user.getDefaultDashboard returns the highest-priority role for which the
user has actionable work right now — pending eval in active round, active
mentoring assignment, applicant project in active round, etc. — falling
back to static priority order if nothing is actionable.
src/app/page.tsx now reads roles[] (multi-role array) instead of just the
primary role, fixing the bug where mentor+juror users always landed on
their primary role's dashboard. Uses static priority for simplicity in
the server component; the context-aware procedure remains available for
client surfaces.
Tests cover six cases: super-admin, juror with active eval, juror+observer
fallback, mentor+juror in mentoring round, both-active-priority-tiebreak,
observer-only.
Plan: docs/superpowers/plans/2026-04-28-pr6-multi-role-and-workspace-previews.md