DSH Remote Console 0.6.6 — release-process release

Release-process release: the plugin behaves exactly like 0.6.5; everything here is about how a release is cut.

Added

• Release process: CI workflow (tests + release metadata) and a release workflow that
  validates the tag against package.json, publishes to npm with provenance through
  Trusted Publishing, and attaches the packed .tgz to the GitHub release.
• CONTRIBUTING.md / CONTRIBUTING.zh.md, AGENTS.md, a pull request template, and a
  real-device release checklist.
• scripts/check-release.mjs: one check for version / client VERSION / CHANGELOG section /
  market index consistency.
• GitHub Pages serves the market index from the repository (market/index.json), so the
  index no longer depends on a CDN's branch cache. .nojekyll added.

Changed

• CHANGELOG.md follows Keep a Changelog with an Unreleased section and compare links.

Install / update

• npm: dsh-remote-console
• Plugin market index: https://cccodder.github.io/dsh-remote-console/market/index.json
• This is the first version published by the new release workflow: tag/version validation, tests, npm publish with provenance (Trusted Publishing), and the packed .tgz attached to this release.