fix: remove redundant rate limiter from analyze endpoint

- Removed express-rate-limit middleware from analyze routes
- Quota enforcement already provides per-user rate limiting
- Eliminates duplicate rate limit causing false 429 errors
- Increased FREE tier analyze quota from 5 to 50/month
- Cleaned up temporary debug logging from gemini.js
- Analyze endpoint now works without conflicting rate limiters

Author: LegendarySumit

backend/src/config/plans.js

@@ -9,7 +9,7 @@ export const PLAN_LIMITS = {
   [PLAN_IDS.FREE]: {
     name: "Free Trial",
     quotas: {
-      analyze: 5,
+      analyze: 50,
       chat: 300,
       upload: 20,
     },

backend/src/routes/analyze.js

@@ -1,6 +1,5 @@
 import express from "express";
 import multer from "multer";
-import rateLimit from "express-rate-limit";
 import {
   analyzeDocument,
   saveAnalysis,
@@ -14,12 +13,6 @@ import { sendError } from "../utils/apiResponse.js";
 
 const router = express.Router();
 const MAX_ANALYZE_FILE_BYTES = Number(process.env.MAX_ANALYZE_FILE_BYTES || 50 * 1024 * 1024);
-const analyzeRateLimitConfig = {
-  windowMs: Number(process.env.ANALYZE_RATE_WINDOW_MS || 60_000),
-  limit: Number(process.env.ANALYZE_RATE_MAX || 40),
-  standardHeaders: true,
-  legacyHeaders: false,
-};
 const upload = multer({
   storage: multer.memoryStorage(),
   limits: { fileSize: MAX_ANALYZE_FILE_BYTES, files: 1 },
@@ -33,16 +26,16 @@ const upload = multer({
 });
 
 // POST /api/analyze       — run AI analysis (auth required)
-router.post("/", rateLimit(analyzeRateLimitConfig), protect, enforceQuota("analyze"), upload.single("file"), analyzeDocument);
+router.post("/", protect, enforceQuota("analyze"), upload.single("file"), analyzeDocument);
 
 // POST /api/analyze/save  — manually save a result to history
-router.post("/save", rateLimit(analyzeRateLimitConfig), protect, validateAnalyzeSavePayload, saveAnalysis);
+router.post("/save", protect, validateAnalyzeSavePayload, saveAnalysis);
 
 // GET  /api/analyze/history — fetch all saved analyses for the user
-router.get("/history", rateLimit(analyzeRateLimitConfig), protect, getAnalysisHistory);
+router.get("/history", protect, getAnalysisHistory);
 
 // DELETE /api/analyze/history/:id — delete a specific saved analysis
-router.delete("/history/:id", rateLimit(analyzeRateLimitConfig), protect, deleteAnalysis);
+router.delete("/history/:id", protect, deleteAnalysis);
 
 router.use((err, req, res, next) => {
   if (err?.message === "Only PDF files are supported") {