feat: implement Python CI action with SAST, SCA, lint, build, test, version, package, release, reintegrate

[hbahadorzadeh]

Summary

• Implements the full Pipery CI pipeline for Python as a GitHub composite action
• Steps: SAST · SCA · lint · build · test · versioning · packaging · release · reintegration
• All steps are individually skippable via inputs or .github/pipery/config.yaml
• Commands run via psh (pipery-shell) to produce structured pipery.jsonl logs
• Shared steps (SAST, SCA, versioning, reintegration) delegate to pipery-steps CLI from pipery-tooling
• Test scenarios cover happy path, package manager variants, and expected-failure cases (lint errors, failing tests)

Test plan

• pipery-actions test --repo . passes all test specs locally
• CI workflow runs pipery-test.yml reusable workflow on push
• Release workflow runs pipery-release.yml reusable workflow on dispatch
• releases/v0 branch contains all src/ scripts so github.action_path resolves correctly

🤖 Generated with Claude Code

[gemini-code-assist]

Code Review

This pull request introduces a comprehensive Python CI GitHub Action that automates SAST, SCA, linting, building, testing, versioning, and releasing. The implementation includes a suite of shell scripts, a configuration reader, and various test fixtures to validate different package managers and failure scenarios. Feedback focuses on improving the reliability and integration of the action: the configuration loading logic needs to be properly integrated into the workflow using $GITHUB_ENV, and tool installation steps should avoid using '|| true' to prevent silent failures. Additionally, improvements were suggested to ensure version string integrity by not capturing stderr, adding sudo for system binary installation, and making the reintegration target branch configurable.