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/@shikijs/engine-javascript/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "@shikijs/engine-javascript",
+  "type": "module",
+  "version": "4.0.2",
+  "description": "Engine for Shiki using JavaScript's native RegExp",
+  "author": "Anthony Fu <anthonyfu117@hotmail.com>",
+  "license": "MIT",
+  "homepage": "https://github.com/shikijs/shiki#readme",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/shikijs/shiki.git",
+    "directory": "packages/engine-javascript"
+  },
+  "bugs": "https://github.com/shikijs/shiki/issues",
+  "keywords": [
+    "shiki",
+    "shiki-engine"
+  ],
+  "sideEffects": false,
+  "exports": {
+    ".": "./dist/index.mjs",
+    "./raw": "./dist/engine-raw.mjs"
+  },
+  "main": "./dist/index.mjs",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.mts",
+  "files": [
+    "dist"
+  ],
+  "engines": {
+    "node": ">=20"
+  },
+  "dependencies": {
+    "@shikijs/vscode-textmate": "^10.0.2",
+    "oniguruma-to-es": "^4.3.4",
+    "@shikijs/types": "4.0.2"
+  },
+  "scripts": {
+    "build": "tsdown",
+    "dev": "tsdown --watch"
+  }
+}