+          <input
+            type="checkbox"
+            :checked="it.done"
+            :disabled="!editable || busy"
+            @change="emit('toggleItem', f.key, it.id, ($event.target as HTMLInputElement).checked)"
+          />
+          <span>{{ it.text }}</span>
+        </label>
+      </div>
+
+      <div v-else-if="f.type === 'participants'" class="people">
+        <span v-for="uid in participants(f.key).userIds" :key="uid" class="tag user">
+          <UiIcon name="user" :size="12" />
+          {{ userName.get(uid) || 'همکار' }}
+        </span>
+        <RouterLink
+          v-for="p in participants(f.key).people"
+          :key="p.id"
+          class="tag person"
+          :to="{ name: 'person-detail', params: { id: p.id } }"
+        >
+          <UiIcon name="users" :size="12" />
+          {{ p.name }}
+        </RouterLink>
+        <span v-for="g in participants(f.key).guests" :key="g" class="tag guest">{{ g }}</span>
+      </div>
+
+      <a
+        v-else-if="f.type === 'url' && safeUrl(text(f))"
+        class="value link"
+        :href="safeUrl(text(f))!"
+        target="_blank"
+        rel="noopener noreferrer"
+        dir="ltr"
+      >
+        {{ text(f) }}
+      </a>
+
+      <p v-else class="value" :class="{ multiline: f.type === 'textarea' }">{{ text(f) }}</p>
+    </div>
+  </div>
+  <p v-else class="empty">اطلاعاتی برای این نوع فعالیت ثبت نشده است.</p>
+</template>
+
+<style scoped>
+.fv {
+  display: grid;
+}
+
+.row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 0.8rem;
+  padding: 0.72rem 0;
+  border-top: 1px solid #f1f5f9;
+}
+
+.row.block {
+  display: grid;
+  gap: 0.45rem;
+  justify-content: stretch;
+}
+
+.label {
+  color: #64748b;
+  font-size: 0.86rem;
+}
+
+.value {
+  margin: 0;
+  font-weight: 700;
+  text-align: start;
+  word-break: break-word;
+}
+
+.value.multiline {
+  font-weight: 500;
+  white-space: pre-wrap;
+  line-height: 1.9;
+  color: #334155;
+}
+
+.value.link {
+  color: #0f766e;
+  text-decoration: none;
+}
+
+.checklist {
+  display: grid;
+  gap: 0.35rem;
+}
+
+.progress {
+  margin: 0 0 0.2rem;
+  display: grid;
+  gap: 0.3rem;
+  font-size: 0.78rem;
+  color: #0f766e;
+  font-weight: 600;
+}
+
+.bar {
+  display: block;
+  height: 6px;
+  border-radius: 999px;
+  background: linear-gradient(90deg, #14b8a6 var(--p), #e2e8f0 var(--p));
+}
+
+.item {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.45rem 0.55rem;
+  border-radius: 8px;
+  background: #f8fafc;
+  cursor: pointer;
+  font-size: 0.9rem;
+}
+
+.item input {
+  width: 18px;
+  height: 18px;
+  accent-color: #14b8a6;
+  flex-shrink: 0;
+}
+
+.item.done span {
+  text-decoration: line-through;
+  color: #94a3b8;
+}
+
+.people {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.35rem;
+}
+
+.tag {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.25rem;
+  border-radius: 999px;
+  padding: 0.22rem 0.65rem;
+  font-size: 0.8rem;
+  font-weight: 600;
+  text-decoration: none;
+}
+
+.tag.user {
+  background: #f0fdfa;
+  color: #0f766e;
+}
+
+.tag.person {
+  background: #eff6ff;
+  color: #1d4ed8;
+}
+
+.tag.guest {
+  background: #f1f5f9;
+  color: #334155;
+}
+
+.empty {
+  margin: 0.4rem 0 0;
+  color: #94a3b8;
+  font-size: 0.86rem;
+}
+</style>
diff --git a/apps/web/src/components/activities/ActivityTypesManager.vue b/apps/web/src/components/activities/ActivityTypesManager.vue
new file mode 100644
index 0000000..3fb07f3
--- /dev/null
+++ b/apps/web/src/components/activities/ActivityTypesManager.vue
@@ -0,0 +1,821 @@
+<script setup lang="ts">
+import { computed, ref, watch } from 'vue';
+import axios from 'axios';
+import type {
+  ActivityFieldDef,
+  ActivityFieldType,
+  ActivityStageColor,
+  ActivityType,
+  ActivityTypeDefDto,
+  ActivityTypeIcon,
+} from '@mento/shared';
+import {
+  ACTIVITY_FIELD_TYPE_LABELS,
+  ACTIVITY_FIELD_TYPES,
+  ACTIVITY_FIELD_TYPES_WITH_OPTIONS,
+  ACTIVITY_STAGE_COLOR_LABELS,
+  ACTIVITY_STAGE_COLORS,
+  ACTIVITY_TYPE_ICONS,
+  ACTIVITY_TYPE_LABELS,
+} from '@mento/shared';
+import { api } from '@/lib/api';
+import { toFaDigits } from '@/lib/jalali';
+import {
+  ACTIVITY_TYPE_ICON_LABELS,
+  newFieldKey,
+  typeColorStyle,
+  useActivityTypes,
+} from '@/lib/activity-types';
+import { UiButton, UiModal } from '@/components/ui';
+import UiIcon from '@/components/UiIcon.vue';
+
+const props = defineProps<{ open: boolean }>();
+const emit = defineEmits<{ close: []; changed: [] }>();
+
+const BASE_TYPES: ActivityType[] = ['call', 'meeting', 'task', 'note'];
+
+type FieldDraft = ActivityFieldDef & { optionsText: string };
+type Draft = {
+  id: string | null;
+  name: string;
+  baseType: ActivityType;
+  icon: ActivityTypeIcon;
+  color: ActivityStageColor;
+  isActive: boolean;
+  isSystem: boolean;
+  fields: FieldDraft[];
+};
+
+const { types, load } = useActivityTypes();
+const selectedId = ref<string | 'new' | null>(null);
+const draft = ref<Draft | null>(null);
+const savedSnapshot = ref('');
+const busy = ref('');
+const error = ref('');
+const notice = ref('');
+
+function toDraft(t: ActivityTypeDefDto | null): Draft {
+  if (!t) {
+    return {
+      id: null,
+      name: '',
+      baseType: 'task',
+      icon: 'check',
+      color: 'blue',
+      isActive: true,
+      isSystem: false,
+      fields: [],
+    };
+  }
+  return {
+    id: t.id,
+    name: t.name,
+    baseType: t.baseType,
+    icon: t.icon,
+    color: t.color,
+    isActive: t.isActive,
+    isSystem: t.isSystem,
+    fields: t.fields.map((f) => ({ ...f, optionsText: (f.options ?? []).join('\n') })),
+  };
+}
+
+function snapshot(d: Draft | null) {
+  return JSON.stringify(d);
+}
+
+const dirty = computed(() => snapshot(draft.value) !== savedSnapshot.value);
+
+function select(id: string | 'new') {
+  if (dirty.value && draft.value && !window.confirm('تغییرات ذخیره نشده از بین می‌رود. ادامه می‌دهید؟')) {
+    return;
+  }
+  selectedId.value = id;
+  draft.value = toDraft(id === 'new' ? null : (types.value.find((t) => t.id === id) ?? null));
+  savedSnapshot.value = snapshot(draft.value);
+  error.value = '';
+  notice.value = '';
+}
+
+watch(
+  () => props.open,
+  async (open) => {
+    if (!open) return;
+    error.value = '';
+    notice.value = '';
+    await load(true);
+    const first = types.value[0];
+    selectedId.value = null;
+    draft.value = null;
+    if (first) select(first.id);
+  },
+  { immediate: true },
+);
+
+function apiMessage(e: unknown, fallback: string) {
+  if (axios.isAxiosError(e)) {
+    const msg = (e.response?.data as { message?: string | string[] } | undefined)?.message;
+    if (Array.isArray(msg)) return msg[0] ?? fallback;
+    if (typeof msg === 'string' && msg) return msg;
+  }
+  return fallback;
+}
+
+function addField() {
+  if (!draft.value) return;
+  draft.value.fields.push({
+    key: newFieldKey(),
+    label: '',
+    type: 'text',
+    required: false,
+    placeholder: '',
+    optionsText: '',
+  });
+}
+
+function moveField(index: number, dir: -1 | 1) {
+  const list = draft.value?.fields;
+  if (!list) return;
+  const to = index + dir;
+  if (to < 0 || to >= list.length) return;
+  const [f] = list.splice(index, 1);
+  list.splice(to, 0, f!);
+}
+
+function removeField(index: number) {
+  const f = draft.value?.fields[index];
+  if (!f) return;
+  if (
+    f.label.trim() &&
+    !window.confirm(
+      `فیلد «${f.label}» حذف شود؟ مقادیر ثبت‌شدهٔ آن در فعالیت‌های قبلی دیگر نمایش داده نمی‌شود.`,
+    )
+  ) {
+    return;
+  }
+  draft.value!.fields.splice(index, 1);
+}
+
+function needsOptions(type: ActivityFieldType) {
+  return ACTIVITY_FIELD_TYPES_WITH_OPTIONS.includes(type);
+}
+
+function payloadFields(d: Draft): ActivityFieldDef[] {
+  return d.fields.map((f) => {
+    const out: ActivityFieldDef = { key: f.key, label: f.label.trim(), type: f.type };
+    if (needsOptions(f.type)) {
+      out.options = f.optionsText
+        .split(/\n|،|,/)
+        .map((o) => o.trim())
+        .filter(Boolean);
+    }
+    if (f.required) out.required = true;
+    if (f.placeholder?.trim()) out.placeholder = f.placeholder.trim();
+    return out;
+  });
+}
+
+function validate(d: Draft): string {
+  if (!d.name.trim()) return 'نام نوع فعالیت را بنویسید.';
+  const empty = d.fields.findIndex((f) => !f.label.trim());
+  if (empty >= 0) return `عنوان فیلد ${toFaDigits(empty + 1)} را بنویسید.`;
+  const noOpts = d.fields.find(
+    (f) => needsOptions(f.type) && !f.optionsText.split(/\n|،|,/).some((o) => o.trim()),
+  );
+  if (noOpts) return `برای فیلد «${noOpts.label}» حداقل یک گزینه بنویسید.`;
+  return '';
+}
+
+async function save() {
+  const d = draft.value;
+  if (!d) return;
+  const msg = validate(d);
+  if (msg) {
+    error.value = msg;
+    return;
+  }
+  busy.value = 'save';
+  error.value = '';
+  notice.value = '';
+  const body = {
+    name: d.name.trim(),
+    icon: d.icon,
+    color: d.color,
+    fields: payloadFields(d),
+    ...(d.isSystem ? {} : { baseType: d.baseType, ...(d.id ? { isActive: d.isActive } : {}) }),
+  };
+  try {
+    if (d.id) {
+      const prev = types.value.find((t) => t.id === d.id);
+      if (
+        prev &&
+        !d.isSystem &&
+        prev.baseType !== d.baseType &&
+        !window.confirm(
+          'با تغییر نوع پایه، فعالیت‌های قبلی این نوع هم در گزارش‌ها با نوع پایهٔ جدید شمرده می‌شوند. ادامه می‌دهید؟',
+        )
+      ) {
+        busy.value = '';
+        return;
+      }
+      await api.patch(`/activities/types/${d.id}`, body);
+    } else {
