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/astro/dist/vite-plugin-astro-server/trailing-slash.js

@@ -0,0 +1,47 @@
+import {
+  collapseDuplicateTrailingSlashes,
+  hasFileExtension,
+  isInternalPath
+} from "@astrojs/internal-helpers/path";
+import { trailingSlashMismatchTemplate } from "../template/4xx.js";
+import { writeHtmlResponse, writeRedirectResponse } from "./response.js";
+function evaluateTrailingSlash(pathname, search, trailingSlash) {
+  if (isInternalPath(pathname)) {
+    return { action: "next" };
+  }
+  const collapsed = collapseDuplicateTrailingSlashes(pathname, true);
+  if (pathname && collapsed !== pathname) {
+    return { action: "redirect", status: 301, location: `${collapsed}${search}` };
+  }
+  if (trailingSlash === "never" && pathname.endsWith("/") && pathname !== "/" || trailingSlash === "always" && !pathname.endsWith("/") && !hasFileExtension(pathname)) {
+    return { action: "reject", status: 404, pathname };
+  }
+  return { action: "next" };
+}
+function trailingSlashMiddleware(settings) {
+  const { trailingSlash } = settings.config;
+  return function devTrailingSlash(req, res, next) {
+    const url = new URL(`http://localhost${req.url}`);
+    let pathname;
+    try {
+      pathname = decodeURI(url.pathname);
+    } catch (e) {
+      return next(e);
+    }
+    const decision = evaluateTrailingSlash(pathname, url.search, trailingSlash);
+    switch (decision.action) {
+      case "redirect":
+        return writeRedirectResponse(res, decision.status, decision.location);
+      case "reject": {
+        const html = trailingSlashMismatchTemplate(decision.pathname, trailingSlash);
+        return writeHtmlResponse(res, decision.status, html);
+      }
+      case "next":
+        return next();
+    }
+  };
+}
+export {
+  evaluateTrailingSlash,
+  trailingSlashMiddleware
+};