Initial eth_hedge_sim: P0 market, auth UI, one-click deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/vite.config.ts

@@ -0,0 +1,17 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 5173,
+    proxy: {
+      "/api": "http://127.0.0.1:5155",
+      "/health": "http://127.0.0.1:5155",
+    },
+  },
+  build: {
+    outDir: "dist",
+    emptyOutDir: true,
+  },
+});