+      const { data } = await api.post<ActivityTypeDefDto>('/activities/types', body);
+      d.id = data.id;
+    }
+    await load(true);
+    const savedId = d.id!;
+    selectedId.value = savedId;
+    draft.value = toDraft(types.value.find((t) => t.id === savedId) ?? null);
+    savedSnapshot.value = snapshot(draft.value);
+    notice.value = 'ذخیره شد.';
+    emit('changed');
+  } catch (e) {
+    error.value = apiMessage(e, 'ذخیرهٔ نوع فعالیت ناموفق بود.');
+  } finally {
+    busy.value = '';
+  }
+}
+
+async function remove() {
+  const d = draft.value;
+  if (!d?.id || d.isSystem) return;
+  if (
+    !window.confirm(
+      `نوع «${d.name}» حذف شود؟ فعالیت‌های این نوع به نوع اصلی «${ACTIVITY_TYPE_LABELS[d.baseType]}» برمی‌گردند. برای نگه داشتن سوابق، می‌توانید به‌جای حذف آن را غیرفعال کنید.`,
+    )
+  ) {
+    return;
+  }
+  busy.value = 'remove';
+  error.value = '';
+  try {
+    await api.delete(`/activities/types/${d.id}`);
+    await load(true);
+    savedSnapshot.value = snapshot(null);
+    draft.value = null;
+    const first = types.value[0];
+    if (first) select(first.id);
+    emit('changed');
+  } catch (e) {
+    error.value = apiMessage(e, 'حذف نوع فعالیت ناموفق بود.');
+  } finally {
+    busy.value = '';
+  }
+}
+
+async function moveType(index: number, dir: -1 | 1) {
+  const ids = types.value.map((t) => t.id);
+  const to = index + dir;
+  if (to < 0 || to >= ids.length) return;
+  const [moved] = ids.splice(index, 1);
+  ids.splice(to, 0, moved!);
+  busy.value = 'order';
+  error.value = '';
+  try {
+    await api.patch('/activities/types/reorder', { typeIds: ids });
+    await load(true);
+    emit('changed');
+  } catch (e) {
+    error.value = apiMessage(e, 'جابه‌جایی ناموفق بود.');
+  } finally {
+    busy.value = '';
+  }
+}
+
+function close() {
+  if (dirty.value && draft.value && !window.confirm('تغییرات ذخیره نشده از بین می‌رود. بستن؟')) return;
+  emit('close');
+}
+</script>
+
+<template>
+  <UiModal :open="open" title="انواع فعالیت و فیلدهای اختصاصی" @close="close">
+    <div class="mgr">
+      <p class="hint">
+        برای هر نوع فعالیت فیلدهای مخصوص خودش را تعریف کنید؛ مثلاً «موضوع جلسه» و «شرکت‌کنندگان» برای جلسه
+        یا «لیست کارها» برای وظیفه. «نوع پایه» مشخص می‌کند فعالیت در گزارش‌ها جزو تماس، جلسه، وظیفه یا پیام
+        شمرده شود.
+      </p>
+
+      <div class="layout">
+        <aside class="list">
+          <div
+            v-for="(t, index) in types"
+            :key="t.id"
+            class="type-row"
+            :class="{ on: selectedId === t.id, off: !t.isActive }"
+          >
+            <button type="button" class="pick" @click="select(t.id)">
+              <span class="ico" :style="typeColorStyle(t.color)">
+                <UiIcon :name="t.icon" :size="14" />
+              </span>
+              <span class="txt">
+                <b>{{ t.name }}</b>
+                <small>
+                  {{ ACTIVITY_TYPE_LABELS[t.baseType] }} · {{ toFaDigits(t.fields.length) }} فیلد
+                  <template v-if="!t.isActive"> · غیرفعال</template>
+                </small>
+              </span>
+            </button>
+            <div class="order">
+              <button
+                type="button"
+                :disabled="index === 0 || Boolean(busy)"
+                aria-label="انتقال به بالا"
+                @click="moveType(index, -1)"
+              >
+                ▲
+              </button>
+              <button
+                type="button"
+                :disabled="index === types.length - 1 || Boolean(busy)"
+                aria-label="انتقال به پایین"
+                @click="moveType(index, 1)"
+              >
+                ▼
+              </button>
+            </div>
+          </div>
+          <button type="button" class="add-type" :class="{ on: selectedId === 'new' }" @click="select('new')">
+            <UiIcon name="plus" :size="15" />
+            نوع فعالیت جدید
+          </button>
+        </aside>
+
+        <section v-if="draft" class="editor">
+          <div class="grid">
+            <label class="f">
+              <span>نام نوع</span>
+              <input v-model="draft.name" maxlength="60" placeholder="مثلاً: بازدید حضوری" />
+            </label>
+            <label class="f">
+              <span>نوع پایه (برای گزارش‌ها)</span>
+              <select v-model="draft.baseType" :disabled="draft.isSystem">
+                <option v-for="b in BASE_TYPES" :key="b" :value="b">{{ ACTIVITY_TYPE_LABELS[b] }}</option>
+              </select>
+            </label>
+            <label class="f">
+              <span>رنگ</span>
+              <select v-model="draft.color">
+                <option v-for="c in ACTIVITY_STAGE_COLORS" :key="c" :value="c">
+                  {{ ACTIVITY_STAGE_COLOR_LABELS[c] }}
+                </option>
+              </select>
+            </label>
+            <label v-if="!draft.isSystem && draft.id" class="f toggle">
+              <input v-model="draft.isActive" type="checkbox" />
+              <span>فعال (در فرم فعالیت قابل انتخاب باشد)</span>
+            </label>
+          </div>
+
+          <div class="f">
+            <span>آیکون</span>
+            <div class="icons">
+              <button
+                v-for="ic in ACTIVITY_TYPE_ICONS"
+                :key="ic"
+                type="button"
+                :class="{ on: draft.icon === ic }"
+                :style="draft.icon === ic ? typeColorStyle(draft.color) : undefined"
+                :title="ACTIVITY_TYPE_ICON_LABELS[ic]"
+                :aria-label="ACTIVITY_TYPE_ICON_LABELS[ic]"
+                @click="draft.icon = ic"
+              >
+                <UiIcon :name="ic" :size="16" />
+              </button>
+            </div>
+          </div>
+
+          <p v-if="draft.isSystem" class="sys-note">
+            این نوع اصلی است: حذف و غیرفعال نمی‌شود، ولی نام، ظاهر و فیلدهایش قابل تغییر است.
+          </p>
+
+          <div class="fields-head">
+            <strong>فیلدهای اختصاصی</strong>
+            <small>{{ toFaDigits(draft.fields.length) }} فیلد</small>
+          </div>
+          <p v-if="!draft.fields.length" class="empty">
+            هنوز فیلدی تعریف نشده؛ فعالیت‌های این نوع فقط فیلدهای عمومی (عنوان، زمان، مسئول، مشتری…) را دارند.
+          </p>
+
+          <div v-for="(f, index) in draft.fields" :key="f.key" class="field-card">
+            <div class="field-top">
+              <span class="num">{{ toFaDigits(index + 1) }}</span>
+              <input v-model="f.label" class="label-input" maxlength="80" placeholder="عنوان فیلد (مثلاً: موضوع جلسه)" />
+              <select v-model="f.type" aria-label="نوع فیلد">
+                <option v-for="ft in ACTIVITY_FIELD_TYPES" :key="ft" :value="ft">
+                  {{ ACTIVITY_FIELD_TYPE_LABELS[ft] }}
+                </option>
+              </select>
+              <div class="field-actions">
+                <button type="button" :disabled="index === 0" aria-label="بالا" @click="moveField(index, -1)">▲</button>
+                <button
+                  type="button"
+                  :disabled="index === draft.fields.length - 1"
+                  aria-label="پایین"
+                  @click="moveField(index, 1)"
+                >
+                  ▼
+                </button>
+                <button type="button" class="danger" aria-label="حذف فیلد" @click="removeField(index)">
+                  <UiIcon name="trash" :size="14" />
+                </button>
+              </div>
+            </div>
+            <div class="field-extra">
+              <textarea
+                v-if="needsOptions(f.type)"
+                v-model="f.optionsText"
+                rows="3"
+                placeholder="گزینه‌ها — هر گزینه در یک خط"
+              />
+              <input
+                v-if="!['checkbox', 'participants', 'select', 'multiselect', 'date'].includes(f.type)"
+                v-model="f.placeholder"
+                maxlength="200"
+                placeholder="متن راهنما داخل فیلد (اختیاری)"
+              />
+              <label v-if="f.type !== 'checkbox'" class="req">
+                <input v-model="f.required" type="checkbox" />
+                اجباری
+              </label>
+              <small v-if="f.type === 'participants'" class="tip">
+                همکارانی که به‌عنوان شرکت‌کننده انتخاب شوند، این فعالیت را در لیست خودشان هم می‌بینند و اعلان
+                دریافت می‌کنند.
+              </small>
+            </div>
+          </div>
+
+          <button type="button" class="add-field" @click="addField">
+            <UiIcon name="plus" :size="15" />
+            افزودن فیلد
+          </button>
+
+          <p v-if="error" class="error">{{ error }}</p>
+          <p v-else-if="notice" class="notice">{{ notice }}</p>
+
+          <div class="actions">
+            <UiButton
+              variant="primary"
+              type="button"
+              :disabled="!dirty || Boolean(busy)"
+              :loading="busy === 'save'"
+              @click="save"
+            >
+              {{ draft.id ? 'ذخیرهٔ تغییرات' : 'ساخت نوع فعالیت' }}
+            </UiButton>
+            <UiButton
+              v-if="draft.id && !draft.isSystem"
+              variant="ghost"
+              type="button"
+              :disabled="Boolean(busy)"
+              :loading="busy === 'remove'"
+              @click="remove"
+            >
+              <UiIcon name="trash" :size="15" />
+              حذف نوع
