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/mdn-data/api/index.js

@@ -0,0 +1,3 @@
+module.exports = {
+  inheritance: require('./inheritance'),
+}

network-poc/frontend/node_modules/mdn-data/api/inheritance.schema.json

@@ -0,0 +1,31 @@
+{
+  "type": "object",
+  "additionalProperties": {
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {
+      "inherits": {
+        "oneOf": [
+          {
+            "type": "null"
+          },
+          {
+            "type": "string",
+            "minLength": 1
+          }
+        ]
+      },
+      "implements": {
+        "minItems": 0,
+        "uniqueItems": true,
+        "items": {
+          "type": "string"
+        }
+      }
+    },
+    "required": [
+      "inherits",
+      "implements"
+    ]
+  }
+}