feat: CLI command + gha workflow to contribute patches back to source

[kelly-sovacool]

Changes

adds syncweaver contribute command and corresponding gha workflow template to contribute patches back to source repos.

Issues

resolves #4

PR Checklist

(Strikethrough any points that are not applicable.)

• This comment contains a description of changes with justifications, with any relevant issues linked.
• Write unit tests for any new features, bug fixes, or other code changes.
• Update docs if there are any API changes.
• Update CHANGELOG.md with a short description of any user-facing changes and reference the PR number. Guidelines: https://keepachangelog.com/en/1.1.0/

[Copilot]

Pull request overview

This PR introduces an initial “contribute patch back upstream” capability by adding a syncweaver contribute CLI command plus a GitHub Actions workflow template, backed by new metadata-resolution and PR-opening logic in syncweaver.contribute_patch.

Changes:

• Add syncweaver contribute CLI subcommand that resolves lockfile/patch metadata and opens a PR in the source repository.
• Add syncweaver-contribute-patch.yml workflow template to apply a tracked patch to a source repo and open a PR via workflow_dispatch.
• Add unit tests covering token resolution, metadata resolution, and contribute command behavior.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
tests/test_contribute_patch.py	Adds tests for token resolution, lockfile-driven metadata resolution, and PR-opening flow.
tests/test_cli.py	Extends CLI tests to cover the new contribute command and help output.
src/syncweaver/templates/syncweaver-contribute-patch.yml	New workflow template to resolve patch metadata and open a PR in the source repo.
src/syncweaver/templates/init.py	Registers the new workflow template and updates template inventory docs/descriptions.
src/syncweaver/contribute_patch.py	Implements metadata resolution, token resolution, patch application + push + PR creation.
src/syncweaver/cli/main.py	Wires the new contribute command into the top-level CLI.
src/syncweaver/cli/contribute.py	Implements the syncweaver contribute Click command and its options.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 7 comments.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.