feat: cache revalidation

internal/server/routes.go

@@ -51,7 +51,7 @@ func registerOther() (h http.Handler) {
 	if err != nil {
 		slog.Error("failed to create valkey client", "err", err)
 	} else {
-		fs = filesystem.NewCachedClient(webdavClient, valkeyClient, 5*time.Minute)
+		fs = filesystem.NewCachedClient(webdavClient, valkeyClient, 5*time.Hour)
 	}
 
 	_ = handlehome.New(mux, page.New(fs))