fix: update cookie SameSite policy for cross-origin support and switch PM2 to fork mode for tsx compatibility

Author: shivamxverma

backend/src/shared/helper.ts

@@ -8,8 +8,7 @@ export const jwtCookieOptions = (origin: string, isRefreshToken: boolean) => {
     return {
       httpOnly: true,
       secure: true,
-      sameSite: 'lax',
-      domain: '.verlyai.xyz',
+      sameSite: 'none', // Allow cross-origin requests (e.g. from Vercel to EC2 domain)
       maxAge: isRefreshToken
         ? JWT_TOKEN_MAX_AGE.REFRESH_TOKEN
         : JWT_TOKEN_MAX_AGE.ACCESS_TOKEN,

ecosystem.config.cjs

@@ -6,8 +6,8 @@ module.exports = {
       interpreter: 'node',
       interpreter_args: '--import tsx',
       cwd: './backend',
-      instances: 'max',       // Run in cluster mode across all CPU cores
-      exec_mode: 'cluster',
+      instances: 1,           // Run as 1 instance in fork mode to support tsx loader
+      exec_mode: 'fork',
       env: {
         NODE_ENV: 'production'
       }