fix(plan): 修复生产计划新增无效的全部根因

1. MillProductionPlan Domain：将 sgSign/inMatLen/inMatWt/inMatDia/inMatInDia
   重命名为前端一致的 alloyNo/inMatLength/inMatWeight/inMatOd/inMatId，新增 passCount

2. MillProductionPlanMapper.xml：
   - resultMap 用老 DB 列名（sg_sign/in_mat_wt 等）映射新 Java 属性名
   - INSERT/UPDATE/SELECT 全部对齐，keyProperty 改为 planId
   - ORDER BY 改为 plan_id（原为不存在的 id 列）
   - 新增 pass_count 映射（ALTER TABLE 已在服务器执行）

3. MillProductionPlanServiceImpl：insert 自动生成 planNo（P+时间戳）
   防止 plan_no NOT NULL 约束导致插入失败

4. MillProcessRecipeMapper.xml：keyProperty="id" 改为 keyProperty="recipeId"
   修复 addRecipe 后 recipe.getRecipeId() 返回 null 导致无法绑定计划

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MillProductionPlan.java

@@ -15,15 +15,11 @@ public class MillProductionPlan extends BaseEntity {
     @Excel(name = "计划号")
     private String planNo;
 
-    private String matSeqNo;
-    private String unitCode;
-    private String planType;
-
     /** 0-待生产 1-生产中 2-完成 3-撤销 */
     @Excel(name = "计划状态")
     private String planStatus;
 
-    /** Rolling / NextCoil / Idle */
+    /** Idle / Rolling / NextCoil */
     @Excel(name = "生产状态")
     private String prodStatus;
 
@@ -33,36 +29,33 @@ public class MillProductionPlan extends BaseEntity {
     @Excel(name = "钢卷编号")
     private String inMatNo;
 
+    @Excel(name = "合金牌号")
+    private String alloyNo;
+
     @Excel(name = "采料厚度(mm)")
     private BigDecimal inMatThick;
 
     @Excel(name = "采料宽度(mm)")
     private BigDecimal inMatWidth;
 
-    @Excel(name = "采料重量(kg)")
-    private BigDecimal inMatWt;
+    @Excel(name = "采料重量(t)")
+    private BigDecimal inMatWeight;
 
     @Excel(name = "采料长度(m)")
-    private BigDecimal inMatLen;
+    private BigDecimal inMatLength;
 
     @Excel(name = "采料内径(mm)")
-    private BigDecimal inMatInDia;
+    private BigDecimal inMatId;
 
     @Excel(name = "采料外径(mm)")
-    private BigDecimal inMatDia;
-
-    @Excel(name = "炉号")
-    private String pono;
-
-    @Excel(name = "合金牌号")
-    private String sgSign;
-
-    @Excel(name = "出口材料号")
-    private String outMatNo;
+    private BigDecimal inMatOd;
 
     @Excel(name = "成品厚度(mm)")
     private BigDecimal outThick;
 
+    @Excel(name = "道次数")
+    private Integer passCount;
+
     @Excel(name = "工艺方案ID")
     private Long recipeId;
 

ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MillProductionPlanServiceImpl.java

@@ -32,6 +32,10 @@ public class MillProductionPlanServiceImpl implements IMillProductionPlanService
         // 新计划追加到队列末尾
         List<MillProductionPlan> all = planMapper.selectList(new MillProductionPlan());
         plan.setSortNo(all.size() + 1);
+        // plan_no NOT NULL，若前端未传则自动生成
+        if (plan.getPlanNo() == null || plan.getPlanNo().isEmpty()) {
+            plan.setPlanNo("P" + System.currentTimeMillis());
+        }
         return planMapper.insert(plan);
     }