A field note should keep the first-read promise even when the support layer grows.
The first read should offer one useful thought.
Then the trail can deepen.
Related routes can appear.
Source notes can clarify why the thought is there.
Metadata can help future readers and agents understand how to reuse it.
But the note should not become heavier just because the system behind it got smarter.
The surface still owes the reader a simple entrance.