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/prismjs/plugins/download-button/prism-download-button.js

@@ -0,0 +1,20 @@
+(function () {
+
+	if (typeof Prism === 'undefined' || typeof document === 'undefined' || !document.querySelector) {
+		return;
+	}
+
+	Prism.plugins.toolbar.registerButton('download-file', function (env) {
+		var pre = env.element.parentNode;
+		if (!pre || !/pre/i.test(pre.nodeName) || !pre.hasAttribute('data-src') || !pre.hasAttribute('data-download-link')) {
+			return;
+		}
+		var src = pre.getAttribute('data-src');
+		var a = document.createElement('a');
+		a.textContent = pre.getAttribute('data-download-link-label') || 'Download';
+		a.setAttribute('download', '');
+		a.href = src;
+		return a;
+	});
+
+}());

network-poc/frontend/node_modules/prismjs/plugins/download-button/prism-download-button.min.js

@@ -0,0 +1 @@
+"undefined"!=typeof Prism&&"undefined"!=typeof document&&document.querySelector&&Prism.plugins.toolbar.registerButton("download-file",(function(t){var e=t.element.parentNode;if(e&&/pre/i.test(e.nodeName)&&e.hasAttribute("data-src")&&e.hasAttribute("data-download-link")){var n=e.getAttribute("data-src"),a=document.createElement("a");return a.textContent=e.getAttribute("data-download-link-label")||"Download",a.setAttribute("download",""),a.href=n,a}}));