Split frontend UI into feature modules

wwwroot/js/ui-runtime.js

@@ -0,0 +1,14 @@
+const runtime = {
+    refreshPhaseData: async () => {},
+    loadSuggestData: async () => {},
+    loadVoteData: async () => {},
+    handleAuthError: () => false,
+};
+
+export function configureUiRuntime(deps) {
+    Object.assign(runtime, deps ?? {});
+}
+
+export function getUiRuntime() {
+    return runtime;
+}