fix: rebuild MES as compilable go-zero+ent backend (renamed bj_power_mes), restore 3 workstation projects from pristine original, align naming; all Go projects go build clean

bj_power_mes/internal/logic/dock/common.go

@@ -0,0 +1,49 @@
+package dock
+
+import (
+	"fmt"
+
+	"bj_power_mes/constants"
+	"bj_power_mes/ent"
+	"bj_power_mes/internal/types"
+)
+
+func statusToString(s int) string {
+	switch s {
+	case 0:
+		return "EMPTY"
+	case 1:
+		return "FILL"
+	case 2:
+		return "PROCESSING"
+	case 3:
+		return "DONE"
+	default:
+		return fmt.Sprintf("UNKNOWN_%d", s)
+	}
+}
+
+func determineDockSlotStatus(slot *ent.DockSlot, job *ent.Job) int {
+	if slot.CurrentJobId == nil || *slot.CurrentJobId == 0 {
+		return 0 // EMPTY
+	}
+	if job.Status == constants.JobStatus_Created {
+		return 1 // FILL
+	}
+	if job.Status == constants.JobStatus_Completed {
+		return 3 // DONE
+	}
+	return 2 // PROCESSING
+}
+
+func toJobBrief(j *ent.Job) *types.JobBrief {
+	brief := &types.JobBrief{
+		Id:            j.ID,
+		WorkOrderId:   j.WorkOrderId,
+		WorkpieceNo:   j.WorkpieceNo,
+		ProductTypeId: j.ProductTypeId,
+		Status:        string(j.Status),
+		CurrentStepId: j.CurrentStepId,
+	}
+	return brief
+}