Include local backend target in checkpoint identity

internal/framework/llm/promptkit_client.go

@@ -41,6 +41,7 @@ type PromptKitClient struct {
 	recorder        *LLMProfileRecorder
 	profileDir      string
 	profileFile     string
+	localEndpoint   string
 	reasoningEffort *string
 }
 
@@ -70,9 +71,11 @@ func NewPromptKitClient(cfg PromptKitClientConfig) (*PromptKitClient, error) {
 	if profileFile := strings.TrimSpace(cfg.ProfileFile); profileFile != "" {
 		options = append(options, promptkit.WithProfileFile(profileFile))
 	}
+	var localEndpoint string
 	if cfg.LocalBackend != nil {
 		localBackend := *cfg.LocalBackend
 		localBackend.Endpoint = strings.TrimSpace(localBackend.Endpoint)
+		localEndpoint = localBackend.Endpoint
 		options = append(options, PromptKitLocalBackendOption(localBackend))
 	}
 	options = append(options, cfg.EngineOptions...)
@@ -99,6 +102,7 @@ func NewPromptKitClient(cfg PromptKitClientConfig) (*PromptKitClient, error) {
 		recorder:        recorder,
 		profileDir:      strings.TrimSpace(cfg.ProfileDir),
 		profileFile:     strings.TrimSpace(cfg.ProfileFile),
+		localEndpoint:   localEndpoint,
 		reasoningEffort: reasoningEffort,
 	}, nil
 }
@@ -317,7 +321,11 @@ func (c *PromptKitClient) LLMCheckpointFingerprints() ([]CheckpointFingerprint,
 	if err != nil {
 		return nil, err
 	}
-	return []CheckpointFingerprint{fingerprint}, nil
+	fingerprints := []CheckpointFingerprint{fingerprint}
+	if c.localEndpoint != "" {
+		fingerprints = append(fingerprints, promptKitLocalBackendFingerprint(c.localEndpoint))
+	}
+	return fingerprints, nil
 }
 
 func NewLLMProfileRecorder() *LLMProfileRecorder {