Harness engineering
The map I wish I'd had
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- Eyelock
- Technology , Off the model
- July 20, 2026
Kickoff Eleven months. Seven repositories. Four abandoned projects. One rename that mattered. This is the last post of the series, so here's the whole journey on one page — and the map I wish
Recap: Act III — Naming the Thing
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- Technology , Off the model
- July 20, 2026
Act III is where the series earns its title. February to May 2026, recapped — before the story finally walks into the office.**[The weekend rebuild](/off-the-model/08-the
Package the environment, not the prompt
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- Eyelock
- Technology , Off the model
- July 20, 2026
Kickoff Eleven days. That's how long it took after April's persona→harness rename for the idea to jump products. April 6th: ynh renames its whole world around harnesses. April 17th: my IDE gr
The day my project renamed itself
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- Technology , Off the model
- July 20, 2026
Kickoffrefactor: rename persona → harness across entire codebase**There's a commit in my history dated the 6th of April 2026 that I'd frame and hang on the wall, if you could do that with
December 2025: the month the bottleneck moved
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- Technology , Off the model
- July 20, 2026
Kickoff The new models didn't make my prompts better. They made my prompts irrelevant. When Anthropic's new Sonnet and Opus models landed in December 2025, something qualitative shifted. For
In August 2025 I was shouting at an LLM in all-caps
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- Technology , Off the model
- July 20, 2026
KickoffMANDATORY: You MUST work ONLY in the specified working directory. NO EXCEPTIONS.That is Clause 27 of a legal code with a jurisdiction of one machine and no court of appeal. I wrot