Fix production environment variables

- Remove old Confluence variables
- Add NEXT_PUBLIC_API_URL for API access

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

terraform/cloudflare-dns.tf

@@ -0,0 +1,22 @@
+# Cloudflare DNS configuration
+provider "cloudflare" {
+  api_token = var.cloudflare_api_token
+}
+
+# Data source to find the zone
+data "cloudflare_zone" "main" {
+  count = var.domain_name != "" && var.cloudflare_api_token != "" ? 1 : 0
+  name  = var.domain_name
+}
+
+# Create CNAME record for API subdomain
+resource "cloudflare_record" "api" {
+  count   = var.domain_name != "" && var.cloudflare_api_token != "" ? 1 : 0
+  zone_id = data.cloudflare_zone.main[0].id
+  name    = "api"
+  content = replace(replace(aws_api_gateway_stage.api.invoke_url, "https://", ""), "/production", "")
+  type    = "CNAME"
+  ttl     = 120
+  proxied = false
+  comment = "API Gateway endpoint"
+}