Show the running version next to the brand; bump to 0.2.1

Co-Authored-By: Claude <noreply@anthropic.com>

src/web.rs

@@ -285,10 +285,10 @@ async fn dispatch(request: Request) -> Result<Response> {
             json!({"oidc":config.oidc.is_some(),"password":config.password_form_available()});
         return match identity {
             Ok(i) => response(
-                json!({"user":i.user,"csrf":i.csrf,"auth":auth,"demo":crate::demo_runtime::active(),"demo_lifecycle":crate::demo_runtime::notice()}),
+                json!({"version":env!("CARGO_PKG_VERSION"),"user":i.user,"csrf":i.csrf,"auth":auth,"demo":crate::demo_runtime::active(),"demo_lifecycle":crate::demo_runtime::notice()}),
             ),
             Err(Error::Unauthorized) => response(
-                json!({"user":null,"auth":auth,"demo":crate::demo_runtime::active(),"demo_lifecycle":crate::demo_runtime::notice()}),
+                json!({"version":env!("CARGO_PKG_VERSION"),"user":null,"auth":auth,"demo":crate::demo_runtime::active(),"demo_lifecycle":crate::demo_runtime::notice()}),
             ),
             Err(e) => Err(e),
         };