fix(users): repair create delete and duplicate email handling

validation-suite/frontend/atlas/tests/users-query.test.mjs

@@ -0,0 +1,42 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { buildUsersQueryParams } from "../lib/users-query.js";
+
+test("builds query without empty optional filters", () => {
+  const params = buildUsersQueryParams({
+    page: 1,
+    pageSize: 20,
+    search: "",
+    role: "",
+    active: undefined,
+    sortBy: "created_at",
+    sortOrder: "desc"
+  });
+
+  assert.equal(params.toString(), "page=1&page_size=20&sort_by=created_at&sort_order=desc");
+});
+
+test("builds query with active filters", () => {
+  const activeParams = buildUsersQueryParams({
+    page: 1,
+    pageSize: 20,
+    search: "  Admin  ",
+    role: "admin",
+    active: true,
+    sortBy: "created_at",
+    sortOrder: "desc"
+  });
+
+  const inactiveParams = buildUsersQueryParams({
+    page: 1,
+    pageSize: 20,
+    search: "",
+    role: "",
+    active: false,
+    sortBy: "created_at",
+    sortOrder: "desc"
+  });
+
+  assert.equal(activeParams.toString(), "page=1&page_size=20&sort_by=created_at&sort_order=desc&search=Admin&role=admin&active=true");
+  assert.equal(inactiveParams.toString(), "page=1&page_size=20&sort_by=created_at&sort_order=desc&active=false");
+});