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>

apps/web/src/components/layout/MainLayout.tsx

@@ -1,7 +1,6 @@
 import { Sidebar } from './Sidebar';
 import { TopBar } from './TopBar';
 import { ToastContainer } from '@/components/common/ToastContainer';
-import { EventModal } from '@/components/game/EventModal';
 import { useGameStore } from '@/store';
 import { DashboardPage } from '@/pages/DashboardPage';
 import { InfrastructurePage } from '@/pages/InfrastructurePage';
@@ -29,7 +28,6 @@ export function MainLayout() {
         </main>
       </div>
       <ToastContainer />
-      <EventModal />
     </div>
   );
 }