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/app/page.tsx

@@ -3,7 +3,6 @@
 import { useEffect, useState } from "react";
 import { Navbar } from "@/components/public/Navbar";
 import { HeroSection } from "@/components/public/HeroSection";
-import { KnowledgeCards } from "@/components/public/KnowledgeCards";
 import { AboutSection } from "@/components/public/AboutSection";
 import { CommunityLinksSection } from "@/components/public/CommunityLinksSection";
 import { MeetupsSection } from "@/components/public/MeetupsSection";
@@ -11,6 +10,7 @@ import { FAQSection } from "@/components/public/FAQSection";
 import { FinalCTASection } from "@/components/public/FinalCTASection";
 import { Footer } from "@/components/public/Footer";
 import { api } from "@/lib/api";
+import { formatMeetupCivilDate, getMeetupStartUtc } from "@/lib/meetupEventTime";
 
 export default function HomePage() {
   const [meetup, setMeetup] = useState<any>(null);
@@ -22,10 +22,18 @@ export default function HomePage() {
       .then((data: any) => {
         const all = Array.isArray(data) ? data : data?.meetups ?? [];
         const now = new Date();
-        // Keep only PUBLISHED events with a future date, sorted closest-first
+        // Keep only PUBLISHED events with a future start (Brussels wall time → UTC), sorted closest-first
         const upcoming = all
-          .filter((m: any) => m.status === "PUBLISHED" && m.date && new Date(m.date) > now)
-          .sort((a: any, b: any) => new Date(a.date).getTime() - new Date(b.date).getTime());
+          .filter((m: any) => {
+            if (m.status !== "PUBLISHED" || !m.date) return false;
+            const start = getMeetupStartUtc(m.date, m.time || "00:00");
+            return !Number.isNaN(start.getTime()) && start > now;
+          })
+          .sort(
+            (a: any, b: any) =>
+              getMeetupStartUtc(a.date, a.time || "00:00").getTime() -
+              getMeetupStartUtc(b.date, b.time || "00:00").getTime()
+          );
         setAllMeetups(upcoming);
         if (upcoming.length > 0) setMeetup(upcoming[0]);
       })
@@ -36,11 +44,14 @@ export default function HomePage() {
       .catch(() => {});
   }, []);
 
+  const featuredCivil = meetup ? formatMeetupCivilDate(meetup.date) : null;
   const meetupProps = meetup
     ? {
         id: meetup.id,
-        month: new Date(meetup.date).toLocaleString("en-US", { month: "short" }),
-        day: String(new Date(meetup.date).getDate()),
+        month: featuredCivil
+          ? featuredCivil.monthShort.charAt(0) + featuredCivil.monthShort.slice(1).toLowerCase()
+          : "TBD",
+        day: featuredCivil?.day ?? "--",
         title: meetup.title,
         location: meetup.location,
         time: meetup.time,
@@ -57,7 +68,6 @@ export default function HomePage() {
       <section id="about">
         <AboutSection />
       </section>
-      <KnowledgeCards />
       <CommunityLinksSection settings={settings} />
       <section id="upcoming-meetups">
         <MeetupsSection meetups={allMeetups} />