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/mdast-util-to-markdown/lib/util/pattern-in-scope.js

@@ -0,0 +1,41 @@
+/**
+ * @import {ConstructName, Unsafe} from 'mdast-util-to-markdown'
+ */
+
+/**
+ * @param {Array<ConstructName>} stack
+ * @param {Unsafe} pattern
+ * @returns {boolean}
+ */
+export function patternInScope(stack, pattern) {
+  return (
+    listInScope(stack, pattern.inConstruct, true) &&
+    !listInScope(stack, pattern.notInConstruct, false)
+  )
+}
+
+/**
+ * @param {Array<ConstructName>} stack
+ * @param {Unsafe['inConstruct']} list
+ * @param {boolean} none
+ * @returns {boolean}
+ */
+function listInScope(stack, list, none) {
+  if (typeof list === 'string') {
+    list = [list]
+  }
+
+  if (!list || list.length === 0) {
+    return none
+  }
+
+  let index = -1
+
+  while (++index < list.length) {
+    if (stack.includes(list[index])) {
+      return true
+    }
+  }
+
+  return false
+}