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/astro/dist/vite-plugin-astro-server/response.d.ts

@@ -0,0 +1,7 @@
+import type http from 'node:http';
+import type { ErrorWithMetadata } from '../core/errors/index.js';
+import type { ModuleLoader } from '../core/module-loader/index.js';
+export declare function handle500Response(loader: ModuleLoader, res: http.ServerResponse, err: ErrorWithMetadata): Promise<void>;
+export declare function writeHtmlResponse(res: http.ServerResponse, statusCode: number, html: string): void;
+export declare function writeRedirectResponse(res: http.ServerResponse, statusCode: number, location: string): void;
+export declare function writeSSRResult(webRequest: Request, webResponse: Response, res: http.ServerResponse): Promise<void>;