+            </UiButton>
+          </div>
+        </section>
+        <p v-else class="empty">یک نوع فعالیت را انتخاب کنید.</p>
+      </div>
+    </div>
+  </UiModal>
+</template>
+
+<style scoped>
+.mgr {
+  display: grid;
+  gap: 0.9rem;
+}
+
+.hint {
+  margin: 0;
+  color: #64748b;
+  font-size: 0.84rem;
+  line-height: 1.8;
+}
+
+.layout {
+  display: grid;
+  gap: 1rem;
+}
+
+.list {
+  display: grid;
+  gap: 0.4rem;
+  align-content: start;
+}
+
+.type-row {
+  display: flex;
+  align-items: center;
+  gap: 0.3rem;
+  border: 1px solid var(--line);
+  border-radius: var(--radius);
+  background: #fff;
+}
+
+.type-row.on {
+  border-color: #5eead4;
+  background: #f0fdfa;
+}
+
+.type-row.off {
+  opacity: 0.6;
+}
+
+.pick {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  align-items: center;
+  gap: 0.55rem;
+  border: 0;
+  background: none;
+  padding: 0.5rem 0.6rem;
+  font: inherit;
+  text-align: start;
+  cursor: pointer;
+}
+
+.ico {
+  width: 30px;
+  height: 30px;
+  border-radius: 999px;
+  display: grid;
+  place-items: center;
+  flex-shrink: 0;
+}
+
+.txt {
+  display: grid;
+  min-width: 0;
+}
+
+.txt b {
+  font-size: 0.88rem;
+  font-weight: 600;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.txt small {
+  color: #94a3b8;
+  font-size: 0.72rem;
+}
+
+.order {
+  display: grid;
+  padding-inline-end: 0.3rem;
+}
+
+.order button,
+.field-actions button {
+  border: 0;
+  background: none;
+  color: #94a3b8;
+  font-size: 0.62rem;
+  cursor: pointer;
+  padding: 0.1rem 0.3rem;
+}
+
+.order button:disabled,
+.field-actions button:disabled {
+  opacity: 0.3;
+  cursor: default;
+}
+
+.add-type,
+.add-field {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  gap: 0.35rem;
+  min-height: var(--control-h);
+  border: 1px dashed #5eead4;
+  background: #f0fdfa;
+  color: #0f766e;
+  border-radius: var(--radius);
+  font: inherit;
+  font-weight: 700;
+  font-size: 0.86rem;
+  cursor: pointer;
+}
+
+.add-type.on {
+  border-style: solid;
+}
+
+.editor {
+  display: grid;
+  gap: 0.8rem;
+  align-content: start;
+  min-width: 0;
+}
+
+.grid {
+  display: grid;
+  gap: 0.65rem;
+}
+
+.f {
+  display: grid;
+  gap: 0.3rem;
+  min-width: 0;
+}
+
+.f > span {
+  color: #64748b;
+  font-size: 0.78rem;
+  font-weight: 600;
+}
+
+.f.toggle {
+  display: flex;
+  align-items: center;
+  gap: 0.45rem;
+  align-self: end;
+  min-height: var(--control-h);
+}
+
+.f.toggle span {
+  color: #334155;
+  font-weight: 500;
+}
+
+input:not([type='checkbox']),
+select,
+textarea {
+  min-height: var(--control-h);
+  padding: 0 0.65rem;
+  border: 1px solid var(--line);
+  border-radius: var(--radius);
+  background: #fff;
+  font: inherit;
+  font-size: 0.86rem;
+  min-width: 0;
+  width: 100%;
+  box-sizing: border-box;
+}
+
+textarea {
+  padding: 0.5rem 0.65rem;
+  resize: vertical;
+}
+
+select:disabled {
+  background: #f8fafc;
+  color: #94a3b8;
+}
+
+input[type='checkbox'] {
+  accent-color: #14b8a6;
+  width: 16px;
+  height: 16px;
+}
+
+.icons {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.35rem;
+}
+
+.icons button {
+  width: 2.2rem;
+  height: 2.2rem;
+  display: grid;
+  place-items: center;
+  border: 1px solid var(--line);
+  border-radius: 10px;
+  background: #fff;
+  color: #64748b;
+  cursor: pointer;
+}
+
+.icons button.on {
+  border-color: currentColor;
+}
+
+.sys-note {
+  margin: 0;
+  padding: 0.5rem 0.7rem;
+  border-radius: var(--radius);
+  background: #f8fafc;
+  color: #475569;
+  font-size: 0.8rem;
+}
+
+.fields-head {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  padding-top: 0.6rem;
+  border-top: 1px solid var(--line);
+}
+
+.fields-head small {
+  color: #94a3b8;
+}
+
+.empty {
+  margin: 0;
+  color: #94a3b8;
+  font-size: 0.84rem;
+}
+
+.field-card {
+  display: grid;
+  gap: 0.5rem;
+  padding: 0.6rem;
+  border: 1px solid var(--line);
+  border-radius: var(--radius);
+  background: #fcfdfe;
+}
+
+.field-top {
+  display: grid;
+  grid-template-columns: 1.4rem minmax(0, 1fr) 10rem auto;
+  gap: 0.45rem;
+  align-items: center;
+}
+
+.num {
+  color: #94a3b8;
+  font-size: 0.8rem;
+  text-align: center;
+}
+
+.field-actions {
+  display: flex;
+  align-items: center;
+}
+
+.field-actions .danger {
+  color: #dc2626;
+  font-size: inherit;
+}
+
+.field-extra {
+  display: grid;
+  gap: 0.45rem;
+  padding-inline-start: 1.85rem;
+}
+
+.req {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.35rem;
+  font-size: 0.82rem;
+  color: #334155;
+}
+
+.tip {
+  color: #0f766e;
+  font-size: 0.75rem;
+  line-height: 1.7;
+}
+
+.error {
+  margin: 0;
+  color: #b91c1c;
+}
+
+.notice {
+  margin: 0;
+  color: #0f766e;
+}
+
+.actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.5rem;
+  position: sticky;
+  bottom: 0;
+  padding: 0.6rem 0 0.2rem;
+  background: #fff;
+}
+
+@media (min-width: 760px) {
+  .layout {
+    grid-template-columns: 14rem minmax(0, 1fr);
+    align-items: start;
+  }
+
+  .grid {
+    grid-template-columns: 1fr 1fr;
+  }
+}
+
+@media (max-width: 560px) {
+  .field-top {
+    grid-template-columns: 1.4rem minmax(0, 1fr) auto;
+  }
+
+  .field-top select {
+    grid-column: 2 / -1;
+    grid-row: 2;
+  }
+}
+</style>
diff --git a/apps/web/src/lib/activity-types.ts b/apps/web/src/lib/activity-types.ts
new file mode 100644
index 0000000..0b3fdd1
--- /dev/null
+++ b/apps/web/src/lib/activity-types.ts
@@ -0,0 +1,111 @@
+import { computed, ref } from 'vue';
+import type {
+  ActivityDto,
+  ActivityStageColor,
+  ActivityType,
+  ActivityTypeDefDto,
+  ActivityTypeIcon,
+} from '@mento/shared';
+import { ACTIVITY_TYPE_LABELS } from '@mento/shared';
+import { api } from '@/lib/api';
+import { PIPELINE_ACCENT } from '@/lib/pipeline-board';
+
+export const BASE_TYPE_ICON: Record<ActivityType, ActivityTypeIcon> = {
+  call: 'phone',
+  meeting: 'users',
+  task: 'check',
+  note: 'chat',
+};
+
+const BASE_TYPE_COLOR: Record<ActivityType, ActivityStageColor> = {
+  call: 'green',
+  meeting: 'purple',
+  task: 'orange',
+  note: 'blue',
+};
+
+export const ACTIVITY_TYPE_ICON_LABELS: Record<ActivityTypeIcon, string> = {
+  phone: 'تلفن',
+  users: 'جمع',
+  check: 'تیک',
+  chat: 'گفتگو',
+  mail: 'ایمیل',
+  building: 'ساختمان',
+  calendar: 'تقویم',
+  star: 'ستاره',
+  flag: 'پرچم',
+  briefcase: 'کیف',
+  document: 'سند',
+  target: 'هدف',
+  truck: 'ارسال',
+  send: 'ارسال پیام',
+  megaphone: 'بلندگو',
+  pin: 'مکان',
+  bell: 'زنگ',
+  sparkle: 'درخشش',
+};
+
+const types = ref<ActivityTypeDefDto[]>([]);
+const loaded = ref(false);
+let pending: Promise<void> | null = null;
+
+/** انواع فعالیت سازمان (کش مشترک بین صفحات) */
+export function useActivityTypes() {
+  async function load(force = false): Promise<void> {
+    if (loaded.value && !force) return;
+    if (pending && !force) return pending;
+    pending = api
+      .get<ActivityTypeDefDto[]>('/activities/types')
+      .then(({ data }) => {
+        types.value = data;
+        loaded.value = true;
+      })
+      .catch(() => {
+        if (!loaded.value) types.value = [];
+      })
+      .finally(() => {
+        pending = null;
+      });
+    return pending;
+  }
+
+  const active = computed(() => types.value.filter((t) => t.isActive));
+  const byId = computed(() => new Map(types.value.map((t) => [t.id, t])));
+  /** نوع اصلی هر نوع پایه */
+  const systemOf = computed(() => {
+    const out: Partial<Record<ActivityType, ActivityTypeDefDto>> = {};
+    for (const t of types.value) if (t.isSystem && !out[t.baseType]) out[t.baseType] = t;
+    return out;
+  });
+
+  /** تعریف کامل نوع مؤثر یک فعالیت */
+  function defOf(a: Pick<ActivityDto, 'type' | 'typeDef'>): ActivityTypeDefDto | null {
+    if (a.typeDef?.id) return byId.value.get(a.typeDef.id) ?? null;
+    return systemOf.value[a.type] ?? null;
+  }
+
+  return { types, active, byId, systemOf, loaded, load, defOf };
+}
+
+export type TypeView = { name: string; icon: ActivityTypeIcon; color: ActivityStageColor };
+
+/** برچسب/آیکون/رنگ قابل نمایش برای یک فعالیت */
+export function activityTypeView(a: Pick<ActivityDto, 'type' | 'typeDef'>): TypeView {
+  if (a.typeDef) {
+    return { name: a.typeDef.name, icon: a.typeDef.icon, color: a.typeDef.color };
+  }
+  return {
+    name: ACTIVITY_TYPE_LABELS[a.type],
+    icon: BASE_TYPE_ICON[a.type],
+    color: BASE_TYPE_COLOR[a.type],
+  };
+}
+
+export function typeColorStyle(color: ActivityStageColor) {
+  const c = PIPELINE_ACCENT[color] ?? PIPELINE_ACCENT.green;
+  return { background: c.soft, color: c.text };
+}
+
+export function newFieldKey(): string {
+  return `f_${Math.random().toString(36).slice(2, 10)}`;
+}
diff --git a/apps/web/src/views/ActivitiesView.vue b/apps/web/src/views/ActivitiesView.vue
index b06645a..e1c4603 100644
--- a/apps/web/src/views/ActivitiesView.vue
+++ b/apps/web/src/views/ActivitiesView.vue
@@ -23,7 +23,9 @@ import UiSegmented from '@/components/ui/UiSegmented.vue';
 import ExcelImportFlow from '@/components/ExcelImportFlow.vue';
 import ActivitiesKanban from '@/components/activities/ActivitiesKanban.vue';
 import ActivityStagesManager from '@/components/activities/ActivityStagesManager.vue';
+import ActivityTypesManager from '@/components/activities/ActivityTypesManager.vue';
 import { PIPELINE_ACCENT } from '@/lib/pipeline-board';
+import { activityTypeView, typeColorStyle, useActivityTypes } from '@/lib/activity-types';
 import {
   ACTIVITY_EXCEL_ALIASES,
   ACTIVITY_EXCEL_FIELDS,
@@ -56,10 +58,11 @@ import TableColumnsMenu from '@/components/TableColumnsMenu.vue';
 
