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/rehype-stringify/index.d.ts

@@ -0,0 +1,27 @@
+import type {Root} from 'hast'
+import type {Plugin} from 'unified'
+import type {Options} from 'hast-util-to-html'
+
+export type {CharacterReferences, Options} from 'hast-util-to-html'
+
+/**
+ * Plugin to add support for serializing as HTML.
+ *
+ * @this
+ *   Unified processor.
+ * @param
+ *   Configuration (optional).
+ * @returns
+ *   Nothing.
+ */
+declare const rehypeStringify: Plugin<
+  [(Options | null | undefined)?],
+  Root,
+  string
+>
+export default rehypeStringify
+
+// Add custom settings supported when `rehype-stringify` is added.
+declare module 'unified' {
+  interface Settings extends Options {}
+}