wire spec-driven auth: remove VITE_AUTH_BASE_URL, reorder providers

- main.jsx: remove VITE_AUTH_BASE_URL env var; add AppContent that
  reads authConfig from useAppContext() and passes to AuthProvider;
  reorder: AppProvider -> AuthProvider -> BrowserRouter
- sync react-openapi: AuthConfig type, extractAuthConfig, loading fix
- sync react-auth: authConfig prop, config-driven paths, server logout

react-openapi/src/context/AppContext.tsx

@@ -1,11 +1,12 @@
 import { createContext, useContext } from "react";
-import type { ProfileComponents, ProfileOperation, ResourceConfig, SpecConfiguration, ValidationMessage } from "../types";
+import type { AuthConfig, ProfileComponents, ProfileOperation, ResourceConfig, SpecConfiguration, ValidationMessage } from "../types";
 
 export interface AppContextValue {
   config: SpecConfiguration;
   resources: ResourceConfig[];
   profileOperations: ProfileOperation[];
   profileComponents: ProfileComponents;
+  authConfig: AuthConfig;
   schemas: Record<string, any>;
   loading: boolean;
   errors: ValidationMessage[];