wip

apps/companion/main/di-config.ts

@@ -255,7 +255,18 @@ export function configureDIContainer(): void {
   }
 
   // Overlay Sync Service - create singleton instance directly
-  const lifecycleEmitter = browserAutomation as unknown as IAutomationLifecycleEmitter;
+  const lifecycleEmitter: IAutomationLifecycleEmitter = {
+    onLifecycle: (cb) => {
+      if ('onLifecycle' in browserAutomation && typeof (browserAutomation as { onLifecycle?: unknown }).onLifecycle === 'function') {
+        (browserAutomation as IAutomationLifecycleEmitter).onLifecycle(cb);
+      }
+    },
+    offLifecycle: (cb) => {
+      if ('offLifecycle' in browserAutomation && typeof (browserAutomation as { offLifecycle?: unknown }).offLifecycle === 'function') {
+        (browserAutomation as IAutomationLifecycleEmitter).offLifecycle(cb);
+      }
+    },
+  };
   const publisher = {
     publish: async (event: unknown) => {
       try {

apps/companion/main/ipc-handlers.ts

@@ -374,9 +374,10 @@ export function setupIpcHandlers(mainWindow: BrowserWindow): void {
   // Subscribe to automation adapter lifecycle events and relay to renderer
   try {
     if (!lifecycleSubscribed) {
-      const lifecycleEmitter = container.getBrowserAutomation() as unknown as IAutomationLifecycleEmitter;
+      const browserAutomation = container.getBrowserAutomation();
-      if (typeof lifecycleEmitter.onLifecycle === 'function') {
+      const candidate = browserAutomation as Partial<IAutomationLifecycleEmitter>;
-        lifecycleEmitter.onLifecycle((ev) => {
+      if (typeof candidate.onLifecycle === 'function' && typeof candidate.offLifecycle === 'function') {
+        candidate.onLifecycle((ev) => {
           try {
             if (mainWindow && mainWindow.webContents) {
               mainWindow.webContents.send('automation-event', ev);
@@ -388,6 +389,8 @@ export function setupIpcHandlers(mainWindow: BrowserWindow): void {
         });
         lifecycleSubscribed = true;
         logger.debug('Subscribed to adapter lifecycle events for renderer relay');
+      } else {
+        logger.debug?.('Browser automation does not expose lifecycle events; skipping subscription');
       }
     }
   } catch (e) {

apps/companion/main/preload.ts

@@ -31,12 +31,16 @@ export interface CheckoutConfirmationRequest {
   timeoutMs: number;
 }
 
+export interface StartAutomationResponse {
+  success: boolean;
+  sessionId?: string;
+  error?: string;
+  authRequired?: boolean;
+  authState?: AuthenticationState;
+}
+
 export interface ElectronAPI {
-  startAutomation: (config: HostedSessionConfig) => Promise<{
+  startAutomation: (config: HostedSessionConfig) => Promise<StartAutomationResponse>;
-    success: boolean;
-    sessionId?: string;
-    error?: string;
-  }>;
   stopAutomation: (sessionId: string) => Promise<{ success: boolean; error?: string }>;
   getSessionStatus: (sessionId: string) => Promise<any>;
   pauseAutomation: (sessionId: string) => Promise<{ success: boolean; error?: string }>;
@@ -60,7 +64,8 @@ export interface ElectronAPI {
 }
 
 contextBridge.exposeInMainWorld('electronAPI', {
-  startAutomation: (config: HostedSessionConfig) => ipcRenderer.invoke('start-automation', config),
+  startAutomation: (config: HostedSessionConfig) =>
+    ipcRenderer.invoke('start-automation', config) as Promise<StartAutomationResponse>,
   stopAutomation: (sessionId: string) => ipcRenderer.invoke('stop-automation', sessionId),
   getSessionStatus: (sessionId: string) => ipcRenderer.invoke('get-session-status', sessionId),
   pauseAutomation: (sessionId: string) => ipcRenderer.invoke('pause-automation', sessionId),

