docs: clarify Python version support for source installation

[Roovelrz]

Summary

• Clarify that Python 3.10 or 3.11 should be used when installing MemoryOS from source
• Document the current Python 3.12 limitation caused by the pinned numpy==1.24.* dependency
• Preserve the existing Python 3.10 Conda environment as the recommended setup

Motivation

Issue #76 reports an installation failure when using Python 3.12. The installation fails while processing numpy==1.24.* from memoryos-pypi/requirements.txt.

NumPy 1.24 supports Python 3.8 through 3.11, but the current README states Python >= 3.10. This can lead users to assume that Python 3.12 is supported.

This PR clarifies the currently supported environment without changing dependency versions. Upgrading NumPy may require broader compatibility testing across the project and is outside the scope of this documentation fix.

Changes

Updated the MemoryOS_PyPi Getting Started prerequisites in README.md to:

• Recommend Python 3.10 or 3.11
• Explain that Python 3.12 is not currently supported for source installation because of the pinned NumPy 1.24 dependency
• Retain the existing Python 3.10 Conda setup command

Testing

• Reproduced the reported installation failure with Python 3.12
• Verified the README diff
• Ran git diff --check
• No application code or dependency files were changed

Related issue

Addresses #76