fix(api): update amp module only on config changes

internal/api/server.go

@@ -12,6 +12,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"reflect"
 	"strings"
 	"sync"
 	"sync/atomic"
@@ -990,7 +991,9 @@ func (s *Server) UpdateClients(cfg *config.Config) {
 		s.mgmt.SetAuthManager(s.handlers.AuthManager)
 	}
 
-	// Notify Amp module of config changes (for model mapping hot-reload)
+	// Notify Amp module only when Amp config has changed.
+	ampConfigChanged := oldCfg == nil || !reflect.DeepEqual(oldCfg.AmpCode, cfg.AmpCode)
+	if ampConfigChanged {
 		if s.ampModule != nil {
 			log.Debugf("triggering amp module config update")
 			if err := s.ampModule.OnConfigUpdated(cfg); err != nil {
@@ -999,6 +1002,7 @@ func (s *Server) UpdateClients(cfg *config.Config) {
 		} else {
 			log.Warnf("amp module is nil, skipping config update")
 		}
+	}
 
 	// Count client sources from configuration and auth store.
 	tokenStore := sdkAuth.GetTokenStore()