`platform` was missing from the traceability scanner's source roots, so
every TRACES tag in `dr-plat` — the secret store, volume discovery, and
now display-profile acquisition — was invisible to the matrix. The
FR-PLAT-* family is exactly what that crate exists to satisfy, so the
omission understated coverage by the requirements it was meant to
count.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>