fix bugs in memory

[vinci-grape]

Change Summary

1. Fix bugs in the memory module.
2. Modify the read_file logic in FileSystemTool to support reading multiple files.

Related issue number

Checklist

• The pull request title is a good summary of the changes - it will be used in the changelog
• Unit tests for the changes exist
• Run pre-commit install and pre-commit run --all-files before git commit, and passed lint check.
• Documentation reflects the changes where applicable

[gemini-code-assist]

Summary of Changes

Hello @vinci-grape, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request primarily focuses on improving the robustness and functionality of the agent's memory management and file system interaction. It addresses specific configuration handling within the memory module to ensure correct LLM integration and significantly enhances the read_file tool to allow for batch processing of file contents, streamlining operations that require accessing multiple files.

Highlights

• Memory Configuration Refinement: The memory module's LLM configuration now correctly uses summary_model and max_tokens from the memory object, ensuring proper setup for memory-related LLM operations.
• Enhanced File Reading Capability: The FileSystemTool's read_file function has been upgraded to support reading content from multiple files simultaneously, returning a dictionary of results.
• Memory Save Clarification: A comment in the main agent loop was updated to explicitly mention saving both memory and history, reflecting the existing save_memory call.

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[gemini-code-assist]

Code Review

This pull request introduces some good fixes and enhancements. The changes in the memory module correctly associate summary_model and max_tokens with the memory's own configuration, and move the max_tokens setting to the correct LLM configuration block, which is a good bug fix. The update to FileSystemTool to allow reading multiple files is a useful feature. I've left one comment regarding the return format of the read_file function to ensure the output is more robustly parsable by the LLM.

[gemini-code-assist]

The function returns a string representation of a Python dictionary (str(results)), which is not valid JSON and can be hard for the LLM to parse reliably. It's better to return a standard JSON string. This also makes the implementation align better with the docstring which states it returns a dictionary (by returning its JSON representation).

Note: You will need to add import json at the top of the file to use json.dumps.

Suggested change

	return str(results)
	return json.dumps(results)