feat: initial HSAP platform

Huaxu Sentinel Active Safety Platform with embedded algorithm code,
Docker Compose setup, and vendored dataset scaffolds for clone-and-run.

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

platform/web/vite.config.ts

@@ -0,0 +1,22 @@
+import { defineConfig, loadEnv } from "vite";
+import react from "@vitejs/plugin-react";
+
+export default defineConfig(({ mode }) => {
+  const env = loadEnv(mode, process.cwd(), "");
+  const proxyTarget = env.VITE_API_PROXY || "http://127.0.0.1:8787";
+
+  return {
+    plugins: [react()],
+    server: {
+      host: true,
+      port: 5173,
+      proxy: {
+        "/api": { target: proxyTarget, changeOrigin: true },
+      },
+    },
+    build: {
+      outDir: "dist",
+      emptyOutDir: true,
+    },
+  };
+});