Frontend uudelleenrakennettu: Astro-komponentit, Wasm pääsäikeessä, ei Workeria

Vanha frontend siirretty temp/. Uusi rakenne:
- StatusBar.astro, Terminal.astro, Editor.astro, Guide.astro
- global.css erillinen
- Wasm pääsäikeessä (ei Worker — yksinkertainen, debugattava)
- Tab-completion, dropdown, projektikortti, Monaco, GUIDE.md
- Ei tokenisointia eikä koodilaboratoriota

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

network-poc/frontend/node_modules/@astrojs/internal-helpers/dist/fs.d.ts

@@ -0,0 +1,15 @@
+import type { PathLike } from 'node:fs';
+export declare function writeJson<T>(path: PathLike, data: T): Promise<void>;
+export declare function removeDir(dir: PathLike): Promise<void>;
+export declare function emptyDir(dir: PathLike): Promise<void>;
+export declare function getFilesFromFolder(dir: URL): Promise<URL[]>;
+/**
+ * Copies files into a folder keeping the folder structure intact.
+ * The resulting file tree will start at the common ancestor.
+ *
+ * @param {URL[]} files A list of files to copy (absolute path).
+ * @param {URL} outDir Destination folder where to copy the files to (absolute path).
+ * @param {URL[]} [exclude] A list of files to exclude (absolute path).
+ * @returns {Promise<string>} The common ancestor of the copied files.
+ */
+export declare function copyFilesToFolder(files: URL[], outDir: URL, exclude?: URL[]): Promise<string>;