refactor: 统一 API 格式显示函数，补全 Usage/Trace 的 provider 链路信息

- 提取 formatApiFormat 为共享工具函数，替换各组件中分散的 API_FORMAT_LABELS 调用
- Trace API 返回密钥认证类型(key_auth_type)和 OAuth 套餐信息(key_oauth_plan_type)
- 请求时间线展示密钥认证方式标签（OAuth/Vertex AI/Kiro 等）
- Usage 记录补充 provider_id/endpoint_id/key_id，避免 curl 复现时缺失 provider 信息
- curl 复现兜底从 RequestCandidate 表查找 provider 信息
- Headers Diff 面板左右独立滚动并同步垂直滚动位置

src/api/handlers/base/chat_sync_executor.py

@@ -255,6 +255,9 @@ class ChatSyncExecutor:
                 request_body=actual_request_body,
                 error_message=str(e),
                 is_stream=False,
+                provider_id=ctx.provider_id,
+                provider_endpoint_id=ctx.endpoint_id,
+                provider_api_key_id=ctx.key_id,
                 request_metadata=request_metadata or None,
             )
             client_format = (ctx.client_api_format_for_error or "").upper()
@@ -289,6 +292,9 @@ class ChatSyncExecutor:
                 provider_request_headers=ctx.provider_request_headers,
                 response_headers=ctx.response_headers,
                 client_response_headers={"content-type": "application/json"},
+                provider_id=ctx.provider_id,
+                provider_endpoint_id=ctx.endpoint_id,
+                provider_api_key_id=ctx.key_id,
                 # 格式转换追踪
                 endpoint_api_format=ctx.provider_api_format_for_error or None,
                 has_format_conversion=is_format_converted(
@@ -347,6 +353,9 @@ class ChatSyncExecutor:
                 response_headers=error_response_headers,
                 # 非流式失败返回给客户端的是 JSON 错误响应
                 client_response_headers={"content-type": "application/json"},
+                provider_id=ctx.provider_id,
+                provider_endpoint_id=ctx.endpoint_id,
+                provider_api_key_id=ctx.key_id,
                 # 格式转换追踪
                 endpoint_api_format=ctx.provider_api_format_for_error or None,
                 has_format_conversion=is_format_converted(
@@ -377,6 +386,9 @@ class ChatSyncExecutor:
         ctx = self._ctx
 
         ctx.provider_name = str(provider.name)
+        ctx.provider_id = str(provider.id)
+        ctx.endpoint_id = str(endpoint.id)
+        ctx.key_id = str(key.id)
         provider_api_format = str(endpoint.api_format or api_format)
         client_api_format = api_format.value if hasattr(api_format, "value") else str(api_format)
 
@@ -710,6 +722,9 @@ class ChatSyncExecutor:
             provider_request_headers=ctx.provider_request_headers,
             response_headers=ctx.response_headers,
             client_response_headers=client_response_headers,
+            provider_id=ctx.provider_id,
+            provider_endpoint_id=ctx.endpoint_id,
+            provider_api_key_id=ctx.key_id,
             # 格式转换追踪
             endpoint_api_format=ctx.provider_api_format or None,
             has_format_conversion=ctx.has_format_conversion,

src/api/handlers/base/stream_telemetry.py

@@ -269,6 +269,9 @@ class StreamTelemetryRecorder:
             response_body=response_body,
             response_headers=ctx.response_headers,
             client_response_headers=client_response_headers,
+            provider_id=ctx.provider_id,
+            provider_endpoint_id=ctx.endpoint_id,
+            provider_api_key_id=ctx.key_id,
             target_model=ctx.mapped_model,
             request_type="chat",
             metadata=metadata,
@@ -318,6 +321,9 @@ class StreamTelemetryRecorder:
             response_body=response_body,
             response_headers=ctx.response_headers,
             client_response_headers=client_response_headers,
+            provider_id=ctx.provider_id,
+            provider_endpoint_id=ctx.endpoint_id,
+            provider_api_key_id=ctx.key_id,
             target_model=ctx.mapped_model,
             request_type="chat",
             metadata=metadata,