feat: add Prisma schema (MySQL) and Docker Compose for db/redis

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

docker-compose.yml

@@ -0,0 +1,23 @@
+services:
+  db:
+    image: mysql:8.0
+    restart: unless-stopped
+    environment:
+      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD:-devpassword}
+      MYSQL_DATABASE: meet
+    ports:
+      - "3306:3306"
+    volumes:
+      - db_data:/var/lib/mysql
+
+  redis:
+    image: redis:7-alpine
+    restart: unless-stopped
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis_data:/data
+
+volumes:
+  db_data:
+  redis_data: