feat: add new model entries for Claude Sonnet 4 and Claude Opus 4 across multiple components, including constants and cache settings

relay/channel/vertex/adaptor.go

@@ -31,6 +31,8 @@ var claudeModelMap = map[string]string{
 	"claude-3-5-sonnet-20240620": "claude-3-5-sonnet@20240620",
 	"claude-3-5-sonnet-20241022": "claude-3-5-sonnet-v2@20241022",
 	"claude-3-7-sonnet-20250219": "claude-3-7-sonnet@20250219",
+	"claude-sonnet-4-20250514":   "claude-sonnet-4@20250514",
+	"claude-opus-4-20250514":     "claude-opus-4@20250514",
 }
 
 const anthropicVersion = "vertex-2023-10-16"