revert: drop visitor CTA button and public visit endpoint

app/api/public/visit/route.ts

@@ -1,12 +0,0 @@
-import { NextRequest, NextResponse } from 'next/server';
-import { db, guests } from '@/lib/db';
-import { USR_COOKIE, buildCookie, isSecureCookie } from '@/lib/auth/cookies';
-
-const ONE_YEAR = 60 * 60 * 24 * 365;
-
-export async function POST(request: NextRequest) {
-  const [row] = await db.insert(guests).values({ name: 'Visitante' }).returning();
-  const headers = new Headers();
-  headers.append('Set-Cookie', buildCookie(USR_COOKIE, row.id, isSecureCookie(request), ONE_YEAR));
-  return NextResponse.json({ success: true, guestId: row.id }, { headers });
-}