Remove events system entirely

The random events (GPU shortages, regulatory hearings, PR crises, etc.)
added interruption without enough gameplay value. Removed all event
types, definitions (~1800 lines of event data), the event processor,
EventModal UI, store actions, and tick integration. Updated docs to
reflect the removal. Bundle size drops ~47kB.

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

packages/game-engine/src/tick.ts

@@ -1,4 +1,4 @@
-import type { GameState, EventDefinition, AchievementDefinition } from '@ai-tycoon/shared';
+import type { GameState, AchievementDefinition } from '@ai-tycoon/shared';
 import { processEconomy } from './systems/economySystem';
 import { processInfrastructure } from './systems/infrastructureSystem';
 import { processCompute } from './systems/computeSystem';
@@ -7,7 +7,6 @@ import { processModels } from './systems/modelSystem';
 import { processMarket } from './systems/marketSystem';
 import { processReputation } from './systems/reputationSystem';
 import { processTalent } from './systems/talentSystem';
-import { processEvents } from './systems/eventSystem';
 import { processCompetitors } from './systems/competitorSystem';
 import { processData } from './systems/dataSystem';
 import { checkEraTransition } from './systems/eraSystem';
@@ -25,13 +24,8 @@ export interface TickNotification {
   type: 'info' | 'success' | 'warning' | 'danger';
 }
 
-let cachedEventDefs: EventDefinition[] | null = null;
 let cachedAchievementDefs: AchievementDefinition[] | null = null;
 
-export function setEventDefinitions(defs: EventDefinition[]) {
-  cachedEventDefs = defs;
-}
-
 export function setAchievementDefinitions(defs: AchievementDefinition[]) {
   cachedAchievementDefs = defs;
 }
@@ -88,18 +82,6 @@ export function processTick(state: GameState): Partial<GameState> {
   const data = processData(stateWithTalent);
   const competitors = processCompetitors(stateWithTalent);
 
-  const eventResult = cachedEventDefs
-    ? processEvents(stateWithTalent, cachedEventDefs)
-    : { events: state.events, newEvents: [] };
-
-  for (const evt of eventResult.newEvents) {
-    notifications.push({
-      title: evt.title,
-      message: evt.description,
-      type: evt.category === 'regulatory' ? 'warning' : 'info',
-    });
-  }
-
   const tickCount = state.meta.tickCount + 1;
 
   let meta = {
@@ -137,7 +119,6 @@ export function processTick(state: GameState): Partial<GameState> {
     reputation,
     data,
     competitors,
-    events: eventResult.events,
     achievements: state.achievements,
   };
 
@@ -165,7 +146,6 @@ export function processTick(state: GameState): Partial<GameState> {
     reputation,
     data,
     competitors,
-    events: eventResult.events,
     achievements: achievementResult.achievements,
   };