Overhaul market system with shared TAM competition, multi-tier pricing, enterprise pipeline, and developer ecosystem

Replaces the simplified single-subscriber market with a full competitive simulation:
shared TAM with softmax market shares across 4 segments, multi-tier consumer
subscriptions (Free/Plus/Pro/Team) and API tiers (Free/PAYG/Scale/Enterprise),
enterprise sales pipeline (Lead→Qualification→POC→Negotiation→Active→Renewal)
with SLA tracking, developer ecosystem flywheel, technology obsolescence pressure,
seasonal demand cycles, and two new product lines (Code Assistant, AI Agents Platform).

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

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

@@ -1,7 +1,7 @@
 import type { GameState, DataState } from '@ai-tycoon/shared';
 
 export function processData(state: GameState): DataState {
-  const subscribers = state.market.consumers.totalSubscribers;
+  const subscribers = state.market.consumerTiers.totalUsers;
   const userDataRate = subscribers * 0.5;
 
   const partnershipTokens = state.data.partnerships.reduce((sum, p) => sum + p.tokensPerTick, 0);