feat: 装配线看板修正、统一密钥Hardman_2026、操作日志追溯、日志按天存储

Dashboard 移除 CNC/清洗机等不存在设备，改为纯装配线看板（扫码枪+拧紧枪+人工）；JWT/内部token统一为 Hardman_2026 写入各 etc/*.yaml，MES 建表 DSN 改读 yaml；event_log 增加 workOrderNo/operator，BOM/备料/PLC下发/拧紧/扫码报工/半成品/AGV 全链路埋点，日志页支持工单号/操作人筛选；MES/WMS 日志按天存储（dailyWriter），WMS SetWriter 用 logx.NewWriter 适配

bj_power_mes/internal/eventbus/bus.go

@@ -54,6 +54,15 @@ const (
 	// 连接状态事件
 	EventConnectionStatusUpdated EventType = "CONNECTION_STATUS_UPDATED"
 
+	// 装配线操作日志事件（工单/工件/操作步骤/人员可追溯）
+	EventBomSaved          EventType = "BOM_SAVED"
+	EventMaterialRequested EventType = "MATERIAL_REQUESTED"
+	EventPlcProcessSent    EventType = "PLC_PROCESS_SENT"
+	EventTorqueReported    EventType = "TORQUE_REPORTED"
+	EventScanReported      EventType = "SCAN_REPORTED"
+	EventSemiFlow          EventType = "SEMI_FLOW"
+	EventAgvTaskCreated    EventType = "AGV_TASK_CREATED"
+
 	EventAll EventType = "*"
 )