feat: integrate Sentry error monitoring for client and backend

backend/.env.example

@@ -60,4 +60,9 @@ RATE_LIMIT_ADMIN_MAX=100
 RATE_LIMIT_ADMIN_WINDOW_HOURS=1
 
 # External API Keys (optional)
-ANTHROPIC_API_KEY=your_anthropic_api_key_for_classification
+ANTHROPIC_API_KEY=your_anthropic_api_key_for_classification  
+# Sentry  
+SENTRY_DSN=your_sentry_dsn_here  
+SENTRY_AUTH_TOKEN=your_sentry_auth_token_here  
+SENTRY_ORG=your_sentry_org_here  
+SENTRY_PROJECT=your_sentry_project_here 

backend/package.json

@@ -14,6 +14,8 @@
     "test": "jest"
   },
   "dependencies": {
+    "@sentry/node": "^10.46.0",
+    "@sentry/profiling-node": "^10.46.0",
     "@supabase/supabase-js": "^2.47.10",
     "@types/cookie-parser": "^1.4.10",
     "@types/uuid": "^10.0.0",

backend/src/index.ts

@@ -1,9 +1,21 @@
 import express from 'express';
 import cookieParser from 'cookie-parser';
 import dotenv from 'dotenv';
+import * as Sentry from '@sentry/node';
+import { nodeProfilingIntegration } from '@sentry/profiling-node';
+
 // Load environment variables before importing other modules
 dotenv.config();
 
+Sentry.init({
+  dsn: process.env.SENTRY_DSN,
+  environment: process.env.NODE_ENV,
+  integrations: [nodeProfilingIntegration()],
+  tracesSampleRate: 0.1,
+  profilesSampleRate: 0.1,
+});
+
+
 import logger from './config/logger';
 import { requestIdMiddleware } from './middleware/requestContext';
 import { requestLoggerMiddleware } from './middleware/requestLogger';
@@ -23,6 +35,10 @@ import { expiryService } from './services/expiry-service';
 import { scheduleAutoResume } from './jobs/auto-resume';
 
 const app = express();
+
+// Add Sentry request handler before routes
+app.use(Sentry.Handlers.requestHandler());
+
 const PORT = process.env.PORT || 3001;
 const ADMIN_API_KEY = process.env.ADMIN_API_KEY || 'development-admin-key';
 
@@ -178,6 +194,8 @@ app.post('/api/admin/expiry/process', createAdminLimiter(), adminAuth, async (re
   }
 });
 
+// Add Sentry error handler after all routes
+app.use(Sentry.Handlers.errorHandler());
 
 // Start server
 const server = app.listen(PORT, async () => {

backend/src/middleware/auth.ts

@@ -2,6 +2,7 @@ import { Request, Response, NextFunction } from 'express';
 import { supabase } from '../config/database';
 import logger from '../config/logger';
 import { setRequestUserId } from './requestContext';
+import * as Sentry from '@sentry/node';
 
 export interface AuthenticatedRequest extends Request {
   user?: {
@@ -57,6 +58,8 @@ export async function authenticate(
       email: user.email || '',
     };
     setRequestUserId(user.id);
+    Sentry.setUser({ id: user.id, email: user.email });
+
 
     next();
   } catch (error) {
@@ -95,7 +98,9 @@ export async function optionalAuthenticate(
           email: user.email || '',
         };
         setRequestUserId(user.id);
+        Sentry.setUser({ id: user.id, email: user.email });
       }
+
     }
 
     next();