Platform upgrade: login auth fix, OCR/OSS upload, system menus and dicts, weather dashboard, weighing and invoice modules

backend/AgriculturalPlatform.Api/Controllers/AboutController.cs

@@ -0,0 +1,22 @@
+using AgriculturalPlatform.Api.Dtos;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace AgriculturalPlatform.Api.Controllers;
+
+/// <summary>关于信息</summary>
+[ApiController]
+[Route("api/about")]
+public class AboutController : ControllerBase
+{
+    [HttpGet]
+    [AllowAnonymous]
+    public ActionResult<AboutDto> Get() => Ok(new AboutDto(
+        AppName: "农易富农产品收购交易平台",
+        Version: "2.0.0",
+        Copyright: "Copyright © 2026 bbitcn.com 版权所有",
+        Company: "百博信息技术有限公司",
+        License: "企业版授权 · 单组织部署许可",
+        Description: "面向农产品收购企业的数字化管理平台，覆盖农户档案、过磅称重、收购结算、票据打印、通知公告等功能。",
+        BuiltAt: new DateTime(2026, 8, 13)));
+}