/servers/new and /login/callback call useSearchParams() directly, which
bails the page out of static rendering and fails `next build` during
prerender. Split each into a thin Suspense wrapper + inner component.
Latent since `next dev` never prerenders — only surfaces in a prod build.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>