Overhaul dashboard into command center with compute tracking, era-gated sections

Add compute history time-series (capacity vs demand chart), revenue vs expenses
dual-line chart, enhanced system status (training allocation, network uptime,
model freshness), active operations panel, market position bars, and competitor
snapshot. Stat cards expand from 3 to 6 as player progresses through eras.
Graceful v9→v10 save migration preserves existing games.

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

packages/game-engine/src/systems/computeSystem.ts

@@ -1,5 +1,5 @@
 import type { GameState, ComputeState, InfrastructureState } from '@ai-tycoon/shared';
-import { FLOPS_TO_TOKENS_MULTIPLIER } from '@ai-tycoon/shared';
+import { FLOPS_TO_TOKENS_MULTIPLIER, COMPUTE_SNAPSHOT_INTERVAL, MAX_COMPUTE_HISTORY } from '@ai-tycoon/shared';
 import type { ResearchBonuses } from './researchBonuses';
 
 export interface CapacityResult {
@@ -43,19 +43,36 @@ export function computeCapacity(state: GameState, infrastructure: Infrastructure
   };
 }
 
-export function finalizeCompute(capacity: CapacityResult, totalTokenDemand: number): ComputeState {
+export function finalizeCompute(capacity: CapacityResult, totalTokenDemand: number, prevHistory: ComputeState['computeHistory'], tickCount: number): ComputeState {
   const inferenceUtilization = capacity.tokensPerSecondCapacity > 0
     ? Math.min(1, totalTokenDemand / capacity.tokensPerSecondCapacity)
     : (totalTokenDemand > 0 ? 1 : 0);
 
+  const computeHistory = [...prevHistory];
+  if (tickCount % COMPUTE_SNAPSHOT_INTERVAL === 0) {
+    computeHistory.push({
+      tick: tickCount,
+      totalFlops: capacity.totalFlops,
+      effectiveTrainingFlops: capacity.effectiveTrainingFlops,
+      effectiveInferenceFlops: capacity.effectiveInferenceFlops,
+      inferenceUtilization,
+      tokensPerSecondCapacity: capacity.tokensPerSecondCapacity,
+      tokensPerSecondDemand: totalTokenDemand,
+    });
+    if (computeHistory.length > MAX_COMPUTE_HISTORY) {
+      computeHistory.shift();
+    }
+  }
+
   return {
     ...capacity,
     tokensPerSecondDemand: totalTokenDemand,
     inferenceUtilization,
+    computeHistory,
   };
 }
 
 export function processCompute(state: GameState, infrastructure: InfrastructureState): ComputeState {
   const cap = computeCapacity(state, infrastructure);
-  return finalizeCompute(cap, state.compute.tokensPerSecondDemand);
+  return finalizeCompute(cap, state.compute.tokensPerSecondDemand, state.compute.computeHistory, state.meta.tickCount);
 }