Canary of a model's newer weights: ctl model canary, promote and canaries, rolled back by itself when it serves worse

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/cli/server.go

@@ -405,7 +405,10 @@ func newServerCmd() *cobra.Command {
 						Current: func() []catalog.Model { return admin.Catalog().Models() },
 						Models:  catalogSvc, Restart: admin.Reconciler().Restart,
 						Pool: adminAPI.PoolNodes, Notify: notifier,
+						// Canaries: how the router saw each side serve.
+						CanaryStats: rt.CanaryStats, ResetCanary: rt.ResetCanary,
 					})
+					go serve.WatchCanaries(ctx, 30*time.Second)
 					adminAPI.SetServe(serve)
 					updateMetrics.Set(serve)
 					go serve.WatchUpdates(ctx, cfg.Mirror.UpdateCheck)