fix(gitea): use Recreate strategy to prevent LevelDB lock conflict

SQLite and LevelDB can't be accessed by two pods simultaneously.
RollingUpdate starts a new pod before the old one stops, causing
the queue lock to fail on startup. Recreate terminates the old
pod first.

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

infrastructure/terraform/gitea.tf

@@ -89,6 +89,10 @@ resource "helm_release" "gitea" {
       storageClass = "local-path"
     }
 
+    strategy = {
+      type = "Recreate"
+    }
+
     resources = {
       requests = { cpu = "100m", memory = "256Mi" }
       limits   = { cpu = "500m", memory = "512Mi" }