`generateSlug` utility is dead code; SEO checker should suggest a corrected slug

[mayashavin]

Problem

src/utils/slug.ts exports generateSlug(text: string): string (lines 7–14), but no code in the project imports or calls it. It is dead code.

Additionally, src/tools/review-seo/deterministicSeoChecks.ts detects an invalid slug (line 66–74) and sets severity: 'warning' with a current value, but never sets a suggested value. The user sees the problem but gets no actionable fix.

Expected behaviour

• generateSlug should be used by runDeterministicSeoChecks to populate the suggested field when a slug is missing or invalid.
• The optimizeSeoWorkflow already applies suggested values for critical findings — this would extend the same logic to slug suggestions.

Files affected

• src/tools/review-seo/deterministicSeoChecks.ts
• src/utils/slug.ts

Example

Missing slug: suggested should be derived from frontmatter.title via generateSlug(frontmatter.title).
Invalid slug: suggested should be the sanitised version of the existing slug.