feat: enhance lottery system with participant import and prize config

- Fix ES module import issue in admin.service.ts (require -> import)
- Fix lottery reveal ghosting by hiding name particles on complete
- Add participant import from Excel with tag calculation
- Add prize configuration service with JSON persistence
- Constrain winners overlay to scroll area dimensions
- Fix macOS lsof syntax in stop script
- Add HorseRace view and renderer (WIP)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/server/package.json

@@ -17,27 +17,32 @@
   },
   "dependencies": {
     "@gala/shared": "workspace:*",
-    "express": "^4.21.2",
-    "socket.io": "^4.8.1",
-    "@socket.io/redis-adapter": "^8.3.0",
-    "ioredis": "^5.4.2",
     "@prisma/client": "^6.2.1",
-    "zod": "^3.24.1",
-    "cors": "^2.8.5",
-    "helmet": "^8.0.0",
+    "@socket.io/redis-adapter": "^8.3.0",
     "compression": "^1.7.5",
+    "cors": "^2.8.5",
     "dotenv": "^16.4.7",
+    "express": "^4.21.2",
+    "helmet": "^8.0.0",
+    "ioredis": "^5.4.2",
+    "multer": "^2.0.2",
+    "nanoid": "^5.0.9",
     "pino": "^9.6.0",
     "pino-pretty": "^13.0.0",
-    "nanoid": "^5.0.9"
+    "socket.io": "^4.8.1",
+    "uuid": "^13.0.0",
+    "xlsx": "^0.18.5",
+    "zod": "^3.24.1"
   },
   "devDependencies": {
-    "@types/express": "^5.0.0",
-    "@types/cors": "^2.8.17",
     "@types/compression": "^1.7.5",
+    "@types/cors": "^2.8.17",
+    "@types/express": "^5.0.0",
+    "@types/multer": "^2.0.0",
+    "@types/uuid": "^11.0.0",
     "prisma": "^6.2.1",
-    "tsx": "^4.19.2",
     "tsup": "^8.3.5",
+    "tsx": "^4.19.2",
     "typescript": "^5.7.3",
     "vitest": "^2.1.8"
   }