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/env.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+# 将 Node.js（~/.local/node）加入 PATH，供 npm run dev 使用
+export PATH="${HOME}/.local/node/bin:${PATH}"