新增农户功能升级：身份证OCR/OSS上传、头像采集、同名村检测、Region热度排序及表单体验优化

- Region 表新增热度列，热门省份优先显示 - 区县下拉按地级市分组、已录区县优先、支持全省搜索 - 组选择内置一组至二十组 - 银行卡号独立行+粗体预览，开户行独立行 - 新增农户类型：农户/个体户/合作社/经营集体/公司 - 身份证正反面支持高拍仪/摄像头OCR与手机扫码上传，附件存本地/OSS - 新增农户头像采集组件（摄像头/本地上传），预留人脸识别收购扩展 - 同名村弹窗提醒（防选错乡镇） - 编辑窗体禁止遮罩/Esc误关，整体加宽适配高频操作 - 修复二维码局域网手机无法访问（监听0.0.0.0、局域网IP识别、Vite代理兜底）
2026-08-13 16:07:35 +08:00
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+using AgriculturalPlatform.Api.Data;
+using AgriculturalPlatform.Api.Models;
+using AgriculturalPlatform.Api.Services;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace AgriculturalPlatform.Api.Controllers;
+
+/// <summary>管理功能：演示数据等</summary>
+[ApiController]
+[Route("api/admin")]
+[Authorize]
+public class AdminController(AppDbContext db, CurrentUserService currentUser) : ControllerBase
+{
+    /// <summary>
+    /// 创建当日演示数据：随机生成 20-60 条蚕茧收购单（已完成）
+    /// 等级为「正茧 / 双宫 / 黄斑 / 血茧」之一，其中 95% 概率为正茧。
+    /// </summary>
+    [HttpPost("demo-data")]
+    public async Task<ActionResult> CreateDemoData()
+    {
+        var rnd = Random.Shared;
+        var now = DateTime.Now;
+        var todayStart = now.Date;
+
+        // 1. 品种：蚕茧（不存在则自动创建）
+        var cocoon = await db.Products.FirstOrDefaultAsync(p => p.Name == "蚕茧");
+        if (cocoon is null)
+        {
+            cocoon = new Product
+            {
+                Name = "蚕茧",
+                Category = "经济作物",
+                Unit = "公斤",
+                Spec = "鲜茧含水率≤15%",
+                Price = 30m,
+                CreatedAt = now
+            };
+            db.Products.Add(cocoon);
+            await db.SaveChangesAsync();
+        }
+
+        // 2. 农户（活跃）
+        var farmerIds = await db.Farmers
+            .Where(f => f.Status == FarmerStatus.Active)
+            .Select(f => f.Id).ToListAsync();
+        if (farmerIds.Count == 0)
+            return BadRequest(new { message = "暂无农户数据，请先在「农户管理」中创建农户" });
+
+        // 3. 收购组织：优先当前用户所属组织（保证数据可见），否则随机
+        var cu = currentUser.Get();
+        int orgId;
+        if (cu?.OrgId is { } oid && await db.Organizations.AnyAsync(o => o.Id == oid))
+            orgId = oid;
+        else
+        {
+            var orgIds = await db.Organizations.Select(o => o.Id).ToListAsync();
+            if (orgIds.Count == 0)
+                return BadRequest(new { message = "暂无组织数据，请先在「组织管理」中创建组织" });
+            orgId = orgIds[rnd.Next(orgIds.Count)];
+        }
+
+        // 4. 随机生成 20-60 条
+        var count = rnd.Next(20, 61);
+        var baseSeq = await db.PurchaseOrders.CountAsync(x =>
+            x.CreatedAt >= todayStart && x.CreatedAt < todayStart.AddDays(1));
+
+        var grades = new[] { "双宫", "黄斑", "血茧" };
+        var orders = new List<PurchaseOrder>();
+        for (var i = 0; i < count; i++)
+        {
+            // 等级：95% 正茧，其余在双宫/黄斑/血茧中随机
+            var grade = rnd.Next(100) < 95 ? "正茧" : grades[rnd.Next(grades.Length)];
+
+            // 单价（元/公斤）按等级定价
+            var unitPrice = grade switch
+            {
+                "正茧" => rnd.Next(2800, 3601) / 100m,   // 28.00 - 36.00
+                "双宫" => rnd.Next(1800, 2401) / 100m,   // 18.00 - 24.00
+                "黄斑" => rnd.Next(1000, 1501) / 100m,   // 10.00 - 15.00
+                _ => rnd.Next(500, 901) / 100m           // 血茧 5.00 - 9.00
+            };
+
+            // 重量：净重 15-150kg，皮重 3-9kg
+            var net = rnd.Next(1500, 15000) / 100m;
+            var tare = rnd.Next(300, 900) / 100m;
+
+            // 时间：今日 06:00-22:00 随机进场
+            var weighIn = todayStart.AddHours(rnd.Next(6, 22)).AddMinutes(rnd.Next(0, 60));
+            var weighOut = weighIn.AddMinutes(rnd.Next(5, 25));
+
+            orders.Add(new PurchaseOrder
+            {
+                OrderNo = $"CG{todayStart:yyyyMMdd}-{baseSeq + i + 1:D4}",
+                FarmerId = farmerIds[rnd.Next(farmerIds.Count)],
+                ProductId = cocoon.Id,
+                PurchaserOrgId = orgId,
+                Grade = grade,
+                Unit = "公斤",
+                UnitPrice = unitPrice,
+                GrossWeight = net + tare,
+                TareWeight = tare,
+                NetWeight = net,
+                Amount = Math.Round(net * unitPrice, 2),
+                WeighCount = 2,
+                Status = PurchaseStatus.Completed,
+                OperatorId = cu?.Id,
+                WeighInAt = weighIn,
+                WeighOutAt = weighOut,
+                CreatedAt = weighIn,
+                UpdatedAt = weighOut,
+                Notes = "演示数据"
+            });
+        }
+
+        db.PurchaseOrders.AddRange(orders);
+        await db.SaveChangesAsync();
+
+        return Ok(new { created = orders.Count, from = todayStart, to = now });
+    }
+}