feat(AutoContextMemory): optimize current round msg compress

[shiyiyue1102]

This pull request introduces several enhancements and improvements to the auto-context memory system and file tool capabilities. The most significant changes include adding a new directory listing tool, expanding message classification utilities for tool-related messages, refining prompt templates for message compression, and improving session management and persistence in the advanced example. Additionally, minor test code updates ensure consistency with refactored method names.

File Tool Enhancements

• Added a new list_directory tool to ReadFileTool that lists all files and directories in a specified path, with robust error handling and formatted output. [1] [2]

Auto-Context Memory Utilities

• Introduced utility methods in MsgUtils to classify messages as tool-related, tool use, tool result, and final assistant responses, improving message handling and compression logic.

Prompt and Compression Improvements

• Refined prompt templates in Prompts to support more granular and context-aware message compression for both current round tool messages and large messages, including new format strings and hints for offloaded content. [1] [2]

Session Management and Persistence

• Enhanced the advanced example (AutoMemoryExample.java) to use a persistent session manager with JSON-based session storage, ensuring session state is saved and restored across runs. Also updated auto-context configuration for improved token management. [1] [2] [3] [4] [5]

Test Code Consistency

• Updated test methods to use the new getOriginalMemoryMsgs() method name for accessing original message storage, reflecting recent refactoring. [1] [2] [3] [4] [5]此提交为 AutoContextMemory 添加了新的消息分类方法，并优化了压缩提示文本的格式。新添加的方法用于判断消息是否与工具调用相关，以及是否是最终响应给用户的助手消息。同时更新了压缩提示文本的格式，使其更加详细和易于理解。

Change-Id: I035493bc5ee0322c1584f32dd54ecf3bc9a25ab1
Co-developed-by: Aone Copilot noreply@alibaba-inc.com

AgentScope-Java Version

[The version of AgentScope-Java you are working on, e.g. 1.0.1, check your pom.xml dependency version or run mvn dependency:tree | grep agentscope-parent:pom(only mac/linux)]

Description

[Please describe the background, purpose, changes made, and how to test this PR]

Checklist

Please check the following items before code is ready to be reviewed.

• Code has been formatted with mvn spotless:apply
• All tests are passing (mvn test)
• Javadoc comments are complete and follow project conventions
• Related documentation has been updated (e.g. links, examples, etc.)
• Code is ready for review

[codecov]

Codecov Report

❌ Patch coverage is 55.55556% with 120 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ava/io/agentscope/core/tool/file/ReadFileTool.java	0.00%	59 Missing ⚠️
...ope/core/memory/autocontext/AutoContextMemory.java	74.09%	31 Missing and 19 partials ⚠️
...o/agentscope/core/memory/autocontext/MsgUtils.java	38.88%	4 Missing and 7 partials ⚠️

📢 Thoughts on this report? Let us know!