fix: extend S3 lifecycle rule to cover root-level backup objects across all stacks (#36)

* Initial plan

* fix: remove archive/ prefix from S3 lifecycle rule to cover root-level objects

The archive-to-glacier rule had prefix: "archive/" which caused pre-migration
backup files written to the bucket root to be excluded from any transition
policy. Removing the prefix makes the rule apply to all objects in the bucket,
ensuring root-level dump files also transition to Glacier after 30 days.

Closes #4

* fix: remove archive/ prefix from lifecycle rule in forgejo-replica-stack.ts

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

lib/forgejo-replica-stack.ts

@@ -21,7 +21,6 @@ export class ForgejoReplicaStack extends cdk.Stack {
       lifecycleRules: [
         {
           id: "archive-to-glacier",
-          prefix: "archive/",
           transitions: [
             {
               storageClass: s3.StorageClass.GLACIER,

lib/forgejo-stack.ts

@@ -75,7 +75,6 @@ export class ForgejoStack extends cdk.Stack {
       lifecycleRules: [
         {
           id: "archive-to-glacier",
-          prefix: "archive/",
           transitions: [
             { storageClass: s3.StorageClass.GLACIER, transitionAfter: cdk.Duration.days(30) },
           ],