fix: increase rate limit to 1000/15min, add WatchHistory error handling

backend/src/index.ts

@@ -1,13 +1,13 @@
-import express from "express";
 import cors from "cors";
-import helmet from "helmet";
-import morgan from "morgan";
-import rateLimit from "express-rate-limit";
-import { createServer } from "http";
-import { Server } from "socket.io";
 import dotenv from "dotenv";
+import express from "express";
+import rateLimit from "express-rate-limit";
 import fs from "fs";
+import helmet from "helmet";
+import { createServer } from "http";
+import morgan from "morgan";
 import path from "path";
+import { Server } from "socket.io";
 
 // BigInt JSON support - MUST BE BEFORE ROUTERS
 (BigInt.prototype as any).toJSON = function () {
@@ -61,12 +61,12 @@ app.use(
 	}),
 );
 
-// Rate limiting
+// Rate limiting - generous for small user base
 const limiter = rateLimit({
-	windowMs: 15 * 60 * 1000, // 15 minutes
-	max: 100, // limit each IP to 100 requests per windowMs
+	windowMs: 15 * 60 * 1000,
+	max: 1000,
 });
-app.use(limiter);
+app.use("/api", limiter);
 
 // Body parsing
 app.use(express.json({ limit: "10mb" }));