fix(web): fix personalities page dark mode theming and wire to API (#540)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/web/src/lib/api/client.ts

@@ -250,6 +250,11 @@ export async function apiRequest<T>(endpoint: string, options: ApiRequestOptions
       throw new Error(error.message);
     }
 
+    // 204 No Content responses have no body — return undefined cast to T
+    if (response.status === 204) {
+      return undefined as T;
+    }
+
     return await (response.json() as Promise<T>);
   } catch (err: unknown) {
     if (err instanceof DOMException && err.name === "AbortError") {