 const ACT_TABLE_KEY = 'activities';
 const ACT_COLUMNS = [
-  { key: 'title', label: 'مشتری / عنوان فعالیت', width: 'minmax(0, 2.2fr)' },
+  { key: 'title', label: 'عنوان فعالیت', width: 'minmax(0, 2fr)' },
+  { key: 'who', label: 'کارشناس', width: 'minmax(7rem, 0.9fr)' },
+  { key: 'customer', label: 'مشتری', width: 'minmax(7rem, 1fr)' },
   { key: 'type', label: 'نوع فعالیت', width: '7.6rem' },
   { key: 'when', label: 'زمان شروع', width: '7.2rem' },
-  { key: 'who', label: 'کارشناس', width: '8.4rem' },
   { key: 'status', label: 'وضعیت', width: '8.6rem' },
 ] as const;
 type ActColKey = (typeof ACT_COLUMNS)[number]['key'];
@@ -80,7 +83,8 @@ const actGridStyle = computed(() => ({
   ].join(' '),
 }));
 
-type TypeFilter = 'all' | ActivityType;
+/** 'all' یا شناسهٔ نوع فعالیت */
+type TypeFilter = string;
 type StatusFilter = 'all' | ActivityStatus;
 type UiStatus = 'done' | 'progress' | 'planned' | 'overdue' | 'canceled';
 type DeskScope = 'mine' | 'team';
@@ -106,14 +110,6 @@ const DESK_TABS: Array<{ key: DeskScope; label: string }> = [
   { key: 'team', label: 'همه تیم' },
 ];
 
