Improve 1-apps/terraform.tfvars.sample files (#86)

* cloud-run-single sample tfvars

* Update

* Update

* Rename cloud run rag to clarify tooling and adjusting readmes

* Fix readme

* Add references with A2A

* Remove enable from ext lb config

Author: LucaPrete

README.md

@@ -1,5 +1,33 @@
+# ------------------------------------------------------------------------------
+# Load Balancer Configuration
+# ------------------------------------------------------------------------------
+# Default: Creates an External Application Load Balancer (HTTPS).
+# TODO: Replace "your-public-domain.com" with your actual public domain.
+# The domain must exist and point to your LB.
+# ------------------------------------------------------------------------------
+
 lbs_config = {
   external = {
-    domain = "your_domain.com"
+    domain = "your-public-domain.com"
   }
+
+  # ----------------------------------------------------------------------------
+  # OPTION: Internal Application Load Balancer
+  # Uncomment the block below to create an internal LB reachable via VPN/VPC.
+  # ----------------------------------------------------------------------------
+  # internal = {
+  #   enable = true
+  #   domain = "your-private-domain.com"
+  # }
 }
+
+# ------------------------------------------------------------------------------
+# Direct Access to Cloud Run for testing (No Load Balancer)
+# ------------------------------------------------------------------------------
+# To expose Cloud Run directly to the Internet without a Load Balancer:
+# 1. Uncomment the cloud_run_configs block below
+# 2. Optionally, set lbs_config.external.enable = false
+
+# cloud_run_configs = {
+#   ingress = "INGRESS_TRAFFIC_ALL"
+# }