Add authenticated login and SSO protection

app/api/health/route.ts

@@ -1,4 +1,5 @@
 import { jsonOk } from "@/lib/server/api";
+import { authConfigSummary, getAuthRuntimeConfig } from "@/lib/auth/config";
 import { getEffectiveImageEngine, getEvolinkImageSettings, shouldMockEvolinkApi } from "@/lib/evolink/image-client";
 import { getVisibleImageCapabilities } from "@/lib/jimeng/capabilities";
 import { shouldMockVisualApi } from "@/lib/volcengine/visual-client";
@@ -8,6 +9,7 @@ export const runtime = "nodejs";
 
 export async function GET() {
   const evolink = getEvolinkImageSettings();
+  const auth = getAuthRuntimeConfig();
   return jsonOk({
     ok: true,
     appId: "zhinian-web-studio",
@@ -15,6 +17,7 @@ export async function GET() {
     visualApiMode: shouldMockVisualApi() ? "mock" : "volcengine",
     evolinkMode: shouldMockEvolinkApi() ? "mock" : "evolink",
     seedanceMode: shouldMockSeedance() ? "mock" : "seedance",
+    authMode: authConfigSummary(auth),
     capabilities: [
       ...getVisibleImageCapabilities().map((capability) => {
         const engine = getEffectiveImageEngine(capability.id);