chore: upgraded Claude model to Opus 4.6

- Update mcp/claude_client.go default model
- Update api/server.go supported models list
- Update web AITradersPage.tsx default model

api/server.go

@@ -3372,7 +3372,7 @@ func (s *Server) handleGetSupportedModels(c *gin.Context) {
 		{"id": "deepseek", "name": "DeepSeek", "provider": "deepseek", "defaultModel": "deepseek-chat"},
 		{"id": "qwen", "name": "Qwen", "provider": "qwen", "defaultModel": "qwen3-max"},
 		{"id": "openai", "name": "OpenAI", "provider": "openai", "defaultModel": "gpt-5.1"},
-		{"id": "claude", "name": "Claude", "provider": "claude", "defaultModel": "claude-opus-4-5-20251101"},
+		{"id": "claude", "name": "Claude", "provider": "claude", "defaultModel": "claude-opus-4-6"},
 		{"id": "gemini", "name": "Google Gemini", "provider": "gemini", "defaultModel": "gemini-3-pro-preview"},
 		{"id": "grok", "name": "Grok (xAI)", "provider": "grok", "defaultModel": "grok-3-latest"},
 		{"id": "kimi", "name": "Kimi (Moonshot)", "provider": "kimi", "defaultModel": "moonshot-v1-auto"},

mcp/claude_client.go

@@ -9,7 +9,7 @@ import (
 const (
 	ProviderClaude       = "claude"
 	DefaultClaudeBaseURL = "https://api.anthropic.com/v1"
-	DefaultClaudeModel   = "claude-opus-4-5-20251101"
+	DefaultClaudeModel   = "claude-opus-4-6"
 )
 
 type ClaudeClient struct {

web/src/components/AITradersPage.tsx

@@ -77,7 +77,7 @@ const AI_PROVIDER_CONFIG: Record<string, {
     apiName: 'OpenAI',
   },
   claude: {
-    defaultModel: 'claude-opus-4-5-20251101',
+    defaultModel: 'claude-opus-4-6',
     apiUrl: 'https://console.anthropic.com/settings/keys',
     apiName: 'Anthropic',
   },