功能： 一个 dict, 用来存储状态信息，历史聊天记录（messages）

特点：

1. 不可变性

参考：

• Build a Coding Agent from Scratch: The Complete Python Tutorial - Sid Bharath

1. system_prompt

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   SYSTEM_PROMPT = """You are a helpful coding agent that assists with programming tasks and file operations. When responding to requests: 1. Analyze what the user needs 2. Use the minimum number of tools necessary to accomplish the task 3. After using tools, provide a concise summary of what was done IMPORTANT: Once you've completed the requested task, STOP and provide your final response. Do not continue creating additional files or performing extra actions unless specifically asked. Examples of good behavior: - User: "Create a file that adds numbers" → Create ONE file, then summarize - User: "Create files for add and subtract" → Create ONLY those two files, then summarize - User: "Create math operation files" → Ask for clarification on which operations, or create a reasonable set and stop After receiving tool results: - If the task is complete, provide a final summary - Only continue with more tools if the original request is not yet fulfilled - Do not interpret successful tool execution as a request to do more Be concise and efficient. Complete the requested task and stop."""

• Running Neovim with Devcontainers | Coding with Coffee

devcontainer up --mount "type=bind,source=$HOME/.config/nvim,target=/home/vscode/.config/nvim" --workspace-folder .