chore: 前端增加opus4.6模型映射

backend/internal/pkg/claude/constants.go

@@ -71,6 +71,12 @@ var DefaultModels = []Model{
 		DisplayName: "Claude Opus 4.5",
 		CreatedAt:   "2025-11-01T00:00:00Z",
 	},
+	{
+		ID:          "claude-opus-4-6",
+		Type:        "model",
+		DisplayName: "Claude Opus 4.6",
+		CreatedAt:   "2026-02-06T00:00:00Z",
+	},
 	{
 		ID:          "claude-sonnet-4-5-20250929",
 		Type:        "model",

backend/internal/service/pricing_service.go

@@ -579,6 +579,7 @@ func (s *PricingService) extractBaseName(model string) string {
 func (s *PricingService) matchByModelFamily(model string) *LiteLLMModelPricing {
 	// Claude模型系列匹配规则
 	familyPatterns := map[string][]string{
+		"opus-4.6":   {"claude-opus-4.6", "claude-opus-4-6"},
 		"opus-4.5":   {"claude-opus-4.5", "claude-opus-4-5"},
 		"opus-4":     {"claude-opus-4", "claude-3-opus"},
 		"sonnet-4.5": {"claude-sonnet-4.5", "claude-sonnet-4-5"},