3 docs tagged with "middleware"

Verified: 2026-06-11. Two related Next.js 16 App Router production failures, found and fixed across PewSearch, ITW, and churchwiseai-web on 2026-06-09/10. Both are invisible in dev and in "build passes" checks — they only show in HTTP status codes and the prerender manifest.

How custom vanity URLs work for Pro Website churches — middleware routing at /[vanity] and /s/[slug], how they're stored in premium_churches, and SEO implications

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