apps/companion/renderer/App.tsx

@@ -6,6 +6,8 @@ import { BrowserModeToggle } from './components/BrowserModeToggle';
 import { CheckoutConfirmationDialog } from './components/CheckoutConfirmationDialog';
 import { RaceCreationSuccessScreen } from './components/RaceCreationSuccessScreen';
 import type { HostedSessionConfig } from '../../../packages/automation/domain/types/HostedSessionConfig';
+import type { AuthenticationState } from '../../../packages/automation/domain/value-objects/AuthenticationState';
+import type { StartAutomationResponse } from '../main/preload';
 
 interface SessionProgress {
   sessionId: string;
@@ -16,7 +18,7 @@ interface SessionProgress {
   errorMessage: string | null;
 }
 
-type AuthState = 'UNKNOWN' | 'AUTHENTICATED' | 'EXPIRED' | 'LOGGED_OUT' | 'CHECKING';
+type AuthState = AuthenticationState | 'CHECKING';
 type LoginStatus = 'idle' | 'waiting' | 'success' | 'error';
 
 export function App() {
@@ -84,7 +86,7 @@ export function App() {
     try {
       const result = await window.electronAPI.checkAuth();
       if (result.success && result.state) {
-        setAuthState(result.state as AuthState);
+        setAuthState(result.state);
       } else {
         setAuthError(result.error);
         setAuthState('UNKNOWN');
@@ -103,7 +105,7 @@ export function App() {
       try {
         const result = await window.electronAPI.checkAuth();
         if (result.success && result.state) {
-          setAuthState(result.state as AuthState);
+          setAuthState(result.state);
         } else {
           setAuthError(result.error || 'Failed to check authentication');
           setAuthState('UNKNOWN');
@@ -138,13 +140,7 @@ export function App() {
 
   const handleStartAutomation = async (config: HostedSessionConfig) => {
     setIsRunning(true);
-    const result = await window.electronAPI.startAutomation(config) as {
+    const result: StartAutomationResponse = await window.electronAPI.startAutomation(config);
-      success: boolean;
-      sessionId?: string;
-      error?: string;
-      authRequired?: boolean;
-      authState?: AuthState;
-    };
     
     if (result.success && result.sessionId) {
       setSessionId(result.sessionId);
@@ -153,8 +149,8 @@ export function App() {
 
     setIsRunning(false);
 
-    if ('authRequired' in result && result.authRequired) {
+    if (result.authRequired) {
-      const nextAuthState = result.authState as AuthState | undefined;
+      const nextAuthState = result.authState;
       setAuthState(nextAuthState ?? 'EXPIRED');
       setAuthError(result.error ?? 'Authentication required before starting automation.');
       return;

apps/website/app/api/sponsors/dashboard/route.ts

@@ -19,7 +19,7 @@ export async function GET(request: NextRequest) {
 
     const presenter = new SponsorDashboardPresenter();
     const useCase = getGetSponsorDashboardUseCase();
-    await useCase.execute({ sponsorId });
+    await useCase.execute({ sponsorId }, presenter);
     const dashboard = presenter.getData();
 
     if (!dashboard) {

apps/website/app/api/sponsors/sponsorships/route.ts

@@ -19,7 +19,7 @@ export async function GET(request: NextRequest) {
 
     const presenter = new SponsorSponsorshipsPresenter();
     const useCase = getGetSponsorSponsorshipsUseCase();
-    await useCase.execute({ sponsorId });
+    await useCase.execute({ sponsorId }, presenter);
     const sponsorships = presenter.getData();
 
