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/internal/logic/stationstate.go

@@ -0,0 +1,116 @@
+package logic
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+
+	"bj_power_mes/ent"
+	"bj_power_mes/ent/stationstate"
+	"bj_power_mes/ent/workorder"
+)
+
+// ---------- 工位停单（station_state，只认当天） ----------
+
+// SetStationPause 工人自主停单/恢复（某工位当天停止/恢复接单）。
+// upsert：stationNo+date 唯一；恢复=标记可用即续走，工单/组合/排产三要素零变动。
+// 停单瞬间做「工艺全停」判定：某工艺绑定的全部工位当天都停单 → 报警(flow_all_paused)+事件日志。
+func (s *Service) SetStationPause(ctx context.Context, stationNo int, paused bool, reason, operator string) error {
+	if stationNo <= 0 {
+		return errors.New("stationNo 必填")
+	}
+	date := TodayStr()
+	exist, err := s.ctx.EntClient.StationState.Query().
+		Where(stationstate.StationNo(stationNo), stationstate.Date(date)).Only(ctx)
+	if err != nil && !ent.IsNotFound(err) {
+		return err
+	}
+	if exist == nil {
+		if err := s.ctx.EntClient.StationState.Create().
+			SetStationNo(stationNo).SetDate(date).SetPaused(paused).
+			SetReason(reason).SetOperator(operator).Exec(ctx); err != nil {
+			return err
+		}
+	} else {
+		if err := s.ctx.EntClient.StationState.UpdateOneID(exist.ID).
+			SetPaused(paused).SetReason(reason).SetOperator(operator).Exec(ctx); err != nil {
+			return err
+		}
+	}
+	action := "工位恢复接单"
+	eventType := "station.respawn"
+	if paused {
+		action = "工位停止接单（停单）"
+		eventType = "station.pause"
+	}
+	s.ctx.EventLog.Write(ctx, eventType, "", operator, "station_state", itoa(stationNo),
+		fmt.Sprintf("%s（工位%d，%s）", action, stationNo, date),
+		map[string]any{"stationNo": stationNo, "date": date, "paused": paused, "reason": reason})
+	if paused {
+		s.checkAllPausedFlows(ctx, operator)
+	}
+	return nil
+}
+
+// checkAllPausedFlows 工艺全停判定：执行中工单的组合里，某工艺涉及的全部工位当天都停单 → 报警+日志。
+// （上位机在该工艺全停期间不下发流转指令；恢复=任一工位恢复即续走。）
+func (s *Service) checkAllPausedFlows(ctx context.Context, operator string) {
+	wos, err := s.ctx.EntClient.WorkOrder.Query().
+		Where(workorder.Status("IN_PROGRESS")).All(ctx)
+	if err != nil {
+		return
+	}
+	for _, wo := range wos {
+		items, _ := RouteStationsFromWO(ctx, s.ctx.EntClient, wo)
+		if len(items) == 0 {
+			continue
+		}
+		byFlow := map[int][]int{}
+		for _, it := range items {
+			byFlow[it.FlowId] = append(byFlow[it.FlowId], it.StationNo)
+		}
+		for flowId, stations := range byFlow {
+			allPaused := len(stations) > 0
+			parts := make([]string, 0, len(stations))
+			for _, no := range stations {
+				parts = append(parts, itoa(no))
+				if !s.GetStationPaused(ctx, no) {
+					allPaused = false
+				}
+			}
+			if !allPaused {
+				continue
+			}
+			content := fmt.Sprintf("工艺「%s」的全部工位(%s)已停单，上位机不下发流转指令",
+				s.flowNameById(ctx, flowId), strings.Join(parts, ","))
+			_, _ = s.ctx.EntClient.Alert.Create().
+				SetRuleId(0).SetType("flow_all_paused").SetTitle("工艺全停").
+				SetContent(content).SetRefType("process_flow").SetRefId(fmt.Sprintf("%d", flowId)).
+				SetOrderNo(wo.WorkOrderNo).SetReceiver("").SetStatus("UNREAD").Save(ctx)
+			s.ctx.EventLog.Write(ctx, "flow.all_paused", wo.WorkOrderNo, operator, "process_flow", itoa(flowId),
+				content, map[string]any{"flowId": flowId, "stations": stations})
+		}
+	}
+}
+
+// GetStationPaused 某工位当天是否停单（无记录=未停单）
+func (s *Service) GetStationPaused(ctx context.Context, stationNo int) bool {
+	if stationNo <= 0 {
+		return false
+	}
+	rows, err := s.ctx.EntClient.StationState.Query().
+		Where(stationstate.StationNo(stationNo), stationstate.Date(TodayStr()), stationstate.Paused(true)).
+		Limit(1).All(ctx)
+	return err == nil && len(rows) > 0
+}
+
+// ListStationStates 查询停单状态列表（date 空取当天）
+func (s *Service) ListStationStates(ctx context.Context, date string) ([]*ent.StationState, error) {
+	if date == "" {
+		date = TodayStr()
+	}
+	return s.ctx.EntClient.StationState.Query().
+		Where(stationstate.Date(date)).
+		Order(ent.Asc(stationstate.FieldStationNo)).All(ctx)
+}