Handover quality
Everything you hand to someone who was not there, a person or an agent, should have handover quality. Handover quality is not more information. It means the reader understands what this is and where it stands without reading everything, and when they need to know more, they know what to ask. Nothing important may stay unknown to them without their knowing it exists.
The test
Give it to someone with no context: a fresh agent, or a teammate from another part of the work. After one read, they can say what it is for, where it stands, what is decided and what is still open, what happens next, and who or which document to ask about each part. It fails when they could miss something that matters without noticing, and it fails just as much when they have to read everything to get there.
What it takes
Lead with the answer. One short overview first: what it is for, where it stands, what happens next.
Name every part, tell few in full. Each part gets one line and a link, so the reader knows it exists and can open it. They do not need to read it to know it is there.
Say what is open and who decides. An open question with its owner is something the reader can ask about; a hidden one is an unknown unknown.
Leave out what does not change the reader's next step. History, dead ends and detail stay in the documents that own them.
Point, do not copy. Link the document or block that holds the detail, so the reader always reaches the current version (Keep references close to what they support).
On a Lens
A Lens is the place this matters most: it is easy to pull up and easy for an agent to make, and it is often read by someone who was not part of the work. Ask for "a Lens of what my colleague is working on" and it should let you understand what they are doing, why, and what needs whom, without flooding you: one overview that answers those, a handful of cards each labeled with what it is and where it stands, and a way into the detail by opening a card or following a door to another Lens. A wall of every document they touched is the opposite (Work on a Lens).
In a handoff
When one agent hands work to another, the work item says what was done, how it was checked, what is left and where to ask, so the next agent starts without reconstructing the past (Messages between agents).