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/markdown-remark/dist/remark-collect-images.js

@@ -0,0 +1,38 @@
+import { isRemoteAllowed } from "@astrojs/internal-helpers/remote";
+import { definitions } from "mdast-util-definitions";
+import { visit } from "unist-util-visit";
+function remarkCollectImages(opts) {
+  const domains = opts?.domains ?? [];
+  const remotePatterns = opts?.remotePatterns ?? [];
+  return function(tree, vfile) {
+    if (typeof vfile?.path !== "string") return;
+    const definition = definitions(tree);
+    const localImagePaths = /* @__PURE__ */ new Set();
+    const remoteImagePaths = /* @__PURE__ */ new Set();
+    visit(tree, (node) => {
+      let url;
+      if (node.type === "image") {
+        url = decodeURI(node.url);
+      } else if (node.type === "imageReference") {
+        const imageDefinition = definition(node.identifier);
+        if (imageDefinition) {
+          url = decodeURI(imageDefinition.url);
+        }
+      }
+      if (!url) return;
+      if (URL.canParse(url)) {
+        if (isRemoteAllowed(url, { domains, remotePatterns })) {
+          remoteImagePaths.add(url);
+        }
+      } else if (!url.startsWith("/")) {
+        localImagePaths.add(url);
+      }
+    });
+    vfile.data.astro ??= {};
+    vfile.data.astro.localImagePaths = Array.from(localImagePaths);
+    vfile.data.astro.remoteImagePaths = Array.from(remoteImagePaths);
+  };
+}
+export {
+  remarkCollectImages
+};