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/mdast-util-to-string/lib/index.d.ts

@@ -0,0 +1,31 @@
+/**
+ * Get the text content of a node or list of nodes.
+ *
+ * Prefers the node’s plain-text fields, otherwise serializes its children,
+ * and if the given value is an array, serialize the nodes in it.
+ *
+ * @param {unknown} [value]
+ *   Thing to serialize, typically `Node`.
+ * @param {Options | null | undefined} [options]
+ *   Configuration (optional).
+ * @returns {string}
+ *   Serialized `value`.
+ */
+export function toString(
+  value?: unknown,
+  options?: Options | null | undefined
+): string
+export type Nodes = import('mdast').Nodes
+/**
+ * Configuration (optional).
+ */
+export type Options = {
+  /**
+   * Whether to use `alt` for `image`s (default: `true`).
+   */
+  includeImageAlt?: boolean | null | undefined
+  /**
+   * Whether to use `value` of HTML (default: `true`).
+   */
+  includeHtml?: boolean | null | undefined
+}