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/unstorage/drivers/lru-cache.mjs

@@ -0,0 +1,57 @@
+import { defineDriver } from "./utils/index.mjs";
+import { LRUCache } from "lru-cache";
+const DRIVER_NAME = "lru-cache";
+export default defineDriver((opts = {}) => {
+  const cache = new LRUCache({
+    max: 1e3,
+    sizeCalculation: opts.maxSize || opts.maxEntrySize ? (value, key) => {
+      return key.length + byteLength(value);
+    } : void 0,
+    ...opts
+  });
+  return {
+    name: DRIVER_NAME,
+    options: opts,
+    getInstance: () => cache,
+    hasItem(key) {
+      return cache.has(key);
+    },
+    getItem(key) {
+      return cache.get(key) ?? null;
+    },
+    getItemRaw(key) {
+      return cache.get(key) ?? null;
+    },
+    setItem(key, value) {
+      cache.set(key, value);
+    },
+    setItemRaw(key, value) {
+      cache.set(key, value);
+    },
+    removeItem(key) {
+      cache.delete(key);
+    },
+    getKeys() {
+      return [...cache.keys()];
+    },
+    clear() {
+      cache.clear();
+    },
+    dispose() {
+      cache.clear();
+    }
+  };
+});
+function byteLength(value) {
+  if (typeof Buffer !== "undefined") {
+    try {
+      return Buffer.byteLength(value);
+    } catch {
+    }
+  }
+  try {
+    return typeof value === "string" ? value.length : JSON.stringify(value).length;
+  } catch {
+  }
+  return 0;
+}