Add research money costs, longer research times, era-scaled talent costs, and persona strategy

Research now costs money (drained per-tick) with ~2.5-3.5x longer durations by category.
Early-game talent budget costs reduced via era multiplier (startup 0.2x → bigtech 1.0x).
New seed-driven PersonaStrategy with 8 axes of variation for meaningful multi-run testing.
CI multi-run switched from greedy to persona strategy.

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

apps/web/src/pages/ResearchPage.tsx

@@ -1,7 +1,7 @@
 import { FlaskConical, Lock, Check, Play, ListOrdered, X } from 'lucide-react';
 import { TutorialHint } from '@/components/game/TutorialHint';
 import { useGameStore } from '@/store';
-import { formatDuration, formatPercent, formatNumber } from '@ai-tycoon/shared';
+import { formatDuration, formatPercent, formatNumber, formatMoney } from '@ai-tycoon/shared';
 import { TECH_TREE, getAvailableResearch } from '@ai-tycoon/game-engine';
 import type { ResearchNode } from '@ai-tycoon/shared';
 
@@ -44,6 +44,7 @@ export function ResearchPage() {
       totalTicks: node.cost.ticks,
       allocatedResearchers: state.talent.departments.research.headcount,
       allocatedCompute: node.cost.compute,
+      moneySpent: 0,
     });
   };
 
@@ -165,7 +166,7 @@ export function ResearchPage() {
                     <p className="text-xs text-surface-400 mb-3">{node.description}</p>
                     <div className="flex items-center justify-between">
                       <div className="text-xs text-surface-500">
-                        {formatDuration(node.cost.ticks)} · {formatNumber(node.cost.compute)} compute
+                        {formatMoney(node.cost.money)} · {formatDuration(node.cost.ticks)} · {formatNumber(node.cost.compute)} compute
                         {node.cost.researchPoints > 0 && ` · ${node.cost.researchPoints} RP`}
                       </div>
                       {canStart && (