Add kigicli.dev frontend worker with built site assets

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012pFJn6ycA4hPRwM9sqasi6

frontend/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "kigi-frontend",
+  "version": "0.0.0",
+  "private": true,
+  "description": "kigicli.dev — static marketing site plus the installer proxy Worker.",
+  "scripts": {
+    "dev": "wrangler dev",
+    "deploy": "wrangler deploy",
+    "tail": "wrangler tail"
+  },
+  "devDependencies": {
+    "wrangler": "^4.120.0"
+  }
+}