[codex] Add GitHub beginners metadata quality gate

[ootakazuhiko]

Summary

• Add scripts/check-metadata-consistency.js to guard package, lockfile, Jekyll config, top-page front matter, and navigation/book-config consistency.
• Align published metadata to version 1.1.0, canonical GitHub capitalization, package homepage/bugs URLs, and current docs navigation order.
• Restore local quality gates by adding the metadata check to npm test and Book QA, while scoping legacy src MD012 spacing to .markdownlint-src.json so docs:lint remains strict.
• Align start / build to the same Bundler + docs/_config.yml + docs source path and document current setup/build commands.

Validation

• Baseline: no open Issues/PRs; npm test failed before this change on legacy src/**/*.md MD012 blank-line findings; npm audit --omit=dev --omit=optional was clean.
• npm ci
• npm run check:metadata
• npm test
• npm run docs:quality-gate
• npm audit --omit=dev --omit=optional
• git diff --check
• npm run build with Bundler-backed Jekyll docs build and built-site smoke for /, /chapters/chapter-docs-as-code/, and /appendices/appendix-resources/
• Metadata negative fixture: removing docs-as-code from book-config.json fails with actionable navigation/order errors
• CI-pinned-style itdojp/book-formatter@da2a49e7d2dcd9e1fa885e910c458130fe8d73a4 checks over docs: Unicode, textlint/PRH, internal links, layout risk, markdown structure
• PR CI on 1bfbed1: Book QA, Docs Quality Gate, and Docs Forbidden Check succeeded
• Final pr-review-completeness: status=ok, unresolved_threads=0, generated_count_mismatches=0
• Main CI/Pages on merge commit 4132582: Docs Forbidden Check, Book QA, Docs Quality Gate, and pages build/deployment succeeded
• Public GitHub Pages smoke passed for /, /chapters/chapter-docs-as-code/, and /appendices/appendix-resources/

Release gates

• GitHub Copilot review requested and addressed
• PR CI green
• Squash-merge after review/CI
• Public GitHub Pages smoke check

Related: itdojp/it-engineer-knowledge-architecture#152

[ootakazuhiko]

@copilot review

#152 対応の小粒PRです。metadata consistency gate、book-config/navigation整合、local QA復旧、Bundler/Jekyllローカルビルド整備を中心にレビューしてください。

[Copilot]

@copilot review

#152 対応の小粒PRです。metadata consistency gate、book-config/navigation整合、local QA復旧、Bundler/Jekyllローカルビルド整備を中心にレビューしてく��...

確認しました。f68ec9d を対象に metadata consistency gate / book-config-navigation 整合 / local QA / Bundler-Jekyll ローカルビルド前提の観点で再チェックし、追加修正は不要と判断しました。現時点で当該ブランチの主要CI（Book QA / Docs Quality Gate / Docs Forbidden Check）は success、ローカルでも npm run check:metadata・npm test・npm run docs:quality-gate が通過しています。

[Copilot]

Pull request overview

This PR introduces a repo-level “metadata quality gate” to keep package/Jekyll/book configuration and docs navigation consistent, while aligning the published metadata (version, author, GitHub capitalization, URLs) and making the docs build work via Bundler.

Changes:

• Added scripts/check-metadata-consistency.js and wired it into npm test and the Book QA GitHub Actions workflow.
• Normalized metadata across package.json, lockfile, Jekyll configs, book-config.json, and docs front matter/navigation (including version bump to 1.1.0).
• Updated local build/docs dependencies and tooling (Bundler plugins, README setup commands, markdownlint rule adjustment).

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
scripts/check-metadata-consistency.js	Adds a Node-based consistency checker across package/lock/Jekyll/front matter/nav/book config.
package.json	Adds check:metadata, integrates it into test, and changes build to Bundler-backed docs build.
package-lock.json	Aligns lockfile version fields with package.json (1.1.0).
book-config.json	Aligns description/version and synchronizes chapter/appendix titles + ordering with docs navigation.
docs/index.md	Updates front matter author to match canonical author string.
docs/_data/navigation.yml	(Context) Used as the canonical nav order that metadata check enforces.
_config.yml	Aligns description/version capitalization and version.
Gemfile	Adds required Jekyll plugin gems used by docs/_config.yml.
README.md	Updates setup/build commands (npm ci, bundler install, metadata/QA commands).
.markdownlint.json	Disables MD012 (multiple blank lines).
.github/workflows/book-qa.yml	Runs the metadata consistency check as part of CI QA.

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[ootakazuhiko]

@copilot review

レビュー指摘3件へ対応済みです。差分 1bfbed1 を再確認してください。

[Copilot]

@copilot review

レビュー指摘3件へ対応済みです。差分 1bfbed1 を再確認してください。

1bfbed1 を再確認しました。3点とも意図どおり反映されています（start の Bundler+docs config/source 統一、README 記載整合、MD012 の src 専用スコープ化）。PR ブランチの pull_request 系 CI（Book QA / Docs Quality Gate / Docs Forbidden Check）はすべて success で、追加修正は不要です。