refactor: rename site bcn01 to BCN01-LAB

- Rename sites/bcn01/ -> sites/BCN01-LAB/
- Update S3 backend key: bcn01/terraform.tfstate -> BCN01-LAB/terraform.tfstate
- Rename Terraform module: bcn01 -> bcn01_lab
- Update working-directory in apply.yml and plan.yml
- Update job/step names to BCN01-LAB

NOTA: mover manualmente en S3 el objeto
  bcn01/terraform.tfstate  ->  BCN01-LAB/terraform.tfstate
antes de hacer terraform init en el nuevo directorio.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

sites/BCN01-LAB/main.tf

@@ -10,7 +10,7 @@ terraform {
 
   backend "s3" {
     bucket         = "eqt-terraform-state-629066559706-us-east-1-an"
-    key            = "bcn01/terraform.tfstate"
+    key            = "BCN01-LAB/terraform.tfstate"
     region         = "us-east-1"
     dynamodb_table = "terraform-locks"
     encrypt        = true
@@ -20,7 +20,7 @@ terraform {
 provider "meraki" {}
 
 # Llamada al módulo meraki-site
-module "bcn01" {
+module "bcn01_lab" {
   source = "../../modules/meraki-site"
 
   organization_name = var.organization_name