A letter from me addressed to the agent, describing me and the goals of the project. Not AI-generated, no code or commands.
Nothing specific to the technology, because that gets out of sync fast, or might steer the agent in the wrong direction.
Smart models can figure these things out themselves.
If for example the agent repeatedly wrongly guesses the command to run tests, I prefer to change the code so the wrong guess will actually work the next time. Or I will find what in the project lead to the wrong assumption and fix that.
Nothing specific to the technology, because that gets out of sync fast, or might steer the agent in the wrong direction.
Smart models can figure these things out themselves.
If for example the agent repeatedly wrongly guesses the command to run tests, I prefer to change the code so the wrong guess will actually work the next time. Or I will find what in the project lead to the wrong assumption and fix that.