Github Actions, auto versioning, avoid submitting internal files - #24

This PR automates versioning, generated-file updates, CI builds, tagging, and npm releases while excluding internal files from distributions.

Changes:

• Adds automated version synchronization and release hooks.
• Updates build commands, documentation, and generated metadata.
• Adds CI and release workflows.
• Configures package and archive exclusions.

Suppressed comments (4)

.gitattributes:2

• Trailing-slash directory patterns are not recursive in .gitattributes, so these entries do not apply export-ignore to the contents of .github or scripts. Those internal files can still be included in git archive source tarballs; use recursive patterns such as path/** instead.

.github/       export-ignore
scripts/       export-ignore

.github/workflows/ci.yml:36

• This condition is also true for tag pushes, including the vX.Y.Z tag created by npm version. A tag checkout is detached, so if the rebuild changes an artifact, git-auto-commit-action will try to commit/push from the tag and can fail; restrict this step to branch pushes.

        if: github.event_name == 'push'

.github/workflows/release.yml:28

• This rebuilds the tag checkout and then publishes the working tree, but the only post-build check compares version strings. If generated output differs from the tagged files, npm will publish artifacts that are not represented by the tag; fail when the distributable files change or publish only the checked-in artifacts.

      - name: Build (cake build)
        run: cake build

package.json:34

• git add -A stages every modified and untracked path during npm's version hook, so unrelated internal files can be included in the release commit and tag. Stage only package.json and the generated/versioned project files instead.

    "version": "node scripts/bump-coffee-version.js && cake build && git add -A"

• Files reviewed: 8/8 changed files
• Comments generated: 4
• Review effort level: Lite