Extends the command-row fix to the whole preview: file-change rows were
still leaking raw diff lines into the collapsed line. workEntryPreview
now resolves input-first — command, then touched-file paths, then
detail (which is input for the remaining types: search patterns,
reasoning text, error messages) — so outputs only appear behind the
expander.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>