fix: add encoding='utf-8' to open() calls for non-English environments

[goingforstudying-ctrl]

Summary

Adds encoding='utf-8' to open() calls in autogen-ext to prevent UnicodeDecodeError on systems with non-UTF-8 default locale (e.g., Windows with cp950).

Changes

• chat_completion_client_recorder.py: add encoding='utf-8' to read/write of session files
• page_logger.py: add encoding='utf-8' to HTML/hash file writes

Test Plan

• Verified files open correctly on non-UTF-8 locale systems

Fixes #5566

[goingforstudying-ctrl]

@microsoft-github-policy-service agree

[goingforstudying-ctrl]

Hi @microsoft autogen maintainers! 👋

Following up on this small fix that adds encoding='utf-8' to open() calls in the task-centric memory utilities. This prevents encoding issues on non-English system locales.

The CLA has been signed. Please let me know if any changes are needed or if there's a specific maintainer I should tag for review.

Thanks!

[goingforstudying-ctrl]

Hi @microsoft autogen maintainers! 👋

Following up on this small fix that adds encoding='utf-8' to open() calls in two files. This prevents UnicodeDecodeError on systems where the default encoding is not UTF-8 (e.g., Windows with non-English locale).

The CLA has been signed and all security checks pass. This is a minimal, safe improvement.

Please let me know if any changes are needed. Happy to address any feedback!

[goingforstudying-ctrl]

Hi @microsoft autogen maintainers! 👋

Following up on this small fix that adds encoding='utf-8' to open() calls in the task-centric memory utilities. It's been about 6 days since opening.

The CLA has been signed and all security checks (GitGuardian, license/cla) pass. This fix prevents UnicodeDecodeError on systems where the default encoding is not UTF-8 (e.g., Windows with non-English locale).

Please let me know if any changes are needed or if there's anything I can do to help move this forward!

Thanks for maintaining AutoGen! 🙏

[goingforstudying-ctrl]

Hi @microsoft autogen maintainers! 👋

Just checking in on this PR — it's been about 8 days since opening and there hasn't been any maintainer feedback yet. Please let me know if:

1. This PR needs any changes
2. There's a specific process I should follow
3. The team is just backlogged and I should wait

Happy to make any adjustments needed!

Thank you for your time.

[nexoracontrol-ops]

ใช้ NEXORA stack บน Windows locale ไทย

[goingforstudying-ctrl]

Hi @nexoracontrol-ops! 👋

Thank you for testing this on a Thai Windows locale with the NEXORA stack! That's exactly the kind of environment where this fix matters most.

Could you let me know if the encoding='utf-8' addition resolved any issues you were seeing, or if there are any other encoding-related problems in the memory utilities I should address?

Happy to make further adjustments if needed.

[goingforstudying-ctrl]

Closing in favor of #7666