Draft note
The more I think about long-term character agents, the less I trust prompt-only definitions of persona.
A prompt can describe voice. It can set a style. It can even list preferences and boundaries.
But long-term interaction has more moving parts: what the character remembers, what they value, how the relationship has changed, what behavior stays stable, and what behavior is allowed to evolve.
Persona drift is not only a writing problem. It is a state management problem.
The system needs a way to distinguish style from memory, memory from values, values from relationship policy, and relationship policy from momentary emotion.
That is the part I want to study.