refactor layout

* ui polishing
* frontend and backend fixes

apps/client/src/lib/utils.ts

@@ -0,0 +1,15 @@
+export function formatMemberCount(memberCount: number): string {
+  if (memberCount === 1) {
+    return "1 member";
+  } else {
+    return `${memberCount} members`;
+  }
+}
+
+export function extractPageSlugId(input: string): string {
+  if (!input) {
+    return undefined;
+  }
+  const parts = input.split("-");
+  return parts.length > 1 ? parts[parts.length - 1] : input;
+}