키 관리 로직을 Keyring으로 통합하여 하드코딩된 MEK 및 HSK 버전을 제거하고 Svelte Store를 Rune으로 대체

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/routes/(fullscreen)/settings/thumbnail/+page.svelte

@@ -5,7 +5,6 @@
   import { IconEntryButton, TopBar } from "#lib/components/molecules/index.js";
   import { deleteAllFileThumbnailCaches } from "#lib/client/cache/index.js";
   import type { MaybeFileInfo } from "#lib/modules/filesystem/index.js";
-  import { masterKeyStore } from "#lib/stores/index.js";
   import { sortEntries } from "#lib/utils/index.js";
   import File from "./File.svelte";
   import {
@@ -42,9 +41,7 @@
   };
 
   onMount(async () => {
-    fileInfos = sortEntries(
-      await requestMissingThumbnailFiles(data.files, $masterKeyStore?.get(1)?.key!),
-    );
+    fileInfos = sortEntries(await requestMissingThumbnailFiles(data.files));
   });
 
   $effect(() => clearThumbnailGenerationStatuses);