feat: organizers, meetups UI, Plausible analytics, and migration tooling

- Add organizer model/API, admin and public organizer pages, meetup cards
- Refresh events/home/contact; add calendar dialog and carousel components
- Optional Plausible via NEXT_PUBLIC_PLAUSIBLE_* env vars in root layout
- Prisma migration, seed updates, baseline-and-migrate script

Made-with: Cursor

frontend/components/public/MeetupsSection.tsx

@@ -1,5 +1,7 @@
-import { MapPin, Clock, ArrowRight, CalendarPlus } from "lucide-react";
+import { MapPin, Clock, ArrowRight } from "lucide-react";
 import Link from "next/link";
+import { AddToCalendarButton } from "@/components/public/AddToCalendarDialog";
+import { formatMeetupCivilDate } from "@/lib/meetupEventTime";
 
 interface MeetupData {
   id?: string;
@@ -9,21 +11,13 @@ interface MeetupData {
   location?: string;
   link?: string;
   description?: string;
+  organizer?: { name: string; slug?: string };
 }
 
 interface MeetupsSectionProps {
   meetups: MeetupData[];
 }
 
-function formatMeetupDate(dateStr: string) {
-  const d = new Date(dateStr);
-  return {
-    month: d.toLocaleString("en-US", { month: "short" }).toUpperCase(),
-    day: String(d.getDate()),
-    full: d.toLocaleString("en-US", { weekday: "long", month: "long", day: "numeric", year: "numeric" }),
-  };
-}
-
 export function MeetupsSection({ meetups }: MeetupsSectionProps) {
   return (
     <section className="py-24 px-8 border-t border-zinc-800/50">
@@ -36,14 +30,7 @@ export function MeetupsSection({ meetups }: MeetupsSectionProps) {
             <h2 className="text-3xl font-black tracking-tight">Upcoming Meetups</h2>
           </div>
           <div className="hidden md:flex items-center gap-4">
-            <a
-              href="/calendar.ics"
-              title="Subscribe to get all future meetups automatically"
-              className="flex items-center gap-1.5 text-xs text-on-surface-variant/60 hover:text-primary border border-zinc-700 hover:border-primary/50 rounded-lg px-3 py-1.5 transition-all"
-            >
-              <CalendarPlus size={14} />
-              Add to Calendar
-            </a>
+            <AddToCalendarButton />
             <Link
               href="/events"
               className="flex items-center gap-2 text-sm text-primary font-semibold hover:gap-3 transition-all"
@@ -62,7 +49,10 @@ export function MeetupsSection({ meetups }: MeetupsSectionProps) {
         ) : (
           <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-5">
             {meetups.map((meetup, i) => {
-              const { month, day, full } = formatMeetupDate(meetup.date);
+              const civil = formatMeetupCivilDate(meetup.date);
+              const month = civil?.monthShort ?? "—";
+              const day = civil?.day ?? "--";
+              const full = civil?.full ?? "";
               const href = meetup.id ? `/events/${meetup.id}` : "#upcoming-meetups";
 
               return (
@@ -92,6 +82,13 @@ export function MeetupsSection({ meetups }: MeetupsSectionProps) {
                     </p>
                   )}
 
+                  <p className="text-[11px] text-on-surface-variant/50 font-medium uppercase tracking-wide mb-2">
+                    Organized by{" "}
+                    <span className="text-on-surface-variant/70 normal-case tracking-normal">
+                      {meetup.organizer?.name || "Belgian Bitcoin Embassy"}
+                    </span>
+                  </p>
+
                   <div className="flex flex-col gap-1.5 mt-auto pt-4 border-t border-zinc-800/60">
                     {meetup.location && (
                       <p className="flex items-center gap-1.5 text-xs text-on-surface-variant/60">
@@ -123,13 +120,7 @@ export function MeetupsSection({ meetups }: MeetupsSectionProps) {
           >
             All events <ArrowRight size={16} />
           </Link>
-          <a
-            href="/calendar.ics"
-            className="flex items-center gap-1.5 text-xs text-on-surface-variant/60 hover:text-primary border border-zinc-700 hover:border-primary/50 rounded-lg px-3 py-1.5 transition-all"
-          >
-            <CalendarPlus size={14} />
-            Add to Calendar
-          </a>
+          <AddToCalendarButton />
         </div>
       </div>
     </section>