-const TYPE_FILTERS: Array<{ key: TypeFilter; label: string }> = [
-  { key: 'all', label: 'همه انواع' },
-  { key: 'call', label: 'تماس' },
-  { key: 'meeting', label: 'جلسه' },
-  { key: 'task', label: 'وظیفه' },
-  { key: 'note', label: 'پیام' },
-];
-
 const STATUS_FILTERS: Array<{ key: StatusFilter; label: string }> = [
   { key: 'all', label: 'همه وضعیت‌ها' },
   { key: 'open', label: 'باز / انجام‌نشده' },
@@ -155,6 +151,13 @@ const filter = computed<TimeFilter>(() => {
 
 const stages = ref<ActivityStageDto[]>([]);
 const stagesManagerOpen = ref(false);
+const typesManagerOpen = ref(false);
+
+async function onTypesChanged() {
+  await activityTypes.load(true);
+  kanbanReload.value += 1;
+  await refreshAll();
+}
 const kanbanReload = ref(0);
 const stageCounts = ref<ActivityStageCountsDto>({ counts: {}, total: 0 });
 
@@ -185,9 +188,25 @@ const ideasOpen = ref(false);
 const ACTIVITY_TYPES: ActivityType[] = ['call', 'meeting', 'task', 'note'];
 const ACTIVITY_STATUSES: ActivityStatus[] = ['open', 'done', 'canceled'];
 
+const activityTypes = useActivityTypes();
+const TYPE_FILTERS = computed<Array<{ key: TypeFilter; label: string }>>(() => [
+  { key: 'all', label: 'همه انواع' },
+  ...activityTypes.types.value
+    .filter((t) => t.isActive || t.id === typeFilter.value)
+    .map((t) => ({ key: t.id, label: t.name })),
+]);
+
+/** پارامتر قدیمی ?type=call → نوع اصلیِ همان نوع پایه */
+const legacyBaseType = computed<ActivityType | null>(() => {
+  const value = typeof route.query.type === 'string' ? route.query.type : '';
+  return ACTIVITY_TYPES.includes(value as ActivityType) ? (value as ActivityType) : null;
+});
+
 const typeFilter = computed<TypeFilter>(() => {
-  const value = typeof route.query.type === 'string' ? route.query.type : 'all';
-  return ACTIVITY_TYPES.includes(value as ActivityType) ? (value as ActivityType) : 'all';
+  const id = typeof route.query.typeDefId === 'string' ? route.query.typeDefId.trim() : '';
+  if (id) return id;
+  if (legacyBaseType.value) return activityTypes.systemOf.value[legacyBaseType.value]?.id ?? 'all';
+  return 'all';
 });
 
 const statusFilter = computed<StatusFilter>(() => {
@@ -217,20 +236,6 @@ const counts = ref<Record<TimeFilter, number>>({
   all: 0,
 });
 
-const typeLabel: Record<ActivityType, string> = {
-  call: 'تماس',
-  meeting: 'جلسه',
-  task: 'وظیفه',
-  note: 'پیام',
-};
-
-const typeIcon: Record<ActivityType, 'phone' | 'users' | 'check' | 'chat'> = {
-  call: 'phone',
-  meeting: 'users',
-  task: 'check',
-  note: 'chat',
-};
-
 const statusLabel: Record<UiStatus, string> = {
   done: 'انجام شد',
   progress: 'در حال انجام',
@@ -263,7 +268,13 @@ const sharedParams = computed<Record<string, string | undefined>>(() => ({
   filter: filter.value,
   q: typeof route.query.q === 'string' && route.query.q.trim() ? route.query.q.trim() : undefined,
   desk: showDeskTabs.value ? desk.value : undefined,
-  type: typeFilter.value === 'all' ? undefined : typeFilter.value,
+  typeDefId: typeof route.query.typeDefId === 'string' && route.query.typeDefId.trim()
+    ? route.query.typeDefId.trim()
+    : undefined,
+  type:
+    !(typeof route.query.typeDefId === 'string' && route.query.typeDefId.trim()) && legacyBaseType.value
+      ? legacyBaseType.value
+      : undefined,
   status: statusFilter.value === 'all' ? undefined : statusFilter.value,
   assigneeId: assigneeFilter.value || undefined,
 }));
@@ -524,7 +535,7 @@ function patchFacetQuery(patch: Record<string, string | undefined>) {
 }
 
 function setTypeFilter(next: TypeFilter) {
-  patchFacetQuery({ type: next === 'all' ? undefined : next });
+  patchFacetQuery({ typeDefId: next === 'all' ? undefined : next, type: undefined });
 }
 
 function setStatusFilter(next: StatusFilter) {
@@ -620,6 +631,7 @@ watch(
     route.query.page,
     route.query.desk,
     route.query.type,
+    route.query.typeDefId,
     route.query.status,
     route.query.assigneeId,
     route.query.stage,
@@ -657,6 +669,7 @@ onMounted(() => {
   syncMobile();
   mobileQuery.addEventListener('change', syncMobile);
   void loadUsers();
+  void activityTypes.load(true);
   void loadStages().then(() => {
     if (migrateLegacyDoneFilter()) return;
     void load();
@@ -745,6 +758,16 @@ onUnmounted(() => {
           <UiIcon name="settings" :size="15" />
           مدیریت ستون‌ها
         </UiButton>
+        <UiButton
+          v-if="canManageStages"
+          variant="ghost"
+          size="sm"
+          type="button"
+          @click="typesManagerOpen = true"
+        >
+          <UiIcon name="sliders" :size="15" />
+          انواع فعالیت و فیلدها
+        </UiButton>
         <UiSegmented v-model="viewModel" :options="VIEW_OPTIONS">
           <template #icon="{ option }">
             <UiIcon :name="option.icon ?? 'list'" :size="15" />
@@ -800,7 +823,7 @@ onUnmounted(() => {
         <input
           v-model="q"
           type="search"
-          placeholder="جستجو در عنوان، مشتری، نوع فعالیت..."
+          placeholder="جستجو در عنوان، مشتری، کارشناس، نوع فعالیت..."
         />
       </form>
       <div class="filter-wrap" @click.stop>
@@ -962,27 +985,41 @@ onUnmounted(() => {
               <p v-if="subtitle(item)" class="sub">{{ subtitle(item) }}</p>
             </div>
           </div>
-          <div v-if="colOn('type')" class="type-cell">
-            <span class="type-pill" :class="item.type">
-              <UiIcon :name="typeIcon[item.type]" :size="13" />
-              {{ typeLabel[item.type] }}
-            </span>
-          </div>
-          <div v-if="colOn('when')" class="when" :class="{ late: uiStatus(item) === 'overdue' }">
-            <strong>{{ clockText(item) }}</strong>
-            <span>{{ dayText(item) }}</span>
-          </div>
           <div v-if="colOn('who')" class="who">
             <strong>{{
               item.assignees?.length
                 ? item.assignees.map((a) => a.fullName).join('، ')
                 : item.assignee?.fullName || '—'
             }}</strong>
-            <span v-if="item.company || item.person">
-              <UiIcon name="building" :size="12" />
-              {{ item.company?.name || item.person?.fullName }}
+          </div>
+          <div v-if="colOn('customer')" class="customer">
+            <RouterLink
+              v-if="item.company"
+              :to="{ name: 'company-detail', params: { id: item.company.id } }"
+            >
+              <UiIcon name="building" :size="13" />
+              {{ item.company.name }}
+            </RouterLink>
+            <RouterLink
+              v-if="item.person"
+              :to="{ name: 'person-detail', params: { id: item.person.id } }"
+              :class="{ secondary: Boolean(item.company) }"
+            >
+              <UiIcon name="user" :size="13" />
+              {{ item.person.fullName }}
+            </RouterLink>
+            <span v-if="!item.company && !item.person" class="none">—</span>
+          </div>
+          <div v-if="colOn('type')" class="type-cell">
+            <span class="type-pill" :style="typeColorStyle(activityTypeView(item).color)">
+              <UiIcon :name="activityTypeView(item).icon" :size="13" />
+              {{ activityTypeView(item).name }}
             </span>
           </div>
+          <div v-if="colOn('when')" class="when" :class="{ late: uiStatus(item) === 'overdue' }">
+            <strong>{{ clockText(item) }}</strong>
+            <span>{{ dayText(item) }}</span>
+          </div>
           <div v-if="colOn('status')" class="status-cell">
             <span class="status" :class="uiStatus(item)">
               <UiIcon :name="statusIcon[uiStatus(item)]" :size="13" />
@@ -1068,10 +1105,12 @@ onUnmounted(() => {
                   انجام شد
                 </button>
               </UiDropdownMenu>
-              <span class="type-ico" :class="item.type">
-                <UiIcon :name="typeIcon[item.type]" :size="18" />
+              <span class="type-ico" :style="typeColorStyle(activityTypeView(item).color)">
+                <UiIcon :name="activityTypeView(item).icon" :size="18" />
+              </span>
+              <span class="type-pill" :style="typeColorStyle(activityTypeView(item).color)">
+                {{ activityTypeView(item).name }}
               </span>
-              <span class="type-pill" :class="item.type">{{ typeLabel[item.type] }}</span>
             </div>
           </div>
           <footer class="card-foot">
@@ -1121,6 +1160,12 @@ onUnmounted(() => {
       @close="stagesManagerOpen = false"
       @changed="onStagesChanged(); kanbanReload += 1"
     />
+    <ActivityTypesManager
+      v-if="canManageStages"
+      :open="typesManagerOpen"
+      @close="typesManagerOpen = false"
+      @changed="onTypesChanged"
+    />
   </section>
 </template>
 
