补齐产量报表2个端点（adjustment-history/export占位）+修复前端API路径参数 + 新增DTO + Repository方法

frontend/src/views/production/ProductionPage.vue

@@ -200,7 +200,7 @@ async function showHistory(row: ProductionRecord) {
   historyTitle.value = `修正历史 - ${row.machineName} - ${row.date}`
   historyLoading.value = true
   try {
-    const res = await request.get<{ items: any[] }>('/admin/production/adjustment-history', { params: { recordId: row.id } })
+    const res = await request.get<{ items: any[] }>(`/admin/production/${row.id}/adjustment-history`)
     historyRows.value = res.data?.items ?? []
   } finally {
     historyLoading.value = false

src/CncModels/Dto/Production/AdjustmentHistoryItem.cs

@@ -0,0 +1,26 @@
+namespace CncModels.Dto.Production
+{
+    /// <summary>
+    /// 产量修正历史记录项
+    /// </summary>
+    public class AdjustmentHistoryItem
+    {
+        /// <summary>修正记录ID</summary>
+        public int Id { get; set; }
+
+        /// <summary>修正前值</summary>
+        public string OldValue { get; set; }
+
+        /// <summary>修正后值</summary>
+        public string NewValue { get; set; }
+
+        /// <summary>修正原因</summary>
+        public string Reason { get; set; }
+
+        /// <summary>操作人IP</summary>
+        public string OperatorIp { get; set; }
+
+        /// <summary>修正时间</summary>
+        public string CreatedAt { get; set; }
+    }
+}

src/CncRepository/Impl/ProductionAdjustmentRepository.cs

@@ -45,5 +45,16 @@ namespace CncRepository.Impl
                 return new PagedResult<ProductionAdjustment> { Items = items, Total = total, Page = page, PageSize = pageSize };
             }
         }
+
+        /// <inheritdoc/>
+        public List<ProductionAdjustment> GetByTargetId(int targetId)
+        {
+            using (var conn = CreateConnection())
+            {
+                return conn.Query<ProductionAdjustment>(
+                    "SELECT * FROM cnc_production_adjustment WHERE target_id = @TargetId ORDER BY created_at DESC",
+                    new { TargetId = targetId }).AsList();
+            }
+        }
     }
 }

src/CncRepository/Interface/IProductionAdjustmentRepository.cs

@@ -12,5 +12,6 @@ namespace CncRepository.Interface
     {
         int Create(ProductionAdjustment entity);
         PagedResult<ProductionAdjustment> GetList(string targetTable, DateTime? startDate, DateTime? endDate, string keyword, int page, int pageSize);
+        List<ProductionAdjustment> GetByTargetId(int targetId);
     }
 }

src/CncService/Impl/ProductionService.cs

@@ -75,5 +75,25 @@ namespace CncService.Impl
             _productionAdjustmentRepository.Create(entity);
             return true;
         }
+
+        /// <inheritdoc/>
+        public List<AdjustmentHistoryItem> GetAdjustmentHistory(int recordId)
+        {
+            var records = _productionAdjustmentRepository.GetByTargetId(recordId);
+            var result = new List<AdjustmentHistoryItem>();
+            foreach (var r in records)
+            {
+                result.Add(new AdjustmentHistoryItem
+                {
+                    Id = (int)r.Id,
+                    OldValue = r.OldValue?.ToString() ?? "-",
+                    NewValue = r.NewValue.ToString(),
+                    Reason = r.Reason ?? "",
+                    OperatorIp = r.OperatorIp ?? "",
+                    CreatedAt = r.CreatedAt.ToString("yyyy-MM-dd HH:mm:ss")
+                });
+            }
+            return result;
+        }
     }
 }

src/CncService/Interface/IProductionService.cs

@@ -21,5 +21,10 @@ namespace CncService.Interface
 
         /// <summary>产量修正</summary>
         bool Adjust(ProductionAdjustRequest request);
+
+        /// <summary>
+        /// 获取某条产量记录的修正历史
+        /// </summary>
+        List<AdjustmentHistoryItem> GetAdjustmentHistory(int recordId);
     }
 }

src/CncWebApi/Controllers/ProductionController.cs

@@ -60,5 +60,29 @@ namespace CncWebApi.Controllers
             var result = _productionService.Adjust(request);
             return Ok(ApiResponse<object>.Success(null));
         }
+
+        /// <summary>
+        /// 修正历史
+        /// GET /api/admin/production/{recordId}/adjustment-history
+        /// </summary>
+        [HttpGet]
+        [Route("{recordId:int}/adjustment-history")]
+        public IHttpActionResult GetAdjustmentHistory(int recordId)
+        {
+            var result = _productionService.GetAdjustmentHistory(recordId);
+            return Ok(ApiResponse<object>.Success(new { items = result }));
+        }
+
+        /// <summary>
+        /// 导出报表（占位，暂返回空结果）
+        /// GET /api/admin/production/export
+        /// </summary>
+        [HttpGet]
+        [Route("export")]
+        public IHttpActionResult Export(DateTime? startDate = null, DateTime? endDate = null, int? workshopId = null)
+        {
+            // 导出功能暂不实现，返回提示
+            return Ok(ApiResponse<object>.Fail(40001, "导出功能尚未实现"));
+        }
     }
 }