build: enable alb to route codegen endpoints for cli

[field123]

Problem

Plasmic CLI commands fail with 404 errors because the CLI expects codegen endpoints on the main domain (integration.storefront.elasticpath.com), but our ALB only routes them
via the codegen subdomain (codegen.integration.storefront.elasticpath.com).

npx @plasmicapp/cli sync --projects PROJECT_ID
# Error: Invalid version. Must be a string. Got type "undefined"

Root Cause

• CLI Logic: Assumes codegen APIs are on the same host as studio for custom deployments
• Our Setup: Microservices with separate subdomains
• Result: CLI requests hit main WAB service instead of codegen service → 404

Solution

Add path-based ALB listener rules to route codegen endpoints from main domain to codegen service.

Changes

File: terraform/services/codegen/main.tf

• Added 3 aws_lb_listener_rule resources with higher priority than existing rules
• Maintains existing host-based routing for codegen subdomain