feat(api): 统一官方兼容接口响应协议

兼容接口现在以入口协议作为最终响应协议，同协议保留官方 Wire 响应，跨协议统一转换成功、任务状态与错误结构。

同时修正异步提交状态边界，持久化兼容公开任务标识和官方提交响应，并新增迁移、流式响应及协议契约测试。

验证：go vet ./...；go test ./...；govulncheck ./...；pnpm lint；pnpm test；pnpm build；pnpm audit --audit-level high；pnpm openapi；全部 CI 脚本。

apps/api/internal/clients/responses_compat.go

@@ -15,6 +15,12 @@ const (
 	ProtocolOpenAIChatCompletions = "openai_chat_completions"
 	ProtocolOpenAIResponses       = "openai_responses"
 	ProtocolAnthropicMessages     = "anthropic_messages"
+	ProtocolOpenAIEmbeddings      = "openai_embeddings"
+	ProtocolOpenAIImages          = "openai_images"
+	ProtocolGeminiGenerateContent = "gemini_generate_content"
+	ProtocolVolcesContents        = "volces_contents_generations_v3"
+	ProtocolKlingV1Omni           = "kling_v1_omni_video"
+	ProtocolKlingV2Omni           = "kling_v2_omni_video"
 )
 
 var supportedResponseFallbackParameters = map[string]struct{}{