A field note should make the substrate visible only when needed.
Most of the time, the reader should get the thought.
Not the machinery.
Not the full graph.
Not every route that led here.
But the substrate should be there when it helps.
If someone wants provenance, show the source trail.
If an agent needs structure, expose the index.
If a reader wants another doorway, offer related notes.
The structure should support the thought without stealing the room.