fix: support OpenRouter reasoning effort compatibility

src/client/core.ts

@@ -1,8 +1,8 @@
 import type { CancellationToken } from 'vscode';
 import { safeStringify } from '../json';
 import { logger } from '../logger';
+import type { ChatCompletionRequestBody } from '../provider/thinking';
 import type {
-	DeepSeekRequest,
 	DeepSeekStreamChunk,
 	DeepSeekToolCall,
 	DeepSeekUsage,
@@ -25,7 +25,7 @@ export class DeepSeekClient {
 	 * Parses SSE chunks and dispatches callbacks for content, thinking, and tool calls.
 	 */
 	async streamChatCompletion(
-		request: DeepSeekRequest,
+		request: ChatCompletionRequestBody,
 		callbacks: StreamCallbacks,
 		cancellationToken?: CancellationToken,
 	): Promise<void> {
@@ -81,7 +81,9 @@ export class DeepSeekClient {
 					break;
 				}
 
-				buffer += decoder.decode(value, { stream: true });
+				const decoded = decoder.decode(value, { stream: true });
+				callbacks.onRawResponseData?.(decoded);
+				buffer += decoded;
 
 				const lines = buffer.split('\n');
 				buffer = lines.pop() || '';

src/client/error/index.ts

@@ -38,7 +38,10 @@ export class DeepSeekRequestError extends Error {
 	readonly diagnosticMessage: string;
 	readonly baseUrl?: string;
 	readonly status?: number;
+	readonly statusText?: string;
 	readonly code?: string;
+	readonly serverMessage?: string;
+	readonly responseText?: string;
 
 	constructor(options: {
 		message: string;
@@ -47,7 +50,10 @@ export class DeepSeekRequestError extends Error {
 		diagnosticMessage?: string;
 		baseUrl?: string;
 		status?: number;
+		statusText?: string;
 		code?: string;
+		serverMessage?: string;
+		responseText?: string;
 		cause?: unknown;
 	}) {
 		super(options.message, { cause: options.cause });
@@ -57,7 +63,10 @@ export class DeepSeekRequestError extends Error {
 		this.diagnosticMessage = options.diagnosticMessage ?? options.message;
 		this.baseUrl = options.baseUrl;
 		this.status = options.status;
+		this.statusText = options.statusText;
 		this.code = options.code;
+		this.serverMessage = options.serverMessage;
+		this.responseText = options.responseText;
 	}
 }
 
@@ -79,7 +88,10 @@ export async function createHttpError(
 		kind: 'http',
 		baseUrl,
 		status: response.status,
+		statusText: response.statusText,
 		code: `HTTP_${response.status}`,
+		serverMessage,
+		responseText,
 		diagnosticMessage: joinDiagnosticParts(
 			`kind=http`,
 			`status=${response.status}`,

src/client/types.ts

@@ -1,4 +1,4 @@
-import type { DeepSeekRequest } from '../types';
+import type { ChatCompletionRequestBody } from '../provider/thinking';
 
 export interface ErrorActionUrls {
 	configureApiKey?: string;
@@ -7,7 +7,7 @@ export interface ErrorActionUrls {
 
 export interface RequestErrorContext {
 	baseUrl: string;
-	request: DeepSeekRequest;
+	request: ChatCompletionRequestBody;
 }
 
 export interface ErrorActionLink {