Add email verification, personal calendar feed, and full SEO implementation

- Customer accounts now require email verification (hashed, single-use,
  time-limited tokens) before they can request/confirm bookings, with
  resend flows on login/account/booking widget and rate limiting.
- Admins get a private, rotatable iCalendar (ICS) subscription feed of
  their confirmed bookings and public events, timezone-correct for
  Europe/Berlin including DST, never exposing meeting passwords.
- Adds a full SEO layer: per-page canonical/OG/Twitter metadata with
  CMS-editable overrides and content-derived fallbacks, a dynamic
  sitemap.xml and robots.txt driven by real published content, JSON-LD
  (Organization/LocalBusiness, WebSite, WebPage, BreadcrumbList, Service,
  Event, BlogPosting) that never fabricates data, and a CMS-managed
  redirect table for changed slugs.
- Global ANOUMA-naming audit: the brand name is never used to label
  personal account/calendar areas anywhere in the app, CMS, or emails.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

payload.config.ts

@@ -15,6 +15,7 @@ import { Customers } from "@/collections/Customers";
 import { Availability } from "@/collections/Availability";
 import { AvailabilityOverrides } from "@/collections/AvailabilityOverrides";
 import { BookingRequests } from "@/collections/BookingRequests";
+import { Redirects } from "@/collections/Redirects";
 
 import { Home } from "@/globals/Home";
 import { About } from "@/globals/About";
@@ -24,6 +25,7 @@ import { Contact } from "@/globals/Contact";
 import { Booking } from "@/globals/Booking";
 import { MeetingSettings } from "@/globals/MeetingSettings";
 import { BookingSettings } from "@/globals/BookingSettings";
+import { SEOSettings } from "@/globals/SEOSettings";
 
 const filename = fileURLToPath(import.meta.url);
 const dirname = path.dirname(filename);
@@ -61,8 +63,9 @@ export default buildConfig({
     Availability,
     AvailabilityOverrides,
     BookingRequests,
+    Redirects,
   ],
-  globals: [Home, About, AngeboteIntro, AktuellesIntro, Contact, Booking, MeetingSettings, BookingSettings],
+  globals: [Home, About, AngeboteIntro, AktuellesIntro, Contact, Booking, MeetingSettings, BookingSettings, SEOSettings],
   editor: lexicalEditor(),
   secret: process.env.PAYLOAD_SECRET || "",
   typescript: {