improve vault manager, refactor vault operations into shared service.

ui/bootstrap.js

@@ -0,0 +1,11 @@
+import { vaultService } from "../services/vault-service.js";
+
+export function showVaultManager() {
+  if (!document.querySelector(".workspace")) return;
+  if (document.querySelector(".vault-manager-overlay")) return;
+
+  new window.IgnisUI.VaultManager({
+    target: document.body,
+    props: { vaultService },
+  });
+}