"Stop TTS"-Button doesn't stop TTS

[Snowman-25]

Before submitting your bug report

• [X] I believe this is a bug. I'll try to join the Continue Discord for questions
• [X] I'm not able to find an open issue that reports the same bug
• [X] I've seen the troubleshooting guide on the Continue Docs

Relevant environment info

- OS: Windows 11 23H2 (Build 22631.4169)
- Continue:   v0.8.52
- IDE:        VSCode 1.92.1 (user setup)
- Model:      n/a
- config.json:

{
  "models": [
    {
      "title": "Ollama",
      "provider": "ollama",
      "model": "AUTODETECT"
    }
  ],
  "customCommands": [
    {
      "name": "test",
      "prompt": "{{{ input }}}\n\nWrite a comprehensive set of unit tests for the selected code. It should setup, run tests that check for correctness including important edge cases, and teardown. Ensure that the tests are complete and sophisticated. Give the tests just as chat output, don't edit any file.",
      "description": "Write unit tests for highlighted code"
    },
    {
      "name": "desc",
      "prompt": "{{{ input }}}\n\nWrite a comprehensive comment for each block of the selected code. It should describe what it does and show possible caveats.",
      "description": "Comment the highlighted code"
    }
  ],
  "tabAutocompleteModel": {
    "title": "Starcoder 3b",
    "provider": "ollama",
    "model": "starcoder2"
  },
  "allowAnonymousTelemetry": false,
  "embeddingsProvider": {
    "provider": "transformers.js"
  },
  "contextProviders": [
    {
      "name": "open",
      "params": {
        "onlyPinned": false
      }
     }
  ],
  "experimental": {
    "readResponseTTS": true
  },
  "ui": {
    "showChatScrollbar": true
  },
  "docs": []
}

Description

After activating TTS, while a response is spoken, there's a "Stop TTS"-Button where the 'Cancel' button is when the model is still generating an answer. It doesn't work. TTS-Output doesn't stop.

To reproduce

1. Activate TTS by adding readResponseTTS: True to your experimental-section in config.json
2. Enter any prompt
3. While the prompt is being read, press "Stop TTS"

Log output

No response

[Patrick-Erichsen]

Tried this on macOS + VS Code and TTS output was stopped.

This is likely a Windows specific issue since we handle TTS in core.

Here is how we init the TTS process on Windows: https://github.com/continuedev/continue/blob/0cfcc599de1a54ae0e9c1bbcb09c5f3d0e03a126/core/util/tts.ts#L67-L72

Here's the relevant "kill" logic: https://github.com/continuedev/continue/blob/0cfcc599de1a54ae0e9c1bbcb09c5f3d0e03a126/core/util/tts.ts#L91-L113

My best guess is that we're not finding the process on Windows for some reason.