fix: support files proxy root paths

cmd/server/main.go

@@ -66,8 +66,7 @@ func main() {
 	r.Get("/healthz", healthH.Healthz)
 	r.Get("/readyz", healthH.Readyz)
 
-	r.Route("/api", func(r chi.Router) {
-		r.Use(commonmw.InternalAuth(cfg.InternalAPIKey))
+	mountFilesAPI := func(r chi.Router) {
 		r.Get("/nodes", nodeH.List)
 		r.Post("/folders", nodeH.CreateFolder)
 		r.Post("/files", nodeH.UploadFile)
@@ -80,6 +79,15 @@ func main() {
 			r.Put("/access", nodeH.ReplaceAccess)
 			r.Post("/public-links", nodeH.CreatePublicLink)
 		})
+	}
+
+	r.Route("/api", func(r chi.Router) {
+		r.Use(commonmw.InternalAuth(cfg.InternalAPIKey))
+		mountFilesAPI(r)
+	})
+	r.Group(func(r chi.Router) {
+		r.Use(commonmw.InternalAuth(cfg.InternalAPIKey))
+		mountFilesAPI(r)
 	})
 
 	r.Get("/public/{token}", nodeH.PublicMeta)