ci: run the packages/* pytest suites

[igor17400]

Pull Request Checklist

Please ensure that your PR meets the following requirements:

• I have read the CONTRIBUTING guide.
• I have updated the documentation (if applicable).
• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.

Description

The pytest suites under packages/* ran nowhere: ci.yml covered onlysdks/python/sdk and the langchain cookbook, and the publish-*.yml workflows only smoke-test import <package>.

Adds a python-package-test matrix job covering the 13 packages whose suites currently pass — ~120 tests. Verified locally with the exact commands the job runs:

    cd packages/<pkg>
    uv sync --all-extras --python 3.12
    uv run --no-sync --with pytest --with pytest-asyncio pytest tests -v

Two constraints, both documented in comments in the workflow:

• Pinned to Python 3.12, not the SDK's 3.10–3.14 matrix. Several connector tests patch moss_connector_<x>.ingest.MossClient, but each package's __init__.py does from .ingest import ingest, shadowing the submodule with the function. unittest.mock resolves that target on 3.12+ and raises AttributeError on 3.10/3.11. Test-only the packages themselves are fine on 3.10.
• packages/moss-cli is excluded. moss completions bash|zsh exits 1 even when its fallback import succeeds (commands/completions.py), so tests/test_completions.py fails: 2 failed, 28 passed. Worth a follow-up PR that fixes the command and adds moss-cli to the matrix.

Type of Change

CI / tooling — no runtime code changes.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Codex review

No issues found.

[HarshaNalluru]

@igor17400 please sign the CLA #492 (comment)

[igor17400]

@HarshaNalluru Done!

[Copilot]

Pull request overview

Adds CI coverage for Python package test suites living under packages/*, addressing a gap where these tests were previously not executed in any workflow. This fits the repo’s multi-package structure by ensuring non-SDK Python packages get continuous validation in the main CI pipeline.

Changes:

• Introduces a new python-package-test GitHub Actions matrix job to run pytest for 13 selected packages under packages/*.
• Standardizes package test execution via uv sync --all-extras followed by uv run ... pytest tests -v.
• Pins the job to Python 3.12 and documents exclusions/constraints inline (notably excluding packages/moss-cli).

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