Rename AI Tycoon to Token Empire across entire codebase

Full rebrand: UI display text, package scope (@ai-tycoon/* -> @token-empire/*),
localStorage keys, Docker/CI image paths, database names, and documentation.

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

apps/web/src/pages/InfrastructurePage.tsx

@@ -18,11 +18,11 @@ import {
   SWITCH_TIER_CONFIGS,
   DC_UPGRADE_COST_FRACTION, DC_UPGRADE_INCREMENT,
   skuTotalFlops,
-} from '@ai-tycoon/shared';
+} from '@token-empire/shared';
 import type {
   DCTier, RackSkuId, LocationId, PipelineStage, Era,
   Cluster, Campus, DataCenter, DeploymentCohort,
-} from '@ai-tycoon/shared';
+} from '@token-empire/shared';
 
 const ERA_ORDER: Era[] = ['startup', 'scaleup', 'bigtech', 'agi'];