feat: integrate service worker + env validation + Web Vitals in layout

feat: update robots.txt to allow /llms.txt + add AI crawler rules

feat: add RelatedPrompts to prompt detail page for better internal linking

perf: sitemap uses revalidate=3600 instead of force-dynamic (reduces DB load)

feat: add /llms.txt route for AI discoverability

perf: add ISR revalidation (30s) to explore page

perf: add ISR revalidation to homepage (cache 60s instead of fresh DB every request)

fix: search rate limit now properly applies stricter limits for semantic search

fix: SSRF protection for Ollama URL + standardize error responses in /api/run

fix: remove fake totalRuns increment on page view (was double-counting)

Automated sync to Hugging Face