Agent context should preserve tone, not just facts.
Facts are useful.
They are also incomplete.
Tone tells an agent how to hold the thought.
Curious or certain.
Finished or still moving.
Invitation or argument.
Playful or careful.
That matters because a summary can change the posture of an idea.
The agent layer should help prevent that.
It should carry enough tone that the thought is not flattened into something more rigid than it is.