     if (!sponsorships) {

apps/website/app/auth/login/page.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { useState, FormEvent } from 'react';
+import { useState, FormEvent, type ChangeEvent } from 'react';
 import { useRouter, useSearchParams } from 'next/navigation';
 import Link from 'next/link';
 import {
@@ -145,7 +145,7 @@ export default function LoginPage() {
                   id="email"
                   type="email"
                   value={formData.email}
-                  onChange={(e) => setFormData({ ...formData, email: e.target.value })}
+                  onChange={(e: ChangeEvent<HTMLInputElement>) => setFormData({ ...formData, email: e.target.value })}
                   error={!!errors.email}
                   errorMessage={errors.email}
                   placeholder="you@example.com"
@@ -172,7 +172,7 @@ export default function LoginPage() {
                   id="password"
                   type={showPassword ? 'text' : 'password'}
                   value={formData.password}
-                  onChange={(e) => setFormData({ ...formData, password: e.target.value })}
+                  onChange={(e: ChangeEvent<HTMLInputElement>) => setFormData({ ...formData, password: e.target.value })}
                   error={!!errors.password}
                   errorMessage={errors.password}
                   placeholder="••••••••"

apps/website/app/auth/signup/page.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { useState, useEffect, FormEvent } from 'react';
+import { useState, useEffect, FormEvent, type ChangeEvent } from 'react';
 import { useRouter, useSearchParams } from 'next/navigation';
 import Link from 'next/link';
 import {
@@ -226,7 +226,7 @@ export default function SignupPage() {
                   id="displayName"
                   type="text"
                   value={formData.displayName}
-                  onChange={(e) => setFormData({ ...formData, displayName: e.target.value })}
+                  onChange={(e: ChangeEvent<HTMLInputElement>) => setFormData({ ...formData, displayName: e.target.value })}
                   error={!!errors.displayName}
                   errorMessage={errors.displayName}
                   placeholder="SpeedyRacer42"
@@ -249,7 +249,7 @@ export default function SignupPage() {
                   id="email"
                   type="email"
                   value={formData.email}
-                  onChange={(e) => setFormData({ ...formData, email: e.target.value })}
+                  onChange={(e: ChangeEvent<HTMLInputElement>) => setFormData({ ...formData, email: e.target.value })}
                   error={!!errors.email}
                   errorMessage={errors.email}
                   placeholder="you@example.com"
@@ -271,7 +271,7 @@ export default function SignupPage() {
                   id="password"
                   type={showPassword ? 'text' : 'password'}
                   value={formData.password}
-                  onChange={(e) => setFormData({ ...formData, password: e.target.value })}
+                  onChange={(e: ChangeEvent<HTMLInputElement>) => setFormData({ ...formData, password: e.target.value })}
                   error={!!errors.password}
                   errorMessage={errors.password}
                   placeholder="••••••••"
@@ -336,7 +336,7 @@ export default function SignupPage() {
                   id="confirmPassword"
                   type={showConfirmPassword ? 'text' : 'password'}
                   value={formData.confirmPassword}
-                  onChange={(e) => setFormData({ ...formData, confirmPassword: e.target.value })}
+                  onChange={(e: ChangeEvent<HTMLInputElement>) => setFormData({ ...formData, confirmPassword: e.target.value })}
                   error={!!errors.confirmPassword}
                   errorMessage={errors.confirmPassword}
                   placeholder="••••••••"

apps/website/app/dashboard/page.tsx

@@ -27,6 +27,7 @@ import Card from '@/components/ui/Card';
 import Button from '@/components/ui/Button';
 import { getAuthService } from '@/lib/auth';
 import { getGetDashboardOverviewUseCase } from '@/lib/di-container';
+import { DashboardOverviewPresenter } from '@/lib/presenters/DashboardOverviewPresenter';
 import type {
   DashboardOverviewViewModel,
   DashboardFeedItemSummaryViewModel,
@@ -94,8 +95,9 @@ export default async function DashboardPage() {
   const currentDriverId = session.user.primaryDriverId ?? '';
 
