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

backend/prisma/migrations/20260403120000_add_organizer/migration.sql

@@ -0,0 +1,47 @@
+-- CreateTable
+CREATE TABLE "Organizer" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "name" TEXT NOT NULL,
+    "slug" TEXT NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL
+);
+
+CREATE UNIQUE INDEX "Organizer_slug_key" ON "Organizer"("slug");
+
+INSERT INTO "Organizer" ("id", "name", "slug", "createdAt", "updatedAt")
+VALUES (
+    '00000000-0000-4000-8000-000000000001',
+    'Belgian Bitcoin Embassy',
+    'belgian-bitcoin-embassy',
+    datetime('now'),
+    datetime('now')
+);
+
+-- RedefineTables
+PRAGMA defer_foreign_keys=ON;
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "new_Meetup" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "title" TEXT NOT NULL,
+    "description" TEXT NOT NULL,
+    "date" TEXT NOT NULL,
+    "time" TEXT NOT NULL,
+    "location" TEXT NOT NULL,
+    "link" TEXT,
+    "imageId" TEXT,
+    "status" TEXT NOT NULL DEFAULT 'DRAFT',
+    "featured" BOOLEAN NOT NULL DEFAULT false,
+    "visibility" TEXT NOT NULL DEFAULT 'PUBLIC',
+    "organizerId" TEXT NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    CONSTRAINT "Meetup_organizerId_fkey" FOREIGN KEY ("organizerId") REFERENCES "Organizer" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+INSERT INTO "new_Meetup" ("createdAt", "date", "description", "featured", "id", "imageId", "link", "location", "organizerId", "status", "time", "title", "updatedAt", "visibility")
+SELECT "createdAt", "date", "description", "featured", "id", "imageId", "link", "location", '00000000-0000-4000-8000-000000000001', "status", "time", "title", "updatedAt", "visibility" FROM "Meetup";
+DROP TABLE "Meetup";
+ALTER TABLE "new_Meetup" RENAME TO "Meetup";
+CREATE INDEX "Meetup_organizerId_idx" ON "Meetup"("organizerId");
+PRAGMA foreign_keys=ON;
+PRAGMA defer_foreign_keys=OFF;

backend/prisma/schema.prisma

@@ -17,8 +17,17 @@ model User {
   updatedAt   DateTime @updatedAt
 }
 
+model Organizer {
+  id        String   @id @default(uuid())
+  name      String
+  slug      String   @unique
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+  meetups   Meetup[]
+}
+
 model Meetup {
-  id          String   @id @default(uuid())
+  id          String    @id @default(uuid())
   title       String
   description String
   date        String
@@ -26,11 +35,13 @@ model Meetup {
   location    String
   link        String?
   imageId     String?
-  status      String   @default("DRAFT") // DRAFT, PUBLISHED, CANCELLED (Upcoming/Past derived from date)
-  featured    Boolean  @default(false)
-  visibility  String   @default("PUBLIC") // PUBLIC, HIDDEN
-  createdAt   DateTime @default(now())
-  updatedAt   DateTime @updatedAt
+  status      String    @default("DRAFT") // DRAFT, PUBLISHED, CANCELLED (Upcoming/Past derived from date)
+  featured    Boolean   @default(false)
+  visibility  String    @default("PUBLIC") // PUBLIC, HIDDEN
+  organizerId String
+  organizer   Organizer @relation(fields: [organizerId], references: [id], onDelete: Restrict)
+  createdAt   DateTime  @default(now())
+  updatedAt   DateTime  @updatedAt
 }
 
 model Media {

backend/prisma/seed.ts

@@ -56,6 +56,16 @@ async function main() {
     });
   }
 
+  const defaultOrganizer = await prisma.organizer.upsert({
+    where: { slug: 'belgian-bitcoin-embassy' },
+    update: {},
+    create: {
+      id: '00000000-0000-4000-8000-000000000001',
+      name: 'Belgian Bitcoin Embassy',
+      slug: 'belgian-bitcoin-embassy',
+    },
+  });
+
   const existingMeetup = await prisma.meetup.findFirst({
     where: { title: 'Monthly Bitcoin Meetup' },
   });
@@ -70,8 +80,9 @@ async function main() {
         time: '19:00',
         location: 'Brussels, Belgium',
         link: 'https://meetup.com/example',
-        status: 'UPCOMING',
+        status: 'PUBLISHED',
         featured: true,
+        organizerId: defaultOrganizer.id,
       },
     });
   }