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/csso/lib/clean/index.js

@@ -0,0 +1,28 @@
+import { walk } from 'css-tree';
+import Atrule from './Atrule.js';
+import Comment from './Comment.js';
+import Declaration from './Declaration.js';
+import Raw from './Raw.js';
+import Rule from './Rule.js';
+import TypeSelector from './TypeSelector.js';
+import WhiteSpace from './WhiteSpace.js';
+
+const handlers = {
+    Atrule,
+    Comment,
+    Declaration,
+    Raw,
+    Rule,
+    TypeSelector,
+    WhiteSpace
+};
+
+export default function(ast, options) {
+    walk(ast, {
+        leave(node, item, list) {
+            if (handlers.hasOwnProperty(node.type)) {
+                handlers[node.type].call(this, node, item, list, options);
+            }
+        }
+    });
+};