refactor(integration): make hashicorp vault integration easier to use

* Makes `namespace` optional allowing to use self-hosted OSS hashicorp vault

frontend/src/helpers/string.ts

@@ -3,3 +3,12 @@ export const removeTrailingSlash = (str: string) => {
 
   return str.endsWith("/") ? str.slice(0, -1) : str;
 };
+
+export const isValidPath = (val: string): boolean => {
+  if (val.length === 0) return false;
+  if (val === "/") return true;
+
+  // Check for valid characters and no consecutive slashes
+  const validPathRegex = /^[a-zA-Z0-9-_.:]+(?:\/[a-zA-Z0-9-_.:]+)*$/;
+  return validPathRegex.test(val);
+}