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/css-tree/lib/index.js

@@ -0,0 +1,30 @@
+import syntax from './syntax/index.js';
+
+export * from './version.js';
+export { default as createSyntax } from './syntax/create.js';
+export { List } from './utils/List.js';
+export { Lexer } from './lexer/Lexer.js';
+export { tokenTypes, tokenNames, TokenStream, OffsetToLocation } from './tokenizer/index.js';
+export * as definitionSyntax from './definition-syntax/index.js';
+export { clone } from './utils/clone.js';
+export * from './utils/names.js';
+export * as ident from './utils/ident.js';
+export * as string from './utils/string.js';
+export * as url from './utils/url.js';
+export const {
+    tokenize,
+    parse,
+    generate,
+    lexer,
+    createLexer,
+
+    walk,
+    find,
+    findLast,
+    findAll,
+
+    toPlainObject,
+    fromPlainObject,
+
+    fork
+} = syntax;