feat: add event creation script with random slugs

Add reusable script for creating events with secure random slugs.

- Create backend/scripts/create-event.js with CLI interface
- Add npm script 'event:create' to package.json
- Generate 8-character random hex slugs using crypto
- Include date validation and error handling
- Display event details and URL after creation

backend/package.json

@@ -14,7 +14,8 @@
     "prisma:seed:dev": "node prisma/seed.development.js",
     "prisma:seed:prod": "node prisma/seed.production.js",
     "prisma:studio": "prisma studio",
-    "cli": "node src/cli/index.js"
+    "cli": "node src/cli/index.js",
+    "event:create": "node scripts/create-event.js"
   },
   "keywords": [
     "webrtc",

backend/scripts/create-event.js

@@ -0,0 +1,70 @@
+#!/usr/bin/env node
+
+const { PrismaClient } = require('@prisma/client');
+const crypto = require('crypto');
+
+const prisma = new PrismaClient();
+
+/**
+ * Create a new event with a random slug
+ * Usage: node scripts/create-event.js <name> <location> <startDate> <endDate>
+ * Example: node scripts/create-event.js "Santa Swing" "Kraków, Poland" "2025-12-12" "2025-12-15"
+ */
+async function createEvent() {
+  try {
+    // Parse command-line arguments
+    const args = process.argv.slice(2);
+
+    if (args.length < 4) {
+      console.error('❌ Usage: node scripts/create-event.js <name> <location> <startDate> <endDate>');
+      console.error('   Example: node scripts/create-event.js "Santa Swing" "Kraków, Poland" "2025-12-12" "2025-12-15"');
+      process.exit(1);
+    }
+
+    const [name, location, startDate, endDate] = args;
+
+    // Validate dates
+    const start = new Date(startDate);
+    const end = new Date(endDate);
+
+    if (isNaN(start.getTime()) || isNaN(end.getTime())) {
+      console.error('❌ Invalid date format. Use YYYY-MM-DD format.');
+      process.exit(1);
+    }
+
+    if (end < start) {
+      console.error('❌ End date must be after start date.');
+      process.exit(1);
+    }
+
+    // Generate random slug (8 characters alphanumeric)
+    const slug = crypto.randomBytes(4).toString('hex');
+
+    // Create event
+    const event = await prisma.event.create({
+      data: {
+        name,
+        slug,
+        location,
+        startDate: start,
+        endDate: end,
+      },
+    });
+
+    console.log('✅ Event created successfully:');
+    console.log(`   ID: ${event.id}`);
+    console.log(`   Name: ${event.name}`);
+    console.log(`   Slug: ${event.slug}`);
+    console.log(`   Location: ${event.location}`);
+    console.log(`   Dates: ${event.startDate.toISOString().split('T')[0]} → ${event.endDate.toISOString().split('T')[0]}`);
+    console.log(`\n   URL: ${process.env.FRONTEND_URL || 'http://localhost'}/events/${event.slug}`);
+
+  } catch (error) {
+    console.error('❌ Error creating event:', error.message);
+    process.exit(1);
+  } finally {
+    await prisma.$disconnect();
+  }
+}
+
+createEvent();