diff --git a/web/.idea/web.iml b/web/.idea/web.iml
index c956989..25dca50 100644
--- a/web/.idea/web.iml
+++ b/web/.idea/web.iml
@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module type="WEB_MODULE" version="4">
   <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$" />
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.svelte-kit" />
+    </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
diff --git a/web/src/routes/+layout.svelte b/web/src/routes/+layout.svelte
index 82fc44b..0b927c9 100644
--- a/web/src/routes/+layout.svelte
+++ b/web/src/routes/+layout.svelte
@@ -11,7 +11,7 @@
 {@render children()}
 
 <div style="display:none">
-	{#each locales as locale}
-		<a href={localizeHref(page.url.pathname, { locale })}>{locale}</a>
+	{#each locales as locale (locale)}
+		<a href={resolve(localizeHref(page.url.pathname, { locale }))}>{locale}</a>
 	{/each}
 </div>
diff --git a/web/src/routes/+page.server.js b/web/src/routes/+page.server.js
index ceacf4f..a52a866 100644
--- a/web/src/routes/+page.server.js
+++ b/web/src/routes/+page.server.js
@@ -4,7 +4,7 @@ export async function load({ fetch }) {
 	try {
 		const albums = await fetchApi('/album', fetch);
 		return { albums: albums ?? [] };
-	} catch (error) {
+	} catch {
 		return { albums: [] };
 	}
 }
diff --git a/web/src/routes/+page.svelte b/web/src/routes/+page.svelte
index 33151b3..a9d3c4c 100644
--- a/web/src/routes/+page.svelte
+++ b/web/src/routes/+page.svelte
@@ -1,5 +1,5 @@
 <script>
-	import { albums, loading, no_albums } from '$lib/paraglide/messages';
+	import { albums, no_albums } from '$lib/paraglide/messages';
 	import { resolve } from '$app/paths';
 
 	let { data } = $props();
diff --git a/web/src/routes/album/[id]/+page.server.js b/web/src/routes/album/[id]/+page.server.js
index 3966a5d..5e41afd 100644
--- a/web/src/routes/album/[id]/+page.server.js
+++ b/web/src/routes/album/[id]/+page.server.js
@@ -34,7 +34,7 @@ export async function load({ params, fetch, url }) {
 			hasMore,
 			totalPhotos
 		};
-	} catch (error) {
+	} catch {
 		return {
 			album: null,
 			photos: [],
diff --git a/web/src/routes/album/[id]/+page.svelte b/web/src/routes/album/[id]/+page.svelte
index efe5371..55ae491 100644
--- a/web/src/routes/album/[id]/+page.svelte
+++ b/web/src/routes/album/[id]/+page.svelte
@@ -2,7 +2,7 @@
 	import { page } from '$app/state';
 	import { albums, back, photo_count, loading } from '$lib/paraglide/messages';
 	import { resolve } from '$app/paths';
-	import { getPhotoPreviewUrl } from '$lib/api/client';
+	import { SvelteSet } from 'svelte/reactivity';
 
 	let { data } = $props();
 
@@ -31,7 +31,7 @@
 	let isLoading = $state(false);
 
 	// 已升级质量的图片 ID 集合，避免重复升级
-	let upgradedPhotoIds = $state(new Set());
+	let upgradedPhotoIds = new SvelteSet();
 
 	// 监听数据变化，重置状态
 	$effect(() => {
@@ -40,7 +40,7 @@
 			displayedCount = BATCH_SIZE;
 			currentPage = 1;
 			isLoading = false;
-			upgradedPhotoIds = new Set();
+			upgradedPhotoIds = new SvelteSet();
 		}
 	});
 
diff --git a/web/src/routes/photo/[id]/+page.server.js b/web/src/routes/photo/[id]/+page.server.js
index 4455557..a54de60 100644
--- a/web/src/routes/photo/[id]/+page.server.js
+++ b/web/src/routes/photo/[id]/+page.server.js
@@ -41,7 +41,7 @@ export async function load({ params, fetch }) {
 						nextPhotoId = index < photos.length - 1 ? photos[index + 1].id : null;
 					}
 				}
-			} catch (e) {
+			} catch {
 				// 静默失败，使用默认值
 			}
 		}
diff --git a/web/src/routes/photo/[id]/+page.svelte b/web/src/routes/photo/[id]/+page.svelte
index c78432f..d89dddc 100644
--- a/web/src/routes/photo/[id]/+page.svelte
+++ b/web/src/routes/photo/[id]/+page.svelte
@@ -1,7 +1,7 @@
 <script>
 	import { m } from '$lib/paraglide/messages';
 	import { resolve } from '$app/paths';
-	import { getPhotoPreviewUrl, getPhotoFileUrl } from '$lib/api/client';
+	import { getPhotoFileUrl } from '$lib/api/client';
 	import { goto } from '$app/navigation';
 
 	let { data } = $props();
@@ -1292,17 +1292,6 @@
 			right: 0.5rem;
 		}
 
-		.quality-upgrade-btn,
-		.network-tip.slow {
-			bottom: 140px;
-			padding: 0.5rem 0.875rem;
-			font-size: 0.8rem;
-		}
-
-		.network-tip.slow button {
-			font-size: 0.75rem;
-		}
-
 		.shortcut-hints {
 			display: none;
 		}