feat(submodules and login redirect): submodules added and login redirect

frontend/src/routes/_admin.tsx

@@ -1,4 +1,4 @@
-import {createFileRoute, redirect} from "@tanstack/react-router";
+import { createFileRoute, redirect } from "@tanstack/react-router";
 
 // src/routes/_authenticated.tsx
 export const Route = createFileRoute("/_admin")({
@@ -7,6 +7,12 @@ export const Route = createFileRoute("/_admin")({
         if (!auth) {
             throw redirect({
                 to: "/login",
+                search: {
+                    // Use the current location to power a redirect after login
+                    // (Do not use `router.state.resolvedLocation` as it can
+                    // potentially lag behind the actual current location)
+                    redirect: location.pathname + location.search,
+                },
             });
         }
     },