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/frontmatter.js

@@ -0,0 +1,58 @@
+import yaml from "js-yaml";
+import * as toml from "smol-toml";
+function isFrontmatterValid(frontmatter) {
+  try {
+    JSON.stringify(frontmatter);
+  } catch {
+    return false;
+  }
+  return typeof frontmatter === "object" && frontmatter !== null;
+}
+const frontmatterRE = /(?:^\uFEFF?|^\s*\n)(?:---|\+\+\+)([\s\S]*?\n)(?:---|\+\+\+)/;
+const frontmatterTypeRE = /(?:^\uFEFF?|^\s*\n)(---|\+\+\+)/;
+function extractFrontmatter(code) {
+  return frontmatterRE.exec(code)?.[1];
+}
+function getFrontmatterParser(code) {
+  return frontmatterTypeRE.exec(code)?.[1] === "+++" ? ["+++", toml.parse] : ["---", yaml.load];
+}
+function parseFrontmatter(code, options) {
+  const rawFrontmatter = extractFrontmatter(code);
+  if (rawFrontmatter == null) {
+    return { frontmatter: {}, rawFrontmatter: "", content: code };
+  }
+  const [delims, parser] = getFrontmatterParser(code);
+  const parsed = parser(rawFrontmatter);
+  const frontmatter = parsed && typeof parsed === "object" ? parsed : {};
+  let content;
+  switch (options?.frontmatter ?? "remove") {
+    case "preserve":
+      content = code;
+      break;
+    case "remove":
+      content = code.replace(`${delims}${rawFrontmatter}${delims}`, "");
+      break;
+    case "empty-with-spaces":
+      content = code.replace(
+        `${delims}${rawFrontmatter}${delims}`,
+        `   ${rawFrontmatter.replace(/[^\r\n]/g, " ")}   `
+      );
+      break;
+    case "empty-with-lines":
+      content = code.replace(
+        `${delims}${rawFrontmatter}${delims}`,
+        rawFrontmatter.replace(/[^\r\n]/g, "")
+      );
+      break;
+  }
+  return {
+    frontmatter,
+    rawFrontmatter,
+    content
+  };
+}
+export {
+  extractFrontmatter,
+  isFrontmatterValid,
+  parseFrontmatter
+};