   const useCase = getGetDashboardOverviewUseCase();
-  await useCase.execute({ driverId: currentDriverId });
+  const presenter = new DashboardOverviewPresenter();
-  const viewModel = useCase.presenter.getViewModel() as DashboardOverviewViewModel | null;
+  await useCase.execute({ driverId: currentDriverId }, presenter);
+  const viewModel = presenter.getViewModel();
 
   if (!viewModel) {
     return null;

apps/website/app/drivers/page.tsx

@@ -28,6 +28,7 @@ import Input from '@/components/ui/Input';
 import Card from '@/components/ui/Card';
 import Heading from '@/components/ui/Heading';
 import { getGetDriversLeaderboardUseCase } from '@/lib/di-container';
+import { DriversLeaderboardPresenter } from '@/lib/presenters/DriversLeaderboardPresenter';
 import type { DriverLeaderboardItemViewModel, SkillLevel } from '@gridpilot/racing/application/presenters/IDriversLeaderboardPresenter';
 import Image from 'next/image';
 
@@ -387,13 +388,16 @@ export default function DriversPage() {
   useEffect(() => {
     const load = async () => {
       const useCase = getGetDriversLeaderboardUseCase();
-      await useCase.execute();
+      const presenter = new DriversLeaderboardPresenter();
-      const viewModel = useCase.presenter.getViewModel();
+      await useCase.execute(undefined as void, presenter);
+      const viewModel = presenter.getViewModel();
 
-      setDrivers(viewModel.drivers);
+      if (viewModel) {
-      setTotalRaces(viewModel.totalRaces);
+        setDrivers(viewModel.drivers);
-      setTotalWins(viewModel.totalWins);
+        setTotalRaces(viewModel.totalRaces);
-      setActiveCount(viewModel.activeCount);
+        setTotalWins(viewModel.totalWins);
+        setActiveCount(viewModel.activeCount);
+      }
       setLoading(false);
     };
 

apps/website/app/leaderboards/drivers/page.tsx

@@ -20,6 +20,7 @@ import Button from '@/components/ui/Button';
 import Input from '@/components/ui/Input';
 import Heading from '@/components/ui/Heading';
 import { getGetDriversLeaderboardUseCase } from '@/lib/di-container';
+import { DriversLeaderboardPresenter } from '@/lib/presenters/DriversLeaderboardPresenter';
 import type { DriverLeaderboardItemViewModel, SkillLevel } from '@gridpilot/racing/application/presenters/IDriversLeaderboardPresenter';
 import Image from 'next/image';
 
@@ -181,9 +182,12 @@ export default function DriverLeaderboardPage() {
   useEffect(() => {
     const load = async () => {
       const useCase = getGetDriversLeaderboardUseCase();
-      await useCase.execute();
+      const presenter = new DriversLeaderboardPresenter();
-      const viewModel = useCase.presenter.getViewModel();
+      await useCase.execute(undefined as void, presenter);
-      setDrivers(viewModel.drivers);
+      const viewModel = presenter.getViewModel();
+      if (viewModel) {
+        setDrivers(viewModel.drivers);
+      }
       setLoading(false);
     };
 

apps/website/app/leaderboards/page.tsx

@@ -21,6 +21,7 @@ import {
 import Button from '@/components/ui/Button';
 import Heading from '@/components/ui/Heading';
 import { getGetDriversLeaderboardUseCase, getGetTeamsLeaderboardUseCase } from '@/lib/di-container';
+import { DriversLeaderboardPresenter } from '@/lib/presenters/DriversLeaderboardPresenter';
 import { TeamsLeaderboardPresenter } from '@/lib/presenters/TeamsLeaderboardPresenter';
 import type { DriverLeaderboardItemViewModel, SkillLevel } from '@gridpilot/racing/application/presenters/IDriversLeaderboardPresenter';
 import type { TeamLeaderboardItemViewModel } from '@gridpilot/racing/application/presenters/ITeamsLeaderboardPresenter';
@@ -287,15 