infra(object-storage): add sccache bucket to Terraform

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

infra/modules/object-storage/main.tf

@@ -42,3 +42,21 @@ resource "scaleway_object_bucket" "gitlab_artifacts" {
     enabled = false
   }
 }
+
+resource "scaleway_object_bucket" "sccache" {
+  name   = "${var.bucket_name_prefix}-sccache"
+  region = var.region
+
+  lifecycle_rule {
+    enabled = true
+    prefix  = ""
+
+    expiration {
+      days = 14
+    }
+  }
+
+  versioning {
+    enabled = false
+  }
+}

infra/modules/object-storage/outputs.tf

@@ -22,3 +22,8 @@ output "gitlab_artifacts_bucket_name" {
   description = "Name of the GitLab artifacts bucket"
   value       = scaleway_object_bucket.gitlab_artifacts.name
 }
+
+output "sccache_bucket_name" {
+  description = "Name of the sccache bucket"
+  value       = scaleway_object_bucket.sccache.name
+}