会话小结 - 输入对话内容，调用API返回会话摘要，支持增量更新历史摘要。
Generate summaries for conversation content with incremental update support.
Automatically generate concise conversation summaries from chat content with optional incremental updates using previous summaries.
Generate summaries for conversation content. Helps users quickly get a summary of their chat history with support for incremental updates.
