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/@img/colour/README.md

@@ -0,0 +1,15 @@
+# `@img/colour`
+
+The latest version of the
+[color](https://www.npmjs.com/package/color)
+package is now ESM-only,
+however some JavaScript runtimes do not yet support this,
+which includes versions of Node.js prior to 20.19.0.
+
+This package converts the `color` package and its dependencies,
+all of which are MIT-licensed, to CommonJS.
+
+- [color](https://www.npmjs.com/package/color)
+- [color-convert](https://www.npmjs.com/package/color-convert)
+- [color-string](https://www.npmjs.com/package/color-string)
+- [color-name](https://www.npmjs.com/package/color-name)