Redesign infrastructure to hypercluster scale with 4-level hierarchy

Replace flat DataCenter/Rack model with Cluster > Campus > Data Center > Racks
hierarchy. Individual rack entities eliminated in favor of statistical batch
simulation using deployment cohorts. Adds tiered network topology (ToR/agg/core)
with proportional outage model, DC retrofitting, bulk operations, and drill-down
UI navigation with breadcrumbs. First cluster and campus are free to preserve
early game flow. Rebalances starting economy ($600K), funding rounds, and
cohort scaling for hypercluster-scale gameplay.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/components/game/CompanyStatsCard.tsx

@@ -19,7 +19,7 @@ export function CompanyStatsCard({ onClose }: { onClose: () => void }) {
   );
   const reputation = useGameStore((s) => s.reputation.score);
   const achievements = useGameStore((s) => s.achievements.unlocked.length);
-  const dataCenters = useGameStore((s) => s.infrastructure.dataCenters.length);
+  const dataCenters = useGameStore((s) => s.infrastructure.totalDataCenterCount);
   const totalRacks = useGameStore((s) => s.infrastructure.totalRackCount);
 
   const eraLabel = era === 'startup' ? 'Startup' : era === 'scaleup' ? 'Scale-up' : era === 'bigtech' ? 'Big Tech' : 'AGI';