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/css/definitions.json

@@ -0,0 +1,82 @@
+{
+  "groupList": {
+    "enum": [
+      "Compositing and Blending",
+      "CSS Anchor Positioning",
+      "CSS Animations",
+      "CSS Backgrounds and Borders",
+      "CSS Basic User Interface",
+      "CSS Box Alignment",
+      "CSS Box Model",
+      "CSS Box Sizing",
+      "CSS Cascading and Inheritance",
+      "CSS Color",
+      "CSS Conditional Rules",
+      "CSS Containment",
+      "CSS Counter Styles",
+      "CSS Custom Highlight API",
+      "CSS Custom Properties for Cascading Variables",
+      "CSS Display",
+      "CSS Easing Functions",
+      "CSS Environment Variables",
+      "CSS Flexible Box Layout",
+      "CSS Fonts",
+      "CSS Form Control Styling",
+      "CSS Fragmentation",
+      "CSS Generated Content",
+      "CSS Grid Layout",
+      "CSS Houdini",
+      "CSS Images",
+      "CSS Inline",
+      "CSS Lists and Counters",
+      "CSS Logical Properties and Values",
+      "CSS Masking",
+      "CSS Mobile Text Size Adjustment",
+      "CSS Motion Path",
+      "CSS Multi-column Layout",
+      "CSS Namespaces",
+      "CSS Nesting",
+      "CSS Overflow",
+      "CSS Overscroll Behavior",
+      "CSS Paged Media",
+      "CSS Positioned Layout",
+      "CSS Pseudo-Elements",
+      "CSS Resolutions",
+      "CSS Rhythmic Sizing",
+      "CSS Ruby",
+      "CSS Scoping",
+      "CSS Scroll Anchoring",
+      "CSS Scroll Snap",
+      "CSS Scrollbars Styling",
+      "CSS Shadow Parts",
+      "CSS Shapes",
+      "CSS Speech",
+      "CSS Syntax",
+      "CSS Table",
+      "CSS Text",
+      "CSS Text Decoration",
+      "CSS Transforms",
+      "CSS Transitions",
+      "CSS Types",
+      "CSS Values and Units",
+      "CSS View Transitions",
+      "CSS Viewport",
+      "CSS Will Change",
+      "CSS Writing Modes",
+      "Filter Effects",
+      "Fullscreen API",
+      "MathML",
+      "Media Queries",
+      "Microsoft Extensions",
+      "Motion Path",
+      "Mozilla Extensions",
+      "Pointer Events",
+      "Selectors",
+      "Scalable Vector Graphics",
+      "Scroll-driven Animations",
+      "WebKit Extensions",
+      "WebVTT",
+      "WebXR DOM Overlays"
+    ]
+  }
+}