[New Feature] Full support for Python 3.14(No GIL)

[JohnRichard4096]

中文用户？

• 我是一个中文用户，并且我明白需要使用英语编写Issue

What new feature/improvement

Add a dedicated CI test matrix entry for Python 3.14 running in free-threading mode (PYTHON_GIL=0).

Background

AmritaCore currently supports Python 3.10–3.15, and the README explicitly mentions Python 3.14+ free-threading as an Unstable Feature:

Python 3.14+ Supporting: we are not sure if it will work well on Python 3.14+ (No GIL Version).

This uncertainty should be resolved through automated testing.

Motivation

• Free-threading fundamentally changes CPython's concurrency model—AmritaCore uses asyncio, aiologic, and anyio extensively, and we need to verify thread safety under free-threading.
• Downstream users running CPU-bound AI workloads (token counting, tool execution, embedding generation) may benefit from true parallelism and need confidence that the framework is compatible.
• Early detection of breakage in third-party dependencies (aiohttp, openai, anthropic, jieba, filetype, etc.).

Proposed Implementation

Add a dedicated matrix entry in the CI.

When no-gil: true:

• Set PYTHON_GIL=0 environment variable before running tests.
• Use python3.14t interpreter or python3.14 -X gil=0.
• Run the full test suite.

Acceptance Criteria

• A CI job named "Python 3.14 (free-threading)" runs on every PR and push to main.
• All existing tests pass under free-threading, or known incompatibilities are explicitly documented with pytest.mark.xfail / pytest.skip.
• The job runs in parallel with the existing matrix and does not significantly increase CI completion time.

Additional Context

• CPython free-threading documentation: https://docs.python.org/3.14/howto/free-threading-extensions.html
• This aligns with our commitment to staying at the forefront of the Python ecosystem while maintaining backward compatibility.

[JohnRichard4096]

Well, we are still waitting for Anthropic SDK's support.