feat: shift+click to add on right

webui/src/components/display/UpLink.svelte

@@ -29,14 +29,13 @@
   const index = context ? context.index : readable(0);
   const addresses = context ? context.addresses : readable([]);
 
-  function onClick() {
+  function onClick(ev: MouseEvent) {
     if ($location.pathname.startsWith("/browse")) {
       let newAddresses = $addresses.concat();
 
       const routerTo =
         "/browse/" +
-        newAddresses
-          .slice(0, $index + 1)
+        (ev.shiftKey ? newAddresses : newAddresses.slice(0, $index + 1))
           .concat([targetHref])
           .join(",");