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/@img/sharp-libvips-darwin-arm64/versions.json

@@ -0,0 +1,30 @@
+{
+  "aom": "3.13.1",
+  "archive": "3.8.2",
+  "cairo": "1.18.4",
+  "cgif": "0.5.0",
+  "exif": "0.6.25",
+  "expat": "2.7.3",
+  "ffi": "3.5.2",
+  "fontconfig": "2.17.1",
+  "freetype": "2.14.1",
+  "fribidi": "1.0.16",
+  "glib": "2.86.1",
+  "harfbuzz": "12.1.0",
+  "heif": "1.20.2",
+  "highway": "1.3.0",
+  "imagequant": "2.4.1",
+  "lcms": "2.17",
+  "mozjpeg": "0826579",
+  "pango": "1.57.0",
+  "pixman": "0.46.4",
+  "png": "1.6.50",
+  "proxy-libintl": "0.5",
+  "rsvg": "2.61.2",
+  "spng": "0.7.4",
+  "tiff": "4.7.1",
+  "vips": "8.17.3",
+  "webp": "1.6.0",
+  "xml2": "2.15.1",
+  "zlib-ng": "2.2.5"
+}