docs: add meta tags and landing page for use-cases section

[VasiliyRad]

Fix: Missing meta tags on use-cases landing page

Category: missing_meta_tags
Confidence: 95%

Changes

• website/docs/use-cases/use-cases/index.md — New file with frontmatter (SEO description) and body content (heading, intro, child page links)

Evidence

• Sentinel scan found missing description, og:title, and og:description on /docs/use-cases/use-cases
• The MkDocs Material theme reads page.meta.description from frontmatter and renders it as <meta name="description"> and <meta property="og:description">
• Without an index.md, the section had no meta tags and poor link preview when shared on social media or Slack

Validation

• Description is 155 characters, SEO-appropriate, specific to section content
• Body content includes heading, intro paragraph, and links to all 3 child pages
• Without body content the page would be blank — this prevents that regression

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Generated by Elva from Sentinel findings. Please review before merging.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
see 25 files with indirect coverage changes

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