fix: global bigint serialization

backend/src/index.ts

@@ -9,6 +9,11 @@ import dotenv from "dotenv";
 import fs from "fs";
 import path from "path";
 
+// BigInt JSON support - MUST BE BEFORE ROUTERS
+(BigInt.prototype as any).toJSON = function () {
+	return this.toString();
+};
+
 const envPath =
 	["../.env", "../../.env", ".env"]
 		.map((p) => path.resolve(process.cwd(), p))
@@ -16,17 +21,17 @@ const envPath =
 
 dotenv.config({ path: envPath });
 
-import { prisma } from "./utils/prisma";
 import { errorHandler } from "./middleware/errorHandler";
+import { adminRouter } from "./routes/admin";
 import { authRouter } from "./routes/auth";
+import { overseerRouter } from "./routes/overseer";
+import { tautulliRouter } from "./routes/tautulli";
+import { transactionsRouter } from "./routes/transactions";
 import { userRouter } from "./routes/users";
 import { walletRouter } from "./routes/wallet";
-import { transactionsRouter } from "./routes/transactions";
-import { adminRouter } from "./routes/admin";
-import { tautulliRouter } from "./routes/tautulli";
-import { overseerRouter } from "./routes/overseer";
 import { webhookRouter } from "./routes/webhooks";
 import { setupSocketHandlers } from "./services/socket";
+import { prisma } from "./utils/prisma";
 
 const app = express();
 const httpServer = createServer(app);