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/treeview/prism-treeview.min.js

@@ -0,0 +1 @@
+"undefined"!=typeof Prism&&(Prism.languages.treeview={"treeview-part":{pattern:/^.+/m,inside:{"entry-line":[{pattern:/\|-- |├── /,alias:"line-h"},{pattern:/\| {3}|│ {3}/,alias:"line-v"},{pattern:/`-- |└── /,alias:"line-v-last"},{pattern:/ {4}/,alias:"line-v-gap"}],"entry-name":{pattern:/.*\S.*/,inside:{operator:/ -> /}}}}},Prism.hooks.add("wrap",(function(e){if("treeview"===e.language&&"entry-name"===e.type){var t=e.classes,n=/(^|[^\\])\/\s*$/;if(n.test(e.content))e.content=e.content.replace(n,"$1"),t.push("dir");else{e.content=e.content.replace(/(^|[^\\])[=*|]\s*$/,"$1");for(var a=e.content.toLowerCase().replace(/\s+/g,"").split(".");a.length>1;)a.shift(),t.push("ext-"+a.join("-"))}"."===e.content[0]&&t.push("dotfile")}})));