fix: show dash instead of provider node ID in model-sync logs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/api/providers/[id]/sync-models/route.ts

@@ -55,7 +55,7 @@ export async function POST(request: Request, { params }: { params: Promise<{ id:
         path: `/api/providers/${id}/models`,
         status: modelsRes.status,
         model: "model-sync",
-        provider: providerLabel,
+        provider: "-",
         connectionId: id,
         duration,
         error: modelsData.error || `HTTP ${modelsRes.status}`,
@@ -87,7 +87,7 @@ export async function POST(request: Request, { params }: { params: Promise<{ id:
       path: `/api/providers/${id}/models`,
       status: 200,
       model: "model-sync",
-      provider: providerLabel,
+      provider: "-",
       connectionId: id,
       duration: Date.now() - start,
       requestType: "model-sync",