Replaces the EntityRow table with the spec §7.1 hero-stat card grid:
full-width cards on <1024px, 2-up on lg+, 16px gap. Each card uses
the new ProjectCard component (72px Inter Black volt hero, status
dot, progress bar, sub-line, footer).
Adds the spec's empty state — full-bleed 96px Inter Black volt
"NO PROJECTS YET" with a forest-green "⊕ START YOUR FIRST PROJECT"
CTA. The regular top-right "⊕ NEW PROJECT" CTA is also forest-green.
Both CTAs wire to the existing openNewProject dialog.
Data gaps: the card passes progress=null, phase=null, nextGateName=
null, costBurnedCents=null because the shared Project type doesn't
carry those fields yet. ProjectCard renders em-dash placeholders
gracefully. Status is mapped from the existing ProjectStatus enum
(paused → waiting, active/running → working, else idle).
Also fixes an unrelated test fixture that used the stale "active"
ProjectStatus literal which tsc rejects.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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