The instruction telling subagents not to write report/summary/analysis files has been clarified to note that writing files as input to another tool is acceptable.
Details
Old: "Do NOT write report/summary/findings/analysis .md files. Return findings directly..."
New: "...Return findings directly... (Files written as input to another tool are fine; this note is about report files.)"
Evidence
Prompt text change (search for "Files written as input to another tool are fine")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.