feat: group activities into boards with their own stages, like sales pipelines

Existing stages and activities move into a default board per environment; new activities pick a board in the form.

apps/api/src/activities/dto.ts

@@ -79,6 +79,11 @@ export class ListActivitiesQueryDto {
   @IsString()
   stageId?: string;
 
+  /** گروه فعالیت؛ خالی = همهٔ گروه‌ها (در شمارش ستون‌ها = گروه پیش‌فرض) */
+  @IsOptional()
+  @IsString()
+  boardId?: string;
+
   @IsOptional()
   @IsString()
   personId?: string;
@@ -121,7 +126,33 @@ export class ListActivitiesQueryDto {
 
 const STAGE_COLORS = ['green', 'orange', 'purple', 'blue', 'rose', 'slate'] as const;
 
+export class CreateActivityBoardDto {
+  @IsString()
+  @MinLength(2)
+  @MaxLength(80)
+  name!: string;
+}
+
+export class UpdateActivityBoardDto {
+  @IsOptional()
+  @IsString()
+  @MinLength(2)
+  @MaxLength(80)
+  name?: string;
+}
+
+export class ListActivityStagesQueryDto {
+  @IsOptional()
+  @IsString()
+  boardId?: string;
+}
+
 export class CreateActivityStageDto {
+  /** خالی = گروه پیش‌فرض */
+  @IsOptional()
+  @IsString()
+  boardId?: string;
+
   @IsString()
   @MinLength(1)
   @MaxLength(80)
@@ -229,6 +260,11 @@ export class CreateActivityDto {
   @MaxLength(200)
   title!: string;
 
+  @IsOptional()
+  @ValidateIf((_, v) => v !== '' && v != null)
+  @IsString()
+  boardId?: string | null;
+
   @IsOptional()
   @ValidateIf((_, v) => v !== '' && v != null)
   @IsString()
@@ -319,6 +355,12 @@ export class UpdateActivityDto {
   @MaxLength(200)
   title?: string;
 
+  /** null/خالی = گروه پیش‌فرض */
+  @IsOptional()
+  @ValidateIf((_, v) => v !== '' && v != null)
+  @IsString()
+  boardId?: string | null;
+
   @IsOptional()
   @IsIn(ACTIVITY_TYPES)
   type?: (typeof ACTIVITY_TYPES)[number];