feat(claude): add Claude 4.5 Haiku model definition

Author: luispater

internal/registry/model_definitions.go

@@ -8,6 +8,15 @@ import "time"
 // GetClaudeModels returns the standard Claude model definitions
 func GetClaudeModels() []*ModelInfo {
 	return []*ModelInfo{
+
+		{
+			ID:          "claude-haiku-4-5-20251001",
+			Object:      "model",
+			Created:     1759276800, // 2025-10-01
+			OwnedBy:     "anthropic",
+			Type:        "claude",
+			DisplayName: "Claude 4.5 Haiku",
+		},
 		{
 			ID:          "claude-sonnet-4-5-20250929",
 			Object:      "model",