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/check-bullet-other.js

@@ -0,0 +1,38 @@
+/**
+ * @import {Options, State} from 'mdast-util-to-markdown'
+ */
+
+import {checkBullet} from './check-bullet.js'
+
+/**
+ * @param {State} state
+ * @returns {Exclude<Options['bullet'], null | undefined>}
+ */
+export function checkBulletOther(state) {
+  const bullet = checkBullet(state)
+  const bulletOther = state.options.bulletOther
+
+  if (!bulletOther) {
+    return bullet === '*' ? '-' : '*'
+  }
+
+  if (bulletOther !== '*' && bulletOther !== '+' && bulletOther !== '-') {
+    throw new Error(
+      'Cannot serialize items with `' +
+        bulletOther +
+        '` for `options.bulletOther`, expected `*`, `+`, or `-`'
+    )
+  }
+
+  if (bulletOther === bullet) {
+    throw new Error(
+      'Expected `bullet` (`' +
+        bullet +
+        '`) and `bulletOther` (`' +
+        bulletOther +
+        '`) to be different'
+    )
+  }
+
+  return bulletOther
+}