Align console behavior with operator routing and image workflow expectations

Constraint: Must preserve current exchange-rate logic, same-group routing boundary, and temporary image-file behavior while fixing UX-visible inconsistencies.
Rejected: Large frontend chunk refactor | introduced risky circular chunking and did not improve deliverability for this rollout.
Confidence: medium
Scope-risk: moderate
Directive: Keep channel failover constrained to the selected group and preserve Beijing-day semantics for user cache dashboard metrics.
Tested: go test ./controller ./model ./service ./common -count=1; npm run build; remote smoke on source deployment at http://38.76.218.56:18081/ plus /api/status and /api/image-studio/settings.
Not-tested: Browser-driven end-to-end verification of every console page interaction.

model/log.go

@@ -221,11 +221,9 @@ type CacheDashboardMetrics struct {
 }
 
 type cacheMetricRow struct {
-	CreatedAt         int64  `gorm:"column:created_at"`
-	PromptTokens      int    `gorm:"column:prompt_tokens"`
-	CompletionTokens  int    `gorm:"column:completion_tokens"`
-	ModelName         string `gorm:"column:model_name"`
-	Other             string `gorm:"column:other"`
+	CreatedAt    int64  `gorm:"column:created_at"`
+	PromptTokens int    `gorm:"column:prompt_tokens"`
+	Other        string `gorm:"column:other"`
 }
 
 type DashboardConsumeStats struct {
@@ -330,14 +328,26 @@ func finalizeCacheMetrics(m *CacheDashboardMetrics) {
 	}
 }
 
+var dashboardMetricsLocation = time.FixedZone("Asia/Shanghai", 8*60*60)
+
+func getDashboardDayStartUnix(now time.Time) int64 {
+	localNow := now.In(dashboardMetricsLocation)
+	return time.Date(
+		localNow.Year(),
+		localNow.Month(),
+		localNow.Day(),
+		0, 0, 0, 0,
+		dashboardMetricsLocation,
+	).Unix()
+}
+
 func GetUserCacheDashboardMetrics(userId int) (CacheDashboardMetrics, CacheDashboardMetrics, error) {
-	now := time.Now()
-	start := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location()).Unix()
+	start := getDashboardDayStartUnix(time.Now())
 	overall := CacheDashboardMetrics{}
 	today := CacheDashboardMetrics{}
 	var rows []cacheMetricRow
 	err := LOG_DB.Model(&Log{}).
-		Select("created_at, prompt_tokens, completion_tokens, model_name, other").
+		Select("created_at, prompt_tokens, other").
 		Where("user_id = ? AND type = ?", userId, LogTypeConsume).
 		Order("id ASC").
 		FindInBatches(&rows, 1000, func(tx *gorm.DB, batch int) error {