The lint lets an invite form ask for a phone number instead of an address

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GT37Z1Xtfd9pUuQtMTg6Yt

src/content/validate.rs

@@ -278,9 +278,12 @@ pub fn validate_questions(
                         .flat_map(|f| &f.requirements)
                         .any(|r| r.name == name && !r.optional)
                 };
-                if !has("name") || !has("email") {
+                // A person is known by a phone number or an address;
+                // either will do, since memberships key on the number
+                // first and Kanidm on the address.
+                if !has("name") || !(has("email") || has("phone")) {
                     anyhow::bail!(
-                        "question {:?} alternative {:?}: an invite must collect required `name` and `email` fields",
+                        "question {:?} alternative {:?}: an invite must collect a required `name` and a required `email` or `phone` field",
                         question.id, alternative.name
                     );
                 }