style(incremental): shorten a comment run to the cap (improvise-bw4p.4)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VdfEGXA7aJ6ftMsCc9PJze

crates/improvise-incremental/src/harness.rs

@@ -159,10 +159,8 @@ pub fn probes(model: &Model) -> Vec<Probe> {
     asked.order
 }
 
-/// Everything each of `views` draws of `model`: the value of every drawn
-/// cell, every column total, and the occupancy of every drawn cell, row and
-/// column. A view with many None categories is checked as it is drawn, not
-/// as a subset of a stored key (improvise-bw4p.4).
+/// Everything each of `views` draws of `model`: cells, column totals and
+/// occupancy. Why: `context/code/improvise-incremental.md`, step 4 groundwork.
 pub fn drawn_probes(model: &Model, views: &[View]) -> Vec<Probe> {
     views
         .iter()