fix(release): enable v0.1.0 publishing

[cyfyifanchen]

Summary

• Match standard root-package release tags such as v0.1.0.
• Keep the existing exact version guard: the tag must equal the version in pyproject.toml.

Validation

• git diff --check
• Verified v0.1.0 matches the workflow trigger, while skillcorpus-plugins-v0.2.0 does not.
• Existing CI will run repository gates, tests, package build, and package-content checks.

Closes #13.