refactor: standardize loading indicators by using Spinner for route fallbacks and specializing Skeleton for memo lists

web/src/components/AuthFooter.tsx

@@ -1,7 +1,7 @@
 import { useTranslation } from "react-i18next";
 import { cn } from "@/lib/utils";
-import { getInitialTheme, loadTheme } from "@/utils/theme";
 import { loadLocale } from "@/utils/i18n";
+import { getInitialTheme, loadTheme } from "@/utils/theme";
 import LocaleSelect from "./LocaleSelect";
 import ThemeSelect from "./ThemeSelect";
 

web/src/components/PagedMemoList/PagedMemoList.tsx

@@ -149,7 +149,7 @@ const PagedMemoList = (props: Props) => {
     <div className="flex flex-col justify-start items-start w-full max-w-full">
       {/* Show skeleton loader during initial load */}
       {isLoading ? (
-        <Skeleton type="memo" showCreator={props.showCreator} count={4} />
+        <Skeleton showCreator={props.showCreator} count={4} />
       ) : (
         <>
           <MasonryView
@@ -166,8 +166,8 @@ const PagedMemoList = (props: Props) => {
             listMode={layout === "LIST"}
           />
 
-          {/* Loading indicator for pagination - use skeleton for content consistency */}
-          {isFetchingNextPage && <Skeleton type="pagination" showCreator={props.showCreator} count={2} />}
+          {/* Loading indicator for pagination */}
+          {isFetchingNextPage && <Skeleton showCreator={props.showCreator} count={2} />}
 
           {/* Empty state or back-to-top button */}
           {!isFetchingNextPage && (

web/src/components/Skeleton.tsx

@@ -1,13 +1,11 @@
 import { cn } from "@/lib/utils";
 
 interface Props {
-  type?: "route" | "memo" | "pagination";
   showCreator?: boolean;
   count?: number;
-  showEditor?: boolean;
 }
 
-// Memo card skeleton component
+// Memo card skeleton component for list loading states
 const MemoCardSkeleton = ({ showCreator = false, index = 0 }: { showCreator?: boolean; index?: number }) => (
   <div className="relative flex flex-col justify-start items-start bg-card w-full px-4 py-3 mb-2 gap-2 rounded-lg border border-border animate-pulse">
     {/* Header section */}
@@ -43,36 +41,17 @@ const MemoCardSkeleton = ({ showCreator = false, index = 0 }: { showCreator?: bo
   </div>
 );
 
-const Skeleton = ({ type = "route", showCreator = false, count = 4, showEditor = true }: Props) => {
-  // Pagination type: simpler, just memos
-  if (type === "pagination") {
-    return (
-      <div className="w-full flex flex-col justify-center items-center my-4">
-        <div className="w-full max-w-2xl mx-auto">
-          {Array.from({ length: count }).map((_, index) => (
-            <MemoCardSkeleton key={index} showCreator={showCreator} index={index} />
-          ))}
-        </div>
-      </div>
-    );
-  }
-
-  // Route or memo type: with optional wrapper
-  return (
-    <div className="w-full max-w-2xl mx-auto">
-      {/* Editor skeleton - only for route type */}
-      {type === "route" && showEditor && (
-        <div className="relative flex flex-col justify-start items-start bg-card w-full px-4 py-3 mb-4 gap-2 rounded-lg border border-border animate-pulse">
-          <div className="w-full h-12 bg-muted rounded" />
-        </div>
-      )}
-
-      {/* Memo skeletons */}
-      {Array.from({ length: count }).map((_, index) => (
-        <MemoCardSkeleton key={index} showCreator={showCreator} index={index} />
-      ))}
-    </div>
-  );
-};
+/**
+ * Skeleton loading state for memo lists.
+ * Use this for initial memo list loading and pagination.
+ * For generic page/route loading, use Spinner instead.
+ */
+const Skeleton = ({ showCreator = false, count = 4 }: Props) => (
+  <div className="w-full max-w-2xl mx-auto">
+    {Array.from({ length: count }).map((_, index) => (
+      <MemoCardSkeleton key={index} showCreator={showCreator} index={index} />
+    ))}
+  </div>
+);
 
 export default Skeleton;

web/src/layouts/RootLayout.tsx

@@ -2,7 +2,7 @@ import { Suspense, useEffect, useMemo } from "react";
 import { Outlet, useLocation, useSearchParams } from "react-router-dom";
 import usePrevious from "react-use/lib/usePrevious";
 import Navigation from "@/components/Navigation";
-import Skeleton from "@/components/Skeleton";
+import Spinner from "@/components/Spinner";
 import { useInstance } from "@/contexts/InstanceContext";
 import { useMemoFilterContext } from "@/contexts/MemoFilterContext";
 import useCurrentUser from "@/hooks/useCurrentUser";
@@ -47,7 +47,13 @@ const RootLayout = () => {
         </div>
       )}
       <main className="w-full h-auto grow shrink flex flex-col justify-start items-center">
-        <Suspense fallback={<Skeleton type="route" />}>
+        <Suspense
+          fallback={
+            <div className="w-full h-64 flex items-center justify-center">
+              <Spinner size="lg" />
+            </div>
+          }
+        >
           <Outlet />
         </Suspense>
       </main>

