format: apply nixpkgs formatting to Nix files

- Run make format to ensure consistent Nix code style
- Apply nixpkgs-fmt formatting standards

common.nix

@@ -968,17 +968,17 @@ isoConfig
              echo "   Writing offline configuration..."
              if sudo tee -a "$TRAEFIK_ENV" >/dev/null <<EOF
 
-# OFFLINE/LOCAL DEVELOPMENT CONFIGURATION
-LETS_ENCRYPT_ENV=staging
-WILDCARDS_ENABLED=1
-SECRET_WILDCARD_CERT_VERSION=v1
-SECRET_WILDCARD_KEY_VERSION=v1
-COMPOSE_FILE="\$COMPOSE_FILE:compose.wildcard.yml"
+      # OFFLINE/LOCAL DEVELOPMENT CONFIGURATION
+      LETS_ENCRYPT_ENV=staging
+      WILDCARDS_ENABLED=1
+      SECRET_WILDCARD_CERT_VERSION=v1
+      SECRET_WILDCARD_KEY_VERSION=v1
+      COMPOSE_FILE="\$COMPOSE_FILE:compose.wildcard.yml"
 
-# Disable Let's Encrypt for local development
-TRAEFIK_ACME_CASERVER=
-TRAEFIK_ACME_EMAIL=
-EOF
+      # Disable Let's Encrypt for local development
+      TRAEFIK_ACME_CASERVER=
+      TRAEFIK_ACME_EMAIL=
+      EOF
              then
                echo "✅ Traefik configuration written successfully"
                echo "   Config file contents:"