Add Week 3 polish and late-game features

VC funding system (seed through IPO with requirements gating), 15
achievements with engine checker, model tuning presets and unlockable
sliders, overload policy controls, open-source mechanic with reputation
boost, enhanced Recharts analytics (subscriber/reputation/revenue vs
expenses charts), M&A acquisition system, sidebar NEW badges on era
transitions, tutorial hints, and wired-up settings toggles.

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

packages/shared/src/constants/gameBalance.ts

@@ -40,3 +40,16 @@ export const ERA_THRESHOLDS = {
 export const GPU_PRICE_VOLATILITY = 0.02;
 export const GPU_FAILURE_RATE_BASE = 0.0001;
 export const REDUNDANCY_FAILURE_REDUCTION = 0.5;
+
+export const FUNDING_ROUNDS = {
+  seed: { amount: 100_000, dilution: 0.10, requirements: { minRevenue: 100, minUsers: 0, minReputation: 0 } },
+  seriesA: { amount: 500_000, dilution: 0.15, requirements: { minRevenue: 500, minUsers: 100, minReputation: 20 } },
+  seriesB: { amount: 2_000_000, dilution: 0.12, requirements: { minRevenue: 5_000, minUsers: 1_000, minReputation: 30 } },
+  seriesC: { amount: 10_000_000, dilution: 0.10, requirements: { minRevenue: 50_000, minUsers: 10_000, minReputation: 40 } },
+  seriesD: { amount: 50_000_000, dilution: 0.08, requirements: { minRevenue: 500_000, minUsers: 50_000, minReputation: 50 } },
+  ipo: { amount: 200_000_000, dilution: 0.20, requirements: { minRevenue: 5_000_000, minUsers: 100_000, minReputation: 60 } },
+} as const;
+
+export const OPEN_SOURCE_REPUTATION_BOOST = 8;
+export const OPEN_SOURCE_TALENT_ATTRACTION = 0.15;
+export const OPEN_SOURCE_REVENUE_PENALTY = 0.10;

packages/shared/src/types/market.ts

@@ -3,6 +3,7 @@ export interface MarketState {
   enterprise: EnterpriseMarket;
   overloadPolicy: OverloadPolicy;
   openSourcedModels: string[];
+  subscriberHistory: { tick: number; subscribers: number }[];
 }
 
 export interface ConsumerMarket {
@@ -70,4 +71,5 @@ export const INITIAL_MARKET: MarketState = {
     prioritizeEnterprise: true,
   },
   openSourcedModels: [],
+  subscriberHistory: [],
 };