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/data/techTree.ts

@@ -379,6 +379,60 @@ export const TECH_TREE: ResearchNode[] = [
     ],
   },
 
+  // === MARKET / PRODUCTS ===
+  {
+    id: 'code-assistant-product',
+    name: 'Code Assistant Product',
+    description: 'Launch an AI code assistant product for developers. Requires Code Generation research.',
+    era: 'scaleup',
+    category: 'specialization',
+    branch: 'coding',
+    prerequisites: ['code-generation'],
+    cost: { researchPoints: 2, compute: 20, ticks: 150 },
+    effects: [{ type: 'unlock_product_line', target: 'code-assistant', value: 1 }],
+  },
+  {
+    id: 'developer-relations',
+    name: 'Developer Relations',
+    description: 'Invest in developer community building. Unlocks dev-rel budget allocation and boosts API adoption.',
+    era: 'startup',
+    category: 'efficiency',
+    prerequisites: [],
+    cost: { researchPoints: 0, compute: 3, ticks: 45 },
+    effects: [{ type: 'unlock_feature', target: 'developer-relations', value: 1 }],
+  },
+  {
+    id: 'enterprise-sales',
+    name: 'Enterprise Sales',
+    description: 'Build a formal enterprise sales pipeline. Unlocks enterprise lead generation and contract management.',
+    era: 'startup',
+    category: 'efficiency',
+    prerequisites: [],
+    cost: { researchPoints: 0, compute: 3, ticks: 45 },
+    effects: [{ type: 'unlock_feature', target: 'enterprise-sales', value: 1 }],
+  },
+  {
+    id: 'sdk-platform',
+    name: 'SDK Platform',
+    description: 'Comprehensive SDK and tooling platform. Significantly boosts developer ecosystem growth.',
+    era: 'scaleup',
+    category: 'efficiency',
+    prerequisites: ['developer-relations'],
+    cost: { researchPoints: 2, compute: 15, ticks: 120 },
+    effects: [{ type: 'efficiency_boost', target: 'sdk_coverage', value: 0.3 }],
+  },
+  {
+    id: 'agents-platform-product',
+    name: 'Agents Platform Product',
+    description: 'Launch an enterprise AI agents platform. Requires Agentic Architecture research.',
+    era: 'bigtech',
+    category: 'specialization',
+    branch: 'agents',
+    prerequisites: ['agentic-architecture'],
+    cost: { researchPoints: 4, compute: 60, ticks: 300 },
+    effects: [{ type: 'unlock_product_line', target: 'agents-platform', value: 1 }],
+  },
+
   // === DATA ===
   {
     id: 'data-pipeline',