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/diff/libesm/patch/reverse.js

@@ -0,0 +1,23 @@
+export function reversePatch(structuredPatch) {
+    if (Array.isArray(structuredPatch)) {
+        // (See comment in unixToWin for why we need the pointless-looking anonymous function here)
+        return structuredPatch.map(patch => reversePatch(patch)).reverse();
+    }
+    return Object.assign(Object.assign({}, structuredPatch), { oldFileName: structuredPatch.newFileName, oldHeader: structuredPatch.newHeader, newFileName: structuredPatch.oldFileName, newHeader: structuredPatch.oldHeader, hunks: structuredPatch.hunks.map(hunk => {
+            return {
+                oldLines: hunk.newLines,
+                oldStart: hunk.newStart,
+                newLines: hunk.oldLines,
+                newStart: hunk.oldStart,
+                lines: hunk.lines.map(l => {
+                    if (l.startsWith('-')) {
+                        return `+${l.slice(1)}`;
+                    }
+                    if (l.startsWith('+')) {
+                        return `-${l.slice(1)}`;
+                    }
+                    return l;
+                })
+            };
+        }) });
+}