서버, 클라이언트, 서비스 워커 공용 코드를 lib/shared로 분리하고 브라우저 전용 모듈을 lib/client로 재구성

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

src/lib/modules/filesystem/file.ts

@@ -1,4 +1,4 @@
-import * as IndexedDB from "#lib/indexedDB/index.js";
+import * as IndexedDB from "#lib/client/storage/indexedDB/index.js";
 import { trpc, isTRPCClientError } from "#trpc/client.js";
 import { FilesystemCache, decryptFileMetadata, decryptCategoryMetadata } from "./internal.svelte";
 import type { FileInfo, MaybeFileInfo } from "./types";