AI Engineering/Phase 14/Lesson 34

Repo Memory and Durable State

Chat history is volatile. The repo is durable. The workbench stores agent state in versioned files so the next session, the next agent, and the next reviewer all read from the same source of truth.

Build 1 hr Python (stdlib + `jsonschema` optional)

Prerequisites: Phase 14 · 32 (Minimal Workbench)

#Learning Objectives

Define what belongs in repo memory and what belongs in chat history.
Author JSON Schemas for agent_state.json and task_board.json.
Build a state manager that loads, validates, mutates, and persists state atomically.
Use the schema to refuse bad writes before they corrupt the workbench.

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The text and code of this lesson are based on AI Engineering from Scratch by Rohit Ghumare, MIT licensed.