chore: feat: add Python 3.10 support [ENG-11910]

[ryoppippi]

Summary

• Add support for Python 3.10 by updating requires-python from >=3.11 to >=3.10
• Add Python 3.10 classifier in pyproject.toml
• Add Python 3.10 to CI test matrix

Motivation

This allows stackone-ai to be used as a dependency in projects that support Python 3.10, such as pydantic-ai which requires Python >=3.10.

Test plan

• CI passes for Python 3.10, 3.11, and 3.13

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Summary by cubic

Add Python 3.10 support by setting requires-python >=3.10, adding the 3.10 classifier, and testing 3.10/3.11/3.12/3.13 in CI. Also update code and tooling for 3.10 compatibility (use timezone.utc, set Ruff target to py310, and tidy langgraph imports, including ty: ignore for deprecated create_react_agent).

^{Written for commit f0549c8. Summary will update on new commits.}

[Copilot]

Pull request overview

This PR adds Python 3.10 support to the stackone-ai package by lowering the minimum Python version requirement from 3.11 to 3.10, enabling the package to be used as a dependency in projects that support Python 3.10 (such as pydantic-ai).

Changes:

• Updated requires-python constraint from >=3.11 to >=3.10 in pyproject.toml
• Added Python 3.10 classifier to package metadata
• Added Python 3.10 to the CI test matrix

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
pyproject.toml	Updated minimum Python version requirement and added Python 3.10 classifier
.github/workflows/ci.yaml	Added Python 3.10 to CI test matrix

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[Copilot]

The CI test matrix is missing Python 3.12, which is listed in the package classifiers (line 17). Consider adding "3.12" to the python-version matrix to ensure comprehensive testing across all supported Python versions declared in pyproject.toml.

[cubic-dev-ai]

1 issue found across 2 files

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="pyproject.toml">

<violation number="1" location="pyproject.toml:6">
P2: Lowering `requires-python` to 3.10 while keeping Ruff’s `target-version = "py311"` means linting will still allow 3.11-only syntax, undermining the new 3.10 support. Consider aligning `target-version` with the new minimum or removing it to let `requires-python` drive Ruff’s version checks.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}