feat(release): migrate Wright lifecycle to release-plz

[Teakowa]

Summary

• migrate Wright's release lifecycle to release-plz in git-only mode, with one vX.Y.Z product tag owned by wright-cli
• keep the Release PR's Cargo.toml, Cargo.lock, and checked-in dist/ metadata synchronized
• route the release-plz tag and merge commit into the existing native/npm/package-manager pipeline through a reusable workflow
• keep the GitHub Release draft until gates, artifacts, manifests, Homebrew, and registry publication complete
• remove the manual version-input/tag workflow and make npm registry publication safe to retry

Why

Wright is distributed as native binaries, npm packages, and package-manager metadata rather than crates.io packages. release-plz now owns the Release PR, version, tag, and draft Release lifecycle without publishing the internal workspace crates or relying on a follow-up tag workflow that the default GITHUB_TOKEN cannot trigger.

Validation

• actionlint .github/workflows/release-plz.yml .github/workflows/release.yml
• yamllint -d relaxed .github/workflows/release-plz.yml .github/workflows/release.yml
• cargo metadata --locked --no-deps --format-version 1
• python3 scripts/verify-dist.py
• python3 -m unittest discover -s compatibility/tests (18 tests, 1 skipped)
• git diff --check

Fixes #166