chore(release): release Python packages (dotpromptz 0.2.0, dotpromptz-handlebars 0.2.0)

[huangjeff5]

Version bump for the first pure-Python release: dotpromptz 0.2.0 and dotpromptz-handlebars 0.2.0 (#620, #621, #626). release-please can't run until RELEASE_PLEASE_TOKEN is replaced, so this follows the manual flow from #614.

Main Changes

• Both packages go to 0.2.0: dotpromptz has breaking changes (private modules, {{json}} raises TypeError), and under 0.x a breaking change bumps the minor. 0.2.0 also matches the dotpromptz-handlebars>=0.2.0 floor dotpromptz now requires.

• Manifest catches up to PyPI: .release-please-manifest.json moves both Python entries to 0.2.0. It still said dotpromptz 0.1.6 and handlebars 0.1.9, so a revived release-please would have proposed the wrong versions.

• Dropped release-as: 0.2.0: it was only there to bootstrap this release. Left in, it pins every future handlebars release PR to 0.2.0.

• Handlebars changelog compares from 0.1.10: 0.1.10 shipped to PyPI from a branch, so the 0.2.0 diff link starts there rather than 0.1.9.

• Publish with twine 7: hatchling 1.32 writes Metadata-Version: 2.5, and pypa/gh-action-pypi-publish v1.13 bundles twine 6, which rejects it (InvalidDistribution: '2.5' is not a valid metadata version). Both publish workflows move to v1.14.2 (twine 7). Same fix as the unmerged fix(ci): publish dotpromptz with a client that accepts metadata 2.5 #619, which was a workaround for 0.1.6.

Release (already done from this branch)

1. dotpromptz-handlebars-0.2.0: the release-triggered run failed on twine 6, so it was re-published via workflow_dispatch from this branch. Published, and the smoke test passed on Python 3.10–3.14.
2. dotpromptz-0.2.0: tagged at 86dfd00, so the release-triggered run uses the twine 7 workflow.

Verified locally

• 836 tests pass.
• Built both wheels (py3-none-any) and installed them into a clean 3.12 venv.
• Dotprompt().render('Hello {{name}}!') returns Hello World!.
• The legacy import paths still resolve: dotpromptz.dotprompt and dotpromptz.typing (genkit 0.12.0), handlebarrz (dotpromptz 0.1.x).