Wire the enforce guard into the daemon and assert it on the wire

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

cmd/antidriftd/main.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"antidrift/internal/ai"
+	"antidrift/internal/enforce"
 	"antidrift/internal/evidence"
 	"antidrift/internal/knowledge"
 	"antidrift/internal/session"
@@ -72,6 +73,9 @@ func main() {
 		log.Printf("status: writing %s", statusPath)
 	}
 
+	ctrl.SetGuard(enforce.NewGuard())
+	log.Printf("enforce: window-minimize guard")
+
 	src := evidence.NewSource()
 	go src.Watch(context.Background(), ctrl.RecordWindow)