web/src/main.tsx

@@ -8,6 +8,7 @@ import { RouterProvider } from "react-router-dom";
 import "./i18n";
 import "./index.css";
 import { ErrorBoundary } from "@/components/ErrorBoundary";
+import Spinner from "@/components/Spinner";
 import { AuthProvider, useAuth } from "@/contexts/AuthContext";
 import { InstanceProvider, useInstance } from "@/contexts/InstanceContext";
 import { ViewProvider } from "@/contexts/ViewContext";
@@ -39,7 +40,11 @@ function AppInitializer({ children }: { children: React.ReactNode }) {
   }, [initAuth, initInstance]);
 
   if (!authInitialized || !instanceInitialized) {
-    return undefined;
+    return (
+      <div className="w-full h-screen flex items-center justify-center">
+        <Spinner size="lg" />
+      </div>
+    );
   }
 
   return <>{children}</>;

web/src/router/index.tsx

@@ -1,7 +1,8 @@
+import type { ComponentType } from "react";
 import { lazy, Suspense } from "react";
 import { createBrowserRouter } from "react-router-dom";
 import App from "@/App";
-import Skeleton from "@/components/Skeleton";
+import Spinner from "@/components/Spinner";
 import MainLayout from "@/layouts/MainLayout";
 import RootLayout from "@/layouts/RootLayout";
 import Home from "@/pages/Home";
@@ -27,6 +28,19 @@ import { ROUTES } from "./routes";
 export const Routes = ROUTES;
 export { ROUTES };
 
+// Helper component to reduce Suspense boilerplate for lazy routes
+const LazyRoute = ({ component: Component }: { component: ComponentType }) => (
+  <Suspense
+    fallback={
+      <div className="w-full h-64 flex items-center justify-center">
+        <Spinner size="lg" />
+      </div>
+    }
+  >
+    <Component />
+  </Suspense>
+);
+
 const router = createBrowserRouter([
   {
     path: "/",
@@ -35,38 +49,10 @@ const router = createBrowserRouter([
       {
         path: Routes.AUTH,
         children: [
-          {
-            path: "",
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <SignIn />
-              </Suspense>
-            ),
-          },
-          {
-            path: "admin",
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <AdminSignIn />
-              </Suspense>
-            ),
-          },
-          {
-            path: "signup",
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <SignUp />
-              </Suspense>
-            ),
-          },
-          {
-            path: "callback",
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <AuthCallback />
-              </Suspense>
-            ),
-          },
+          { path: "", element: <LazyRoute component={SignIn} /> },
+          { path: "admin", element: <LazyRoute component={AdminSignIn} /> },
+          { path: "signup", element: <LazyRoute component={SignUp} /> },
+          { path: "callback", element: <LazyRoute component={AuthCallback} /> },
         ],
       },
       {
@@ -76,101 +62,21 @@ const router = createBrowserRouter([
           {
             element: <MainLayout />,
             children: [
-              {
-                path: "",
-                element: <Home />,
-              },
-              {
-                path: Routes.EXPLORE,
-                element: (
-                  <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                    <Explore />
-                  </Suspense>
-                ),
-              },
-              {
-                path: Routes.ARCHIVED,
-                element: (
-                  <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                    <Archived />
-                  </Suspense>
-                ),
-              },
-              {
-                path: "u/:username",
-                element: (
-                  <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                    <UserProfile />
-                  </Suspense>
-                ),
-              },
+              { path: "", element: <Home /> },
+              { path: Routes.EXPLORE, element: <LazyRoute component={Explore} /> },
+              { path: Routes.ARCHIVED, element: <LazyRoute component={Archived} /> },
+              { path: "u/:username", element: <LazyRoute component={UserProfile} /> },
             ],
           },
-          {
-            path: Routes.ATTACHMENTS,
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <Attachments />
-              </Suspense>
-            ),
-          },
-          {
-            path: Routes.INBOX,
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <Inboxes />
-              </Suspense>
-            ),
-          },
-          {
-            path: Routes.SETTING,
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <Setting />
-              </Suspense>
-            ),
-          },
-          {
-            path: "memos/:uid",
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <MemoDetail />
-              </Suspense>
-            ),
-          },
-          // Redirect old path to new path.
-          {
-            path: "m/:uid",
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <MemoDetailRedirect />
-              </Suspense>
-            ),
-          },
-          {
-            path: "403",
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <PermissionDenied />
-              </Suspense>
-            ),
-          },
-          {
-            path: "404",
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <NotFound />
-              </Suspense>
-            ),
-          },
-          {
-            path: "*",
-            element: (
-              <Suspense fallback={<Skeleton type="route" showEditor={false} />}>
-                <NotFound />
-              </Suspense>
-            ),
-          },
+          { path: Routes.ATTACHMENTS, element: <LazyRoute component={Attachments} /> },
+          { path: Routes.INBOX, element: <LazyRoute component={Inboxes} /> },
+          { path: Routes.SETTING, element: <LazyRoute component={Setting} /> },
+          { path: "memos/:uid", element: <LazyRoute component={MemoDetail} /> },
+          // Redirect old path to new path
+          { path: "m/:uid", element: <LazyRoute component={MemoDetailRedirect} /> },
+          { path: "403", element: <LazyRoute component={PermissionDenied} /> },
+          { path: "404", element: <LazyRoute component={NotFound} /> },
+          { path: "*", element: <LazyRoute component={NotFound} /> },
         ],
       },
     ],