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/sse/bridge.go

@@ -0,0 +1,54 @@
+package sse
+
+import (
+	"context"
+	"encoding/json"
+	"log/slog"
+
+	"bj_power_mes/internal/eventbus"
+	"bj_power_mes/internal/eventlog"
+)
+
+// EventBridge 将 EventBus 事件转发给 SSE 客户端，实现内部事件到前端的实时推送。
+type EventBridge struct {
+	sseHandler *Handler
+	bus        eventbus.Bus
+	sub        eventbus.Subscription
+}
+
+// NewEventBridge 创建桥接器并订阅所有 EventBus 事件。
+func NewEventBridge(bus eventbus.Bus, sseHandler *Handler) *EventBridge {
+	bridge := &EventBridge{
+		sseHandler: sseHandler,
+		bus:        bus,
+	}
+	bridge.sub = bus.SubscribeAll(bridge.onEvent)
+	return bridge
+}
+
+// Close 取消事件订阅。
+func (b *EventBridge) Close() {
+	if b.sub != nil {
+		b.sub.Unsubscribe()
+	}
+}
+
+func (b *EventBridge) onEvent(_ context.Context, event eventbus.Event) error {
+	data, err := json.Marshal(map[string]any{
+		"id":            event.ID,
+		"eventType":     string(event.Type),
+		"sourceId":      event.Source,
+		"entityType":    event.EntityType,
+		"entityId":      event.EntityID,
+		"entityVersion": event.EntityVersion,
+		"description":   eventlog.EventDescription(event),
+		"payload":       event.Payload,
+		"createdAt":     event.Timestamp.Format("2006-01-02 15:04:05"),
+	})
+	if err != nil {
+		slog.Error("eventbridge: marshal failed", "err", err)
+		return nil
+	}
+	b.sseHandler.Emit("eventbus."+string(event.Type), string(data))
+	return nil
+}