feat(client): 短信登录、JWT、Redis 与 Spug 短信及流式 Chat

- 新增客户端认证：短信发送/登录、access/refresh JWT、Guard/Strategy\n- Redis 存验证码；可配置 SMS_CODE_TTL_SECONDS；失败时回滚与明确错误\n- 短信改为 Spug 推送助手（code/targets/number/name），移除 UniSMS\n- Chat SSE 接口与 DTO；AppModule 挂载 RedisModule\n- 更新 README 与 project-solution 环境变量说明

Made-with: Cursor

src/apps/client-app/chat/dto/stream-chat.dto.ts

@@ -0,0 +1,38 @@
+import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
+import { Type } from 'class-transformer';
+import { IsArray, IsIn, IsOptional, IsString, ValidateNested } from 'class-validator';
+import { StreamChatRequest } from '@shared/ai-gateway/types/chat.types';
+
+class ChatMessageDto {
+  @ApiProperty({ enum: ['system', 'user', 'assistant'] })
+  @IsString()
+  @IsIn(['system', 'user', 'assistant'])
+  role!: 'system' | 'user' | 'assistant';
+
+  @ApiProperty({ description: '消息内容', example: '你是谁' })
+  @IsString()
+  content!: string;
+}
+
+export class StreamChatBodyDto implements StreamChatRequest {
+  @ApiPropertyOptional({ description: '模型名', example: 'qwen-plus' })
+  @IsOptional()
+  @IsString()
+  model?: string;
+
+  @ApiPropertyOptional({
+    description: '指定平台，不传或 auto 由路由自动选择',
+    enum: ['auto', 'qwen', 'deepseek', 'volc'],
+    example: 'qwen',
+  })
+  @IsOptional()
+  @IsString()
+  platform?: string;
+
+  @ApiProperty({ type: [ChatMessageDto] })
+  @IsArray()
+  @ValidateNested({ each: true })
+  @Type(() => ChatMessageDto)
+  messages!: ChatMessageDto[];
+}
+