refactor: 重构工艺工序相关命名与数据模型

1.  全局替换"工序"为"工艺"统一术语，包括页面文案、枚举、注释
2.  重构工单与工件工艺数据模型：
    - 新增工艺组合表flow_material作为备料/齐套唯一源头
    - 新增工位状态表station_state支持自主停单/恢复接单
    - 移除station_process派工表，改用工单工艺组合作为路线唯一源头
    - 替换processCode为flowId作为工艺关联标识
    - 重构工件当前进度字段为currentStationNo
3.  删除冗余的静态备份资源文件
4.  调整物料选择组件默认启用仅显示激活物料
5.  优化工单创建/编辑逻辑，新增工艺组合校验与保存

bj_power_mes/ent/bomitem.go

@@ -32,8 +32,6 @@ type BomItem struct {
 	Unit string `json:"unit,omitempty"`
 	// ManageMode holds the value of the "manageMode" field.
 	ManageMode string `json:"manageMode,omitempty"`
-	// 装配工序 1~12，0=不参与工位绑定
-	ProcessCode int `json:"processCode,omitempty"`
 	// 单台用量
 	UnitQty float64 `json:"unitQty,omitempty"`
 	// 损耗率%
@@ -58,7 +56,7 @@ func (*BomItem) scanValues(columns []string) ([]any, error) {
 			values[i] = new([]byte)
 		case bomitem.FieldUnitQty, bomitem.FieldLossRate, bomitem.FieldRequiredQty:
 			values[i] = new(sql.NullFloat64)
-		case bomitem.FieldID, bomitem.FieldProcessCode:
+		case bomitem.FieldID:
 			values[i] = new(sql.NullInt64)
 		case bomitem.FieldProductCode, bomitem.FieldBomName, bomitem.FieldMaterialCode, bomitem.FieldMaterialName, bomitem.FieldSpec, bomitem.FieldUnit, bomitem.FieldManageMode, bomitem.FieldRelatedStandard:
 			values[i] = new(sql.NullString)
@@ -127,12 +125,6 @@ func (_m *BomItem) assignValues(columns []string, values []any) error {
 			} else if value.Valid {
 				_m.ManageMode = value.String
 			}
-		case bomitem.FieldProcessCode:
-			if value, ok := values[i].(*sql.NullInt64); !ok {
-				return fmt.Errorf("unexpected type %T for field processCode", values[i])
-			} else if value.Valid {
-				_m.ProcessCode = int(value.Int64)
-			}
 		case bomitem.FieldUnitQty:
 			if value, ok := values[i].(*sql.NullFloat64); !ok {
 				return fmt.Errorf("unexpected type %T for field unitQty", values[i])
@@ -228,9 +220,6 @@ func (_m *BomItem) String() string {
 	builder.WriteString("manageMode=")
 	builder.WriteString(_m.ManageMode)
 	builder.WriteString(", ")
-	builder.WriteString("processCode=")
-	builder.WriteString(fmt.Sprintf("%v", _m.ProcessCode))
-	builder.WriteString(", ")
 	builder.WriteString("unitQty=")
 	builder.WriteString(fmt.Sprintf("%v", _m.UnitQty))
 	builder.WriteString(", ")