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Hands-OnHarness Engineering

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Lectures

Lecture 01 — Why Capable Agents Still Fail

Code Companion

Lecture 02 — What a Harness Actually Is

Code Companion

Lecture 03 — Repo as System of Record

Code Companion

Lecture 04 — Why One Giant Instruction File Fails

Code Companion

Lecture 05 — Why Long-Running Tasks Lose Continuity

Code Companion

Lecture 06 — Why Initialization Needs Its Own Phase

Code Companion

Lecture 07 — Why Agents Overreach and Under-Finish

Code Companion

Lecture 08 — Feature Lists as Harness Primitives

Code Companion

Lecture 09 — Why Agents Declare Victory Too Early

Code Companion

Lecture 10 — Why E2E Testing Changes Results

Code Companion

Lecture 11 — Observability Inside the Harness

Code Companion

Lecture 12 — Why Every Session Must Leave Clean State

Code Companion

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Code for Lecture 04

Use this folder for examples of:

monolithic instruction files
short entrypoints
progressive disclosure patterns

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Lectures Source: walkinglabs/learn-harness-engineering