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/rehype-images.js

@@ -0,0 +1,49 @@
+import { visit } from "unist-util-visit";
+const HAST_PRESERVED_PROPERTIES = [
+  // HAST: className -> HTML: class
+  "className",
+  // HAST: htmlFor -> HTML: for
+  "htmlFor"
+];
+function rehypeImages() {
+  return function(tree, file) {
+    if (!file.data.astro?.localImagePaths?.length && !file.data.astro?.remoteImagePaths?.length) {
+      return;
+    }
+    const imageOccurrenceMap = /* @__PURE__ */ new Map();
+    visit(tree, "element", (node) => {
+      if (node.tagName !== "img") return;
+      if (typeof node.properties?.src !== "string") return;
+      const src = decodeURI(node.properties.src);
+      let imageProperties;
+      if (file.data.astro?.localImagePaths?.includes(src)) {
+        imageProperties = { ...node.properties, src };
+      } else if (file.data.astro?.remoteImagePaths?.includes(src)) {
+        imageProperties = {
+          // By default, markdown images won't have width and height set. However, just in case another user plugin does set these, we should respect them.
+          inferSize: "width" in node.properties && "height" in node.properties ? void 0 : true,
+          ...node.properties,
+          src
+        };
+      } else {
+        return;
+      }
+      const hastProperties = {};
+      for (const key of HAST_PRESERVED_PROPERTIES) {
+        if (key in imageProperties) {
+          hastProperties[key] = imageProperties[key];
+          delete imageProperties[key];
+        }
+      }
+      const index = imageOccurrenceMap.get(node.properties.src) || 0;
+      imageOccurrenceMap.set(node.properties.src, index + 1);
+      node.properties = {
+        ...hastProperties,
+        __ASTRO_IMAGE_: JSON.stringify({ ...imageProperties, index })
+      };
+    });
+  };
+}
+export {
+  rehypeImages
+};