fix: normalize Norwegian hreflang to no and align last-generation.json with documented schema

[Copilot]

Two schema/SEO inconsistencies in the breaking news article set.

Changes

• Norwegian hreflang — All 14 articles used hreflang="nb" in <link rel="alternate"> while the language switcher and Norwegian page itself used lang="no". Normalized to hreflang="no" everywhere.

<!-- before -->
<link rel="alternate" hreflang="nb" href="https://riksdagsmonitor.com/news/2026-02-26-breaking-security-reforms-no.html">

<!-- after -->
<link rel="alternate" hreflang="no" href="https://riksdagsmonitor.com/news/2026-02-26-breaking-security-reforms-no.html">

• last-generation.json schema — File was missing the four fields documented in news/metadata/README.md (generated, errors, types, status). Added them as top-level fields while preserving all existing keys for backward compatibility with current consumers.

{
  "timestamp": "2026-02-26T12:05:00.000Z",
  "generated": 14,
  "errors": 0,
  "types": "breaking",
  "status": "success",
  "generated_at": "2026-02-26T12:05:00.000Z",
  ...
}

---

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[github-actions]

🏷️ Automatic Labeling Summary

This PR has been automatically labeled based on the files changed and PR metadata.

Applied Labels: size-xs

Label Categories

• 🗳️ Content: news, dashboard, visualization, intelligence
• 💻 Technology: html-css, javascript, workflow, security
• 📊 Data: cia-data, riksdag-data, data-pipeline, schema
• 🌍 I18n: i18n, translation, rtl
• 🔒 ISMS: isms, iso-27001, nist-csf, cis-controls
• 🏗️ Infrastructure: ci-cd, deployment, performance, monitoring
• 🔄 Quality: testing, accessibility, documentation, refactor
• 🤖 AI: agent, skill, agentic-workflow

For more information, see .github/labeler.yml.