feat(auth): add PATCH /auth/profile endpoint for user profile updates

Implement user profile update with fullName, avatarUrl, and email fields.
Email changes include uniqueness validation and Email VO verification.
Follows existing DDD/CQRS patterns with cache invalidation.
19 unit tests covering handler logic and DTO validation.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/auth/presentation/dto/update-profile.dto.ts

@@ -0,0 +1,24 @@
+import { ApiPropertyOptional } from '@nestjs/swagger';
+import { IsEmail, IsOptional, IsString, IsUrl, MinLength } from 'class-validator';
+
+export class UpdateProfileDto {
+  @ApiPropertyOptional({ example: 'Nguyen Van A', description: 'Full name' })
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  fullName?: string;
+
+  @ApiPropertyOptional({
+    example: 'https://cdn.goodgo.vn/avatars/user-123.jpg',
+    description: 'Avatar URL',
+  })
+  @IsOptional()
+  @IsString()
+  @IsUrl({}, { message: 'Avatar URL không hợp lệ' })
+  avatarUrl?: string;
+
+  @ApiPropertyOptional({ example: 'user@example.com', description: 'Email address' })
+  @IsOptional()
+  @IsEmail({}, { message: 'Email không hợp lệ' })
+  email?: string;
+}