feat(config): add log_conversations option to AI metadata configuration

internal/ai/ollama/client.go

@@ -21,5 +21,6 @@ func New(cfg config.AIConfig, httpClient *http.Client, log *slog.Logger) (*compa
 		HTTPClient:            httpClient,
 		Log:                   log,
 		Dimensions:            cfg.Embeddings.Dimensions,
+		LogConversations:      cfg.Metadata.LogConversations,
 	}), nil
 }