@@ -1566,7 +1611,7 @@ h1 {
 .thead,
 .trow {
   display: grid;
-  grid-template-columns: 2.4rem minmax(0, 2.2fr) 7.6rem 7.2rem 8.4rem 8.6rem 2.4rem;
+  grid-template-columns: 2.4rem minmax(0, 2fr) minmax(7rem, 0.9fr) minmax(7rem, 1fr) 7.6rem 7.2rem 8.6rem 2.4rem;
   gap: 0.8rem;
   align-items: center;
   padding: 0.95rem 1.1rem;
@@ -1682,6 +1727,40 @@ time.note {
   gap: 0.25rem;
 }
 
+.customer {
+  display: grid;
+  gap: 0.15rem;
+  min-width: 0;
+}
+
+.customer a {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.3rem;
+  min-width: 0;
+  color: var(--ink);
+  font-size: 0.86rem;
+  font-weight: 600;
+  text-decoration: none;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.customer a:hover {
+  color: #0f766e;
+}
+
+.customer a.secondary {
+  color: #94a3b8;
+  font-size: 0.75rem;
+  font-weight: 500;
+}
+
+.customer .none {
+  color: #cbd5e1;
+}
+
 .when.late {
   color: #dc2626;
 }
diff --git a/apps/web/src/views/ActivityDetailView.vue b/apps/web/src/views/ActivityDetailView.vue
index 77a0cbc..63a80db 100644
--- a/apps/web/src/views/ActivityDetailView.vue
+++ b/apps/web/src/views/ActivityDetailView.vue
@@ -12,9 +12,16 @@ import UserAvatar from '@/components/UserAvatar.vue';
 import UserMultiSelect from '@/components/UserMultiSelect.vue';
 import ActivityCommentSheet from '@/components/activities/ActivityCommentSheet.vue';
 import ActivityPostponeSheet from '@/components/activities/ActivityPostponeSheet.vue';
-import type { ActivityDto, ActivityPriority, ActivityType, OrgUserDto } from '@mento/shared';
+import ActivityFieldsView from '@/components/activities/ActivityFieldsView.vue';
+import type {
+  ActivityChecklistItem,
+  ActivityDto,
+  ActivityPriority,
+  OrgUserDto,
+} from '@mento/shared';
 import { useAuthStore } from '@/stores/auth';
 import { canReassignRecords } from '@/lib/roles';
+import { activityTypeView, typeColorStyle, useActivityTypes } from '@/lib/activity-types';
 
 const route = useRoute();
 const router = useRouter();
@@ -44,19 +51,33 @@ const assigneeNames = computed(() => {
   return list.length ? list.join('، ') : '—';
 });
 
-const typeLabel: Record<ActivityType, string> = {
-  call: 'تماس',
-  meeting: 'جلسه',
-  task: 'وظیفه',
-  note: 'پیام',
-};
+const activityTypes = useActivityTypes();
+const typeView = computed(() => (activity.value ? activityTypeView(activity.value) : null));
+const typeDef = computed(() => (activity.value ? activityTypes.defOf(activity.value) : null));
+const fieldsBusy = ref(false);
 
-const typeIcon: Record<ActivityType, 'phone' | 'users' | 'check' | 'chat'> = {
-  call: 'phone',
-  meeting: 'users',
-  task: 'check',
-  note: 'chat',
-};
+/** تیک چک‌لیست بدون باز کردن فرم ویرایش */
+async function toggleChecklistItem(key: string, itemId: string, done: boolean) {
+  const a = activity.value;
+  if (!a || fieldsBusy.value) return;
+  const list = (a.fields?.[key] as ActivityChecklistItem[] | undefined) ?? [];
+  const nextFields = {
+    ...(a.fields ?? {}),
+    [key]: list.map((it) => (it.id === itemId ? { ...it, done } : it)),
+  };
+  activity.value = { ...a, fields: nextFields };
+  fieldsBusy.value = true;
+  error.value = '';
+  try {
+    const { data } = await api.patch<ActivityDto>(`/activities/${a.id}`, { fields: nextFields });
+    activity.value = { ...data, participantUsers: a.participantUsers };
+  } catch {
+    activity.value = a;
+    error.value = 'ثبت تغییر چک‌لیست ناموفق بود.';
+  } finally {
+    fieldsBusy.value = false;
+  }
+}
 
 const priorityLabel: Record<ActivityPriority, string> = {
   very_low: 'خیلی کم',
@@ -254,6 +275,7 @@ watch(id, () => {
 onMounted(() => {
   void load();
   void loadUsers();
+  void activityTypes.load();
 });
 </script>
 
@@ -295,18 +317,18 @@ onMounted(() => {
               {{ subtitle }}
             </p>
           </div>
-          <span class="type-ico" :class="activity.type">
-            <UiIcon :name="typeIcon[activity.type]" :size="22" />
+          <span class="type-ico" :style="typeColorStyle(typeView!.color)">
+            <UiIcon :name="typeView!.icon" :size="22" />
           </span>
         </header>
 
         <dl>
           <div>
             <dt>
-              <UiIcon :name="typeIcon[activity.type]" :size="15" />
+              <UiIcon :name="typeView!.icon" :size="15" />
               نوع فعالیت
             </dt>
-            <dd>{{ typeLabel[activity.type] }}</dd>
+            <dd>{{ typeView!.name }}</dd>
           </div>
           <div>
             <dt>
@@ -369,6 +391,23 @@ onMounted(() => {
         </dl>
       </article>
 
+      <article v-if="typeDef?.fields.length" class="card type-card">
+        <h3>
+          <span class="type-ico sm" :style="typeColorStyle(typeView!.color)">
+            <UiIcon :name="typeView!.icon" :size="14" />
+          </span>
+          اطلاعات {{ typeView!.name }}
+        </h3>
+        <ActivityFieldsView
+          :fields="typeDef.fields"
+          :values="activity.fields ?? {}"
+          :participant-users="activity.participantUsers"
+          :busy="fieldsBusy"
+          editable
+          @toggle-item="toggleChecklistItem"
+        />
+      </article>
+
       <article class="card note">
         <button class="note-head" type="button" @click="noteOpen = !noteOpen">
           <strong>
@@ -573,24 +612,18 @@ h1 {
   flex-shrink: 0;
 }
 
-.type-ico.call {
-  background: #ecfdf5;
-  color: #0f766e;
+.type-ico.sm {
+  width: 28px;
+  height: 28px;
 }
 
