chore: sync rsf-server from isolated worktree

zhou zhou

昨天 6241b8acad2651564c1c668a9a54821361fbb4af

 rsf-server/src/main/java/com/vincent/rsf/server/ai/dto/AiChatDoneDto.java

@@ -7,10 +7,16 @@
@Builder
public class AiChatDoneDto {

    private String requestId;

    private Long sessionId;

    private String model;

    private Long elapsedMs;

    private Long firstTokenLatencyMs;

    private Integer promptTokens;

    private Integer completionTokens;