[Bug] VS Code 1.138 新带进来的两个「无 schema 工具」导致请求报错

[Ritchie1108]

What happened?

VS Code 1.138 新带进来的两个「无 schema 工具」

{ "type": "function", "function": { "name": "terminal_last_command", "description": "Get the last command run in the active terminal." } }
{ "type": "function", "function": { "name": "terminal_selection",    "description": "Get the current selection in the active terminal." } }

会导致请求里 inputSchema 的序列化有问题

这个时候会出现报错

[error] DeepSeek request failed: kind=http status=400 baseUrl="https://crs.*****.net/v1" model="deepseek-v4.1-flash" stream=true thinking="enabled" reasoningEffort="max" toolChoice="auto" toolCount=54 messageCount=7 messageChars=11409 imageParts=0 statusText="Bad Request" serverMessage="tools[50].***.parameters must be valid JSON (line 1, column 1). Request id: ********" body="{\"error\":{\"message\":\"tools[50].***.parameters must be valid JSON (line 1, column 1). Request id: *******\",\"type\":\"BadRequest\",\"param\":\"\",\"code\":\"InvalidParameter\"}}"
DeepSeekRequestError: DeepSeek API request failed with HTTP 400
	at createHttpError (\.vscode\extensions\vizards.deepseek-v4-for-copilot-0.9.2\out\client\error\index.js:51:12)
	at process.processTicksAndRejections (node:internal/process/task_queues:104:5)
	at async DeepSeekClient.streamChatCompletion (\.vscode\extensions\vizards.deepseek-v4-for-copilot-0.9.2\out\client\core.js:52:23)

在tools列表中去掉这两个工具就正常

How can we reproduce it?

增加兼容处理让扩展在 inputSchema 缺失时补一个合法空 schema（{ type: 'object', properties: {} }），而不是丢掉 parameters

Extension version

0.9.2

Editor build

1.138

Additional context, if relevant

No response

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