Update dependencies and remove unused FlakeNix component

src/app/flake.nix/page.tsx

@@ -1,128 +0,0 @@
-"use client";
-
-import { useEffect, useRef, useCallback } from "react";
-import hljs from "highlight.js/lib/core";
-import nix from "highlight.js/lib/languages/nix";
-import "highlight.js/styles/github-dark.css";
-
-hljs.registerLanguage("nix", nix);
-
-declare global {
-    interface Window {
-        showSaveFilePicker?: (options?: {
-            suggestedName?: string;
-            types?: Array<{
-                description?: string;
-                accept: Record<string, string[]>;
-            }>;
-        }) => Promise<FileSystemFileHandle>;
-    }
-}
-
-const code = `{
-    description = "My personal website";
-    
-    inputs = {
-        nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
-    }
-
-    outputs = { self, nixpkgs }: {
-        let
-            system = "x86_64-linux";
-            pkgs = import nixpkgs { inherit system; };
-        in {
-            // install pakages
-            nix.settings = {
-                sandbox = false;
-                experimental-features = [ "flakes" ];
-            };
-            time.timeZone = "Asia/Seoul";
-        }
-}`;
-
-const customTheme = `
-.hljs {
-  background: #191017 !important;
-  color: #fcf8f9 !important;
-}
-.hljs-attr { color: #f38ba8; }
-.hljs-string { color: #a6e3a1; }
-.hljs-number { color: #f9e2af; }
-.hljs-literal { color: #89b4fa; }
-.hljs-type { color: #f5c2e7; }
-.hljs-title { color: #94e2d5; }
-`;
-
-export default function FlakeNix() {
-    const codeRef = useRef<HTMLElement>(null);
-
-    const downloadFile = useCallback(async () => {
-        if (window.showSaveFilePicker) {
-            try {
-                const handle = await window.showSaveFilePicker({
-                    suggestedName: "flake.nix",
-                    types: [
-                        {
-                            description: "Nix Files",
-                            accept: { "text/plain": [".nix"] },
-                        },
-                    ],
-                });
-                const writable = await handle.createWritable();
-                await writable.write(code);
-                await writable.close();
-            } catch (e) {
-                // 사용자가 취소한 경우
-                if ((e as Error).name !== "AbortError") {
-                    console.error(e);
-                }
-            }
-        } else {
-            // fallback: showSaveFilePicker를 지원하지 않는 브라우저
-            const blob = new Blob([code], { type: "text/plain" });
-            const url = URL.createObjectURL(blob);
-            const a = document.createElement("a");
-            a.href = url;
-            a.download = "flake.nix";
-            document.body.appendChild(a);
-            a.click();
-            document.body.removeChild(a);
-            URL.revokeObjectURL(url);
-        }
-    }, []);
-
-    useEffect(() => {
-        const style = document.createElement("style");
-        style.textContent = customTheme;
-        document.head.appendChild(style);
-
-        if (codeRef.current) {
-            hljs.highlightElement(codeRef.current);
-        }
-
-        const handleKeyDown = (e: KeyboardEvent) => {
-            if ((e.ctrlKey || e.metaKey) && e.key === "s") {
-                e.preventDefault();
-                downloadFile();
-            }
-        };
-
-        window.addEventListener("keydown", handleKeyDown);
-
-        return () => {
-            window.removeEventListener("keydown", handleKeyDown);
-        };
-    }, [downloadFile]);
-
-    return (
-        <main className="flex h-screen items-center justify-center">
-            <div className="max-w-3xl w-full mx-auto px-6 rounded-2xl overflow-auto">
-                <pre>
-                    <code ref={codeRef} className="language-nix">
-                        {code}
-                    </code>
-                </pre>
-            </div>
-        </main>
-    );
-}