[mutianf]

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:

• Make sure to open an issue as a bug/issue before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

Fixes #<issue_number_goes_here> 🦕

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[gemini-code-assist]

Code Review

This pull request introduces automatic cleanup of stale accelerator daemon temporary directories at startup by scanning for leftover directories, checking if their sockets are active, and removing them if they are older than a threshold. The review feedback correctly identifies potential compatibility issues on non-Unix platforms (such as Windows) where Unix domain sockets are unsupported. It is recommended to add a defensive guard in the sweep function to avoid AttributeErrors and to skip the new unit tests on unsupported platforms.

[mutianf]

Note to reviewer: logic changes are in daemon.py. Rest are formatting changes