-.type-ico.meeting {
-  background: #f5f3ff;
-  color: #6d28d9;
-}
-
-.type-ico.task {
-  background: #fff7ed;
-  color: #c2410c;
-}
-
-.type-ico.note {
-  background: #eff6ff;
-  color: #2563eb;
+.type-card h3 {
+  margin: 0 0 0.4rem;
+  display: flex;
+  align-items: center;
+  gap: 0.45rem;
+  font-size: 0.95rem;
+  color: #0f172a;
 }
 
 dl {
diff --git a/apps/web/src/views/ActivityFormView.vue b/apps/web/src/views/ActivityFormView.vue
index c11b6b2..ded9ea6 100644
--- a/apps/web/src/views/ActivityFormView.vue
+++ b/apps/web/src/views/ActivityFormView.vue
@@ -27,10 +27,15 @@ import {
   UiPageHeader,
   UiTextarea,
 } from '@/components/ui';
+import ActivityFieldsEditor from '@/components/activities/ActivityFieldsEditor.vue';
+import { typeColorStyle, useActivityTypes } from '@/lib/activity-types';
 import type {
   ActivityDto,
+  ActivityFieldValue,
+  ActivityFieldValues,
   ActivityPriority,
   ActivityType,
+  ActivityTypeDefDto,
   CreateActivityRequest,
   DealDto,
   OrgUserDto,
@@ -71,8 +76,13 @@ const people = ref<PersonDto[]>([]);
 const deals = ref<DealDto[]>([]);
 const users = ref<OrgUserDto[]>([]);
 
+const activityTypes = useActivityTypes();
 const title = ref('');
 const type = ref<ActivityType | ''>('');
+const typeDefId = ref('');
+const fieldValues = ref<ActivityFieldValues>({});
+/** نوع غیرفعالی که فعالیت فعلی دارد — در لیست انتخاب نگه داشته می‌شود */
+const keepTypeId = ref('');
 const priority = ref<ActivityPriority>('medium');
 const description = ref('');
 const tagsRaw = ref('');
@@ -185,16 +195,24 @@ watch(personQuery, (raw) => {
   }, 300);
 });
 
-const typeOptions: Array<{
-  value: ActivityType;
-  label: string;
-  icon: 'phone' | 'users' | 'check' | 'chat';
-}> = [
-  { value: 'call', label: 'تماس', icon: 'phone' },
-  { value: 'meeting', label: 'جلسه', icon: 'users' },
-  { value: 'task', label: 'وظیفه', icon: 'check' },
-  { value: 'note', label: 'یادداشت', icon: 'chat' },
-];
+const typeOptions = computed<ActivityTypeDefDto[]>(() =>
+  activityTypes.types.value.filter((t) => t.isActive || t.id === keepTypeId.value),
+);
+
+function pickType(def: ActivityTypeDefDto) {
+  typeDefId.value = def.id;
+  type.value = def.baseType;
+  typeOpen.value = false;
+}
+
+function isEmptyValue(v: ActivityFieldValue | undefined): boolean {
+  if (v == null || v === '') return true;
+  if (Array.isArray(v)) return v.length === 0;
+  if (typeof v === 'object') {
+    return !v.userIds?.length && !v.people?.length && !v.guests?.length;
+  }
+  return false;
+}
 
 const priorityOptions: Array<{ value: ActivityPriority; label: string; tone: string }> = [
   { value: 'very_high', label: 'خیلی زیاد', tone: 'very-high' },
@@ -204,7 +222,8 @@ const priorityOptions: Array<{ value: ActivityPriority; label: string; tone: str
   { value: 'very_low', label: 'خیلی کم', tone: 'very-low' },
 ];
 
-const typeMeta = computed(() => typeOptions.find((o) => o.value === type.value));
+const typeMeta = computed(() => activityTypes.byId.value.get(typeDefId.value) ?? null);
+const typeFields = computed(() => typeMeta.value?.fields ?? []);
 const selectedPerson = computed(() => people.value.find((p) => p.id === personId.value) ?? null);
 const selectedAssignees = computed(() =>
   assigneeIds.value
@@ -261,6 +280,9 @@ function defaultDue() {
 function resetForm() {
   title.value = '';
   type.value = '';
+  typeDefId.value = '';
+  fieldValues.value = {};
+  keepTypeId.value = '';
   priority.value = 'medium';
   description.value = '';
   tagsRaw.value = '';
@@ -300,6 +322,7 @@ async function load() {
       api.get<PaginatedResponse<PersonDto>>('/people', { params: { limit: 100 } }),
       api.get<PipelineBoardDto>('/pipelines/board'),
       api.get<OrgUserDto[]>('/users').catch(() => ({ data: [] as OrgUserDto[] })),
+      activityTypes.load(true),
     ]);
     people.value = peopleRes.data.items;
     deals.value = boardRes.data.stages.flatMap((s) => s.deals);
@@ -309,6 +332,10 @@ async function load() {
       const { data } = await api.get<ActivityDto>(`/activities/${id.value}`);
       title.value = data.title;
       type.value = data.type;
+      typeDefId.value =
+        data.typeDef?.id ?? activityTypes.systemOf.value[data.type]?.id ?? '';
+      keepTypeId.value = typeDefId.value;
+      fieldValues.value = { ...(data.fields ?? {}) };
       priority.value = data.priority ?? 'medium';
       description.value = data.description ?? '';
       needsNote.value = Boolean(data.description?.trim());
@@ -342,13 +369,17 @@ async function load() {
         await ensurePersonLoaded(incomingPerson);
         personId.value = incomingPerson;
       }
+      const incomingDef =
+        typeof route.query.typeDefId === 'string'
+          ? activityTypes.byId.value.get(route.query.typeDefId)
+          : undefined;
       const incomingType = props.initialType || route.query.type;
-      if (
-        typeof incomingType === 'string' &&
-        typeOptions.some((o) => o.value === incomingType)
-      ) {
-        type.value = incomingType as ActivityType;
-      }
+      const baseDef =
+        typeof incomingType === 'string'
+          ? activityTypes.systemOf.value[incomingType as ActivityType]
+          : undefined;
+      const def = incomingDef?.isActive ? incomingDef : baseDef;
+      if (def) pickType(def);
       const incomingTitle =
         props.initialTitle ||
         (typeof route.query.title === 'string' ? route.query.title : '');
@@ -379,9 +410,14 @@ function payload(): CreateActivityRequest {
   const due =
     dueDate.value && dueTime.value ? new Date(`${dueDate.value}T${dueTime.value}:00`) : null;
   const reminder = parseLocalInput(reminderAt.value);
+  const keys = new Set(typeFields.value.map((f) => f.key));
   return {
     title: title.value,
     type: type.value || 'task',
+    typeDefId: typeDefId.value || null,
+    fields: Object.fromEntries(
+      Object.entries(fieldValues.value).filter(([k, v]) => keys.has(k) && !isEmptyValue(v)),
+    ),
     priority: priority.value,
     description: description.value || undefined,
     tags: parseTags(tagsRaw.value),
@@ -411,6 +447,10 @@ function toggleAssignee(userId: string) {
 function validate() {
   if (!type.value) return 'نوع فعالیت را انتخاب کنید.';
   if (title.value.trim().length < 2) return 'عنوان فعالیت را بنویسید.';
+  const missing = typeFields.value.find(
+    (f) => f.required && f.type !== 'checkbox' && isEmptyValue(fieldValues.value[f.key]),
+  );
+  if (missing) return `فیلد «${missing.label}» را تکمیل کنید.`;
   if (!dueDate.value || !dueTime.value) return 'تاریخ و ساعت را مشخص کنید.';
   if (!assigneeIds.value.length) return 'حداقل یک مسئول فعالیت را انتخاب کنید.';
   if (needsNote.value && !description.value.trim()) return 'توضیح این فعالیت را بنویسید.';
@@ -553,21 +593,28 @@ watch([id, isNew], () => void load(), { immediate: true });
             <div class="field">
               <label>نوع فعالیت <i>*</i></label>
               <button class="picker type-pick" type="button" @click.stop="typeOpen = !typeOpen">
-                <span class="type-ico" :class="type || 'empty'">
+                <span
+                  class="type-ico"
+                  :style="typeMeta ? typeColorStyle(typeMeta.color) : undefined"
+                >
                   <UiIcon :name="typeMeta?.icon || 'phone'" :size="16" />
                 </span>
-                <span :class="{ ghost: !typeMeta }">{{ typeMeta?.label || 'انتخاب کنید' }}</span>
+                <span :class="{ ghost: !typeMeta }">{{ typeMeta?.name || 'انتخاب کنید' }}</span>
                 <UiIcon name="chevron" :size="16" />
               </button>
               <ul v-if="typeOpen" class="menu">
-                <li v-for="opt in typeOptions" :key="opt.value">
-                  <button type="button" @click="type = opt.value; typeOpen = false">
-                    <span class="type-ico" :class="opt.value">
+                <li v-for="opt in typeOptions" :key="opt.id">
+                  <button type="button" :class="{ on: opt.id === typeDefId }" @click="pickType(opt)">
+                    <span class="type-ico" :style="typeColorStyle(opt.color)">
                       <UiIcon :name="opt.icon" :size="14" />
                     </span>
-                    {{ opt.label }}
+                    {{ opt.name }}
+                    <small v-if="opt.fields.length" class="type-fields-count">
+                      {{ toFaDigits(opt.fields.length) }} فیلد
+                    </small>
                   </button>
                 </li>
+                <li v-if="!typeOptions.length" class="menu-empty">نوع فعالیتی تعریف نشده است.</li>
               </ul>
             </div>
             <div class="field">
@@ -582,6 +629,16 @@ watch([id, isNew], () => void load(), { immediate: true });
             </div>
           </div>
 
