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/handle/index.js

@@ -0,0 +1,45 @@
+import {blockquote} from './blockquote.js'
+import {hardBreak} from './break.js'
+import {code} from './code.js'
+import {definition} from './definition.js'
+import {emphasis} from './emphasis.js'
+import {heading} from './heading.js'
+import {html} from './html.js'
+import {image} from './image.js'
+import {imageReference} from './image-reference.js'
+import {inlineCode} from './inline-code.js'
+import {link} from './link.js'
+import {linkReference} from './link-reference.js'
+import {list} from './list.js'
+import {listItem} from './list-item.js'
+import {paragraph} from './paragraph.js'
+import {root} from './root.js'
+import {strong} from './strong.js'
+import {text} from './text.js'
+import {thematicBreak} from './thematic-break.js'
+
+/**
+ * Default (CommonMark) handlers.
+ */
+export const handle = {
+  blockquote,
+  break: hardBreak,
+  code,
+  definition,
+  emphasis,
+  hardBreak,
+  heading,
+  html,
+  image,
+  imageReference,
+  inlineCode,
+  link,
+  linkReference,
+  list,
+  listItem,
+  paragraph,
+  root,
+  strong,
+  text,
+  thematicBreak
+}