Add complete CI/CD workflows and release automation

[konard]

Summary

This PR adds complete CI/CD workflows and release automation for both JavaScript and Python packages, fully integrated with the templates from:

• js-ai-driven-development-pipeline-template
• python-ai-driven-development-pipeline-template

JavaScript CI/CD (.github/workflows/js.yml)

✅ All features from the template:

• Changeset validation for PRs
• Linting with ESLint, Prettier, and jscpd
• Testing on Node.js 22 across Ubuntu, macOS, and Windows
• Automated npm publishing with OIDC trusted publishing
• Manual release support (instant and changeset-pr modes)
• Complete release automation with GitHub releases

Python CI/CD (.github/workflows/python.yml)

✅ All features from the template:

• Changelog fragment validation using scriv
• Linting with Ruff and type checking with mypy
• Testing with pytest and coverage reporting (with Codecov integration)
• Automated PyPI publishing with OIDC trusted publishing
• Manual release support with version bumping
• Complete release automation with GitHub releases

Configuration Files Added

JavaScript

• .changeset/ - Changeset configuration and files
• .prettierrc, .prettierignore - Prettier formatting rules
• .jscpd.json - Code duplication detection config
• eslint.config.js - ESLint linting rules

Python

• changelog.d/ - Scriv changelog fragments
• .ruff.toml - Ruff linting and formatting config
• .pre-commit-config.yaml - Pre-commit hooks configuration

Scripts Added

JavaScript (js/scripts/)

• changeset-version.mjs - Version management with changesets
• create-github-release.mjs - GitHub release creation
• create-manual-changeset.mjs - Manual changeset creation
• format-github-release.mjs - Release notes formatting
• format-release-notes.mjs - Release notes generation
• instant-version-bump.mjs - Quick version bumping
• publish-to-npm.mjs - npm publishing with OIDC
• setup-npm.mjs - npm configuration for trusted publishing
• validate-changeset.mjs - Changeset validation
• version-and-commit.mjs - Version updates and commits

Python (python/scripts/)

• bump_version.py - Version bumping utility
• check_file_size.py - File size validation
• create_github_release.py - GitHub release creation
• create_manual_changeset.py - Manual changelog fragment creation
• format_release_notes.py - Release notes formatting
• publish_to_pypi.py - PyPI publishing
• validate_changeset.py - Changelog fragment validation
• version_and_commit.py - Version updates and commits

Package Updates

JavaScript (package.json)

Added dev dependencies:

• @changesets/cli - Changeset management
• eslint, eslint-config-prettier, eslint-plugin-prettier - Linting
• husky - Git hooks
• jscpd - Code duplication detection
• lint-staged - Staged file linting
• prettier - Code formatting

Python (pyproject.toml)

Added dev dependencies:

• scriv[toml] - Changelog management (equivalent to changesets)

CI Status

All workflows are passing:

• ✅ JavaScript CI/CD
• ✅ Python CI/CD
• ✅ Tests

Next Steps

Once merged, the automated release workflows will:

1. Detect version changes in package.json or pyproject.toml
2. Automatically publish to npm and PyPI
3. Create GitHub releases with formatted changelog

For manual releases:

• JavaScript: Use workflow_dispatch on js.yml with instant or changeset-pr mode
• Python: Use workflow_dispatch on python.yml with version bump type

Fixes

Fixes #15

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[konard]

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