Add a read-only estimated resolution date line at the top of each
noncompliant metric's section in the asset sidebar, sourced from that
metric's own resolution_date. Formats valid dates as YYYY-MM-DD and
shows placeholders for unset and invalid dates. Resolved metrics are
unaffected and the existing editable Resolution Date field is unchanged.
Date classification is isolated in a pure helper (frontend/src/utils/
resolutionDate.js) covered by example and fast-check property tests,
with render and interaction tests for the sidebar.
Closes#20
