Remove deprecated code

pkg/config/config.go

@@ -32,19 +32,7 @@ func LoadConfig(configPath string) (AppConfig, error) {
 	// 3. Override with environment variables
 	loadEnvVars(&cfg)
 
-	// Log warning if deprecated inference keys are present
-	if len(cfg.Auth.InferenceKeys) > 0 {
-		log.Println("⚠️ Config-based inference keys are no longer supported and will be ignored.")
-		log.Println("    Please create inference keys in web UI or via management API.")
-	}
-
 	// Set default directories if not specified
-	if cfg.Instances.InstancesDir == "" {
-		cfg.Instances.InstancesDir = filepath.Join(cfg.DataDir, "instances")
-	} else {
-		// Log deprecation warning if using custom instances dir
-		log.Println("⚠️ Instances directory is deprecated and will be removed in future versions. Instances are persisted in the database.")
-	}
 	if cfg.Instances.LogsDir == "" {
 		cfg.Instances.LogsDir = filepath.Join(cfg.DataDir, "logs")
 	}
@@ -101,7 +89,6 @@ func (cfg *AppConfig) SanitizedCopy() (AppConfig, error) {
 	}
 
 	// Clear sensitive information
-	sanitized.Auth.InferenceKeys = []string{}
 	sanitized.Auth.ManagementKeys = []string{}
 
 	// Clear API keys from nodes