Fix Mermaid style check to exempt diagram types without style directive support

[Copilot]

hasMermaidStyling() required explicit style directives on all Mermaid blocks, but several Mermaid diagram types (quadrantChart, pie, gantt, gitGraph, timeline, mindmap, sankey) don't support style directives at all. This forced content authors to avoid these chart types in strict-v2 risk files.

• Test fix: Added INHERENTLY_STYLED_MERMAID pattern to recognize diagram types that are styled by the renderer, not by explicit directives
• Logic change: hasMermaidStyling() now uses every — each block must be either explicitly styled OR an inherently-styled type
• Content revert: Restored evening-analysis/risk-assessment.md back to quadrantChart (better fit for risk matrices than graph TD)

const INHERENTLY_STYLED_MERMAID = /```mermaid\s*\n\s*(quadrantChart|pie|gantt|gitGraph|timeline|mindmap|sankey)/;

function hasMermaidStyling(text: string): boolean {
  const blocks = text.match(MERMAID_BLOCK_PATTERN);
  if (!blocks) return false;
  return blocks.every(block =>
    MERMAID_STYLE_PATTERN.test(block) || INHERENTLY_STYLED_MERMAID.test(block)
  );
}

[github-actions]

🏷️ Automatic Labeling Summary

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

Applied Labels: testing,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

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[github-actions]

🔍 Lighthouse Performance Audit

Category	Score	Status
Performance	85/100	🟡
Accessibility	95/100	🟢
Best Practices	90/100	🟢
SEO	95/100	🟢

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Budget Compliance: Performance budgets enforced via budget.json

[Copilot]

Pull request overview

Updates the analysis quality validation so Mermaid diagram types that cannot use style directives (e.g. quadrantChart, pie) are no longer incorrectly flagged as “unstyled” in strict-v2 risk assessment files.

Changes:

• Added an INHERENTLY_STYLED_MERMAID regex to recognize Mermaid diagram types styled by the renderer rather than style directives.
• Updated hasMermaidStyling() to require that every Mermaid block is either explicitly styled or inherently styled.