feat: 初始化进销存数据开放平台项目

初始化完整的前后端项目结构，包含ThinkPHP后端API服务和Next.js前端管理系统，添加基础配置、中间件、模型、路由等核心代码，以及项目文档和静态资源。

thinkphp/_postman_helper.php

@@ -0,0 +1,35 @@
+<?php
+
+$API_KEY = "4e2bf206a82f846c699e978cea8c2f87";
+$API_SECRET = "e763f998cbc9ceb3ff41356638d18e7725cb6b6d2ae02bdc4bdbba55a0978a4f";
+
+$params = [
+    "start_date" => "2024-02-02",
+    "end_date" => "2026-06-22",
+    "page" => "1",
+    "limit" => "100",
+];
+
+$timestamp = strval(time());
+
+ksort($params);
+$paramStr = "";
+foreach ($params as $k => $v) {
+    if ($v !== null && $v !== "") {
+        if ($paramStr) $paramStr .= "&";
+        $paramStr .= "{$k}={$v}";
+    }
+}
+$fullStr = "{$paramStr}&timestamp={$timestamp}";
+
+$sign = hash_hmac("sha256", $fullStr, $API_SECRET);
+
+echo "=" . str_repeat("=", 59) . "\n";
+echo "Postman 请求配置\n";
+echo "=" . str_repeat("=", 59) . "\n";
+echo "GET http://localhost:8000/api/v1/chuku?{$paramStr}\n\n";
+echo "Headers:\n";
+echo "  X-API-Key:   {$API_KEY}\n";
+echo "  X-Timestamp: {$timestamp}\n";
+echo "  X-Sign:      {$sign}\n\n";
+echo "注意: 签名有效期 7 天，过期请重新运行此脚本生成\n";