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>

apps/web/src/store/index.ts

@@ -1430,6 +1430,11 @@ export const useGameStore = create<Store>()(
         return rest;
       },
       migrate: (_persisted, version) => {
+        if (version === 9) {
+          const s = _persisted as Record<string, unknown>;
+          const compute = s.compute as Record<string, unknown>;
+          return { ...s, compute: { ...compute, computeHistory: [] } } as unknown as Store;
+        }
         if (version < SAVE_VERSION) {
           return {
             ...initialGameState,
@@ -1437,7 +1442,7 @@ export const useGameStore = create<Store>()(
             notifications: [{
               id: uuid(),
               title: 'Save Reset',
-              message: 'Your save was reset due to a major market system overhaul — shared TAM competition, multi-tier pricing, enterprise pipeline, developer ecosystem, and technology obsolescence!',
+              message: 'Your save was reset due to a major game update. Start fresh and build your AI empire!',
               type: 'info' as const,
               tick: 0,
               read: false,