Add deal co-assignees and saved filters on people/pipeline lists.

Deals keep a primary owner plus shared assignees with matching visibility; Contacts and Pipeline can save and reuse filter presets.

apps/api/src/pipelines/dto.ts

@@ -138,6 +138,11 @@ export class CreateDealDto {
   @IsString()
   ownerId?: string | null;
 
+  @IsOptional()
+  @IsArray()
+  @IsString({ each: true })
+  assigneeIds?: string[];
+
   @IsOptional()
   @IsObject()
   customFields?: Record<string, unknown>;
@@ -216,6 +221,11 @@ export class UpdateDealDto {
   @IsString()
   ownerId?: string | null;
 
+  @IsOptional()
+  @IsArray()
+  @IsString({ each: true })
+  assigneeIds?: string[];
+
   @IsOptional()
   @IsObject()
   customFields?: Record<string, unknown>;