+          <div v-if="typeFields.length" class="card type-fields">
+            <p class="type-fields-title">
+              <span class="type-ico sm" :style="typeColorStyle(typeMeta!.color)">
+                <UiIcon :name="typeMeta!.icon" :size="13" />
+              </span>
+              اطلاعات {{ typeMeta!.name }}
+            </p>
+            <ActivityFieldsEditor v-model="fieldValues" :fields="typeFields" :users="users" />
+          </div>
+
           <div class="card toggles">
             <label class="switch">
               <span>این فعالیت انجام شده</span>
@@ -844,7 +901,7 @@ watch([id, isNew], () => void load(), { immediate: true });
         <dl>
           <div>
             <dt>نوع فعالیت</dt>
-            <dd>{{ typeMeta?.label || '—' }}</dd>
+            <dd>{{ typeMeta?.name || '—' }}</dd>
           </div>
           <div>
             <dt>تاریخ و ساعت</dt>
@@ -1160,19 +1217,40 @@ watch([id, isNew], () => void load(), { immediate: true });
   flex-shrink: 0;
 }
 
-.type-ico.meeting {
-  background: #f5f3ff;
-  color: #7c3aed;
+.type-ico.sm {
+  width: 26px;
+  height: 26px;
 }
 
-.type-ico.task {
-  background: #fff7ed;
-  color: #c2410c;
+.menu button.on {
+  background: #f0fdfa;
 }
 
-.type-ico.note {
-  background: #eff6ff;
-  color: #2563eb;
+.type-fields-count {
+  margin-inline-start: auto;
+  color: #94a3b8;
+  font-size: 0.72rem;
+}
+
+.menu-empty {
+  padding: 0.6rem;
+  color: #94a3b8;
+  font-size: 0.82rem;
+}
+
+.type-fields {
+  display: grid;
+  gap: 0.85rem;
+}
+
+.type-fields-title {
+  margin: 0;
+  display: flex;
+  align-items: center;
+  gap: 0.45rem;
+  font-weight: 700;
+  font-size: 0.92rem;
+  color: #0f172a;
 }
 
 .who {
diff --git a/packages/shared/src/index.ts b/packages/shared/src/index.ts
index 28848fe..f1c4304 100644
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -1199,6 +1199,152 @@ export interface ActivityStageCountsDto {
   total: number;
 }
 
+/** برچسب نوع پایه (برای گزارش‌ها و فعالیت‌های بدون نوع سفارشی) */
+export const ACTIVITY_TYPE_LABELS: Record<ActivityType, string> = {
+  call: "تماس",
+  meeting: "جلسه",
+  task: "وظیفه",
+  note: "پیام",
+};
+
+export type ActivityFieldType =
+  | "text"
+  | "textarea"
+  | "number"
+  | "date"
+  | "url"
+  | "select"
+  | "multiselect"
+  | "checkbox"
+  | "checklist"
+  | "participants";
+
+export const ACTIVITY_FIELD_TYPES: ActivityFieldType[] = [
+  "text",
+  "textarea",
+  "number",
+  "date",
+  "url",
+  "select",
+  "multiselect",
+  "checkbox",
+  "checklist",
+  "participants",
+];
+
+export const ACTIVITY_FIELD_TYPE_LABELS: Record<ActivityFieldType, string> = {
+  text: "متن کوتاه",
+  textarea: "متن بلند",
+  number: "عدد",
+  date: "تاریخ",
+  url: "لینک",
+  select: "انتخاب از لیست",
+  multiselect: "چندانتخابی",
+  checkbox: "بله / خیر",
+  checklist: "چک‌لیست (لیست کارها)",
+  participants: "شرکت‌کنندگان",
+};
+
+/** فیلدهایی که گزینه لازم دارند */
+export const ACTIVITY_FIELD_TYPES_WITH_OPTIONS: ActivityFieldType[] = ["select", "multiselect"];
+
+export interface ActivityFieldDef {
+  /** کلید پایدار (a-z، 0-9، _) — با تغییر برچسب عوض نمی‌شود */
+  key: string;
+  label: string;
+  type: ActivityFieldType;
+  options?: string[];
+  required?: boolean;
+  placeholder?: string | null;
+}
+
+export interface ActivityChecklistItem {
+  id: string;
+  text: string;
+  done: boolean;
+}
+
+export interface ActivityParticipantsValue {
+  /** کاربران سازمان — فعالیت در لیست آن‌ها هم دیده می‌شود */
+  userIds: string[];
+  /** اشخاص (مشتریان) */
+  people: Array<{ id: string; name: string }>;
+  /** مهمانان آزاد (نام) */
+  guests: string[];
+}
+
+export type ActivityFieldValue =
+  | string
+  | number
+  | boolean
+  | string[]
+  | ActivityChecklistItem[]
+  | ActivityParticipantsValue
+  | null;
+
+export type ActivityFieldValues = Record<string, ActivityFieldValue>;
+
+export const ACTIVITY_TYPE_ICONS = [
+  "phone",
+  "users",
+  "check",
+  "chat",
+  "mail",
+  "building",
+  "calendar",
+  "star",
+  "flag",
+  "briefcase",
+  "document",
+  "target",
+  "truck",
+  "send",
+  "megaphone",
+  "pin",
+  "bell",
+  "sparkle",
+] as const;
+
+export type ActivityTypeIcon = (typeof ACTIVITY_TYPE_ICONS)[number];
+
+export interface ActivityTypeSummaryDto {
+  id: string;
+  name: string;
+  icon: ActivityTypeIcon;
+  color: ActivityStageColor;
+}
+
+export interface ActivityTypeDefDto extends ActivityTypeSummaryDto {
+  /** نوع پایه — مبنای گزارش‌ها و سازگاری */
+  baseType: ActivityType;
+  fields: ActivityFieldDef[];
+  position: number;
+  isActive: boolean;
+  /** چهار نوع اصلی — حذف‌شدنی نیستند */
+  isSystem: boolean;
+}
+
+export interface CreateActivityTypeRequest {
+  name: string;
+  baseType?: ActivityType;
+  icon?: ActivityTypeIcon;
+  color?: ActivityStageColor;
+  fields?: ActivityFieldDef[];
+}
+
+export interface UpdateActivityTypeRequest {
+  name?: string;
+  baseType?: ActivityType;
+  icon?: ActivityTypeIcon;
+  color?: ActivityStageColor;
+  fields?: ActivityFieldDef[];
+  isActive?: boolean;
+}
+
+export interface ReorderActivityTypesRequest {
+  typeIds: string[];
+}
+
 export type CustomFieldEntity = "person" | "company" | "deal";
 export type CustomFieldType = "text" | "number" | "date" | "boolean" | "select";
 
@@ -1267,6 +1413,14 @@ export interface ActivityDto {
   createdBy: UserSummaryDto | null;
   /** مرحلهٔ مؤثر (ستون کانبان) */
   stageId?: string | null;
+  /** نوع مؤثر (سفارشی یا نوع اصلیِ همان type) */
+  typeDef?: ActivityTypeSummaryDto | null;
+  /** مقادیر فیلدهای اختصاصی نوع */
+  fields?: ActivityFieldValues;
+  /** کاربران شرکت‌کننده (از فیلدهای شرکت‌کنندگان) */
+  participantIds?: string[];
+  /** نام کاربران شرکت‌کننده — فقط در جزئیات فعالیت */
+  participantUsers?: UserSummaryDto[];
   createdAt: string;
   updatedAt: string;
 }
@@ -1276,6 +1430,9 @@ export interface CreateActivityRequest {
   /** مرحلهٔ اولیه؛ وضعیت فعالیت از نوع مرحله گرفته می‌شود */
   stageId?: string | null;
   type?: ActivityType;
+  /** نوع سفارشی؛ type از نوع پایهٔ آن گرفته می‌شود */
+  typeDefId?: string | null;
+  fields?: ActivityFieldValues;
   priority?: ActivityPriority;
   description?: string;
   dueAt?: string | null;
@@ -1296,6 +1453,8 @@ export interface CreateActivityRequest {
 export interface UpdateActivityRequest {
   title?: string;
   type?: ActivityType;
+  typeDefId?: string | null;
+  fields?: ActivityFieldValues;
   status?: ActivityStatus;
   priority?: ActivityPriority;
   description?: string | null;