feat: login page says a locked instance is suspended instead of drawing the form

web/lib/api.ts

@@ -443,6 +443,8 @@ export interface MeResponse {
 export interface BootstrapStatus {
     needs_setup: boolean;
     instance_name?: string;
+    /** Vantage HQ has locked this instance; the login page shows a message instead of the form. */
+    locked?: boolean;
 }
 
 export interface BootstrapResponse {
@@ -479,6 +481,7 @@ export interface PublicProvider {
 export interface ProvidersResponse {
     local_enabled: boolean;
     providers: PublicProvider[];
+    locked?: boolean;
 }
 
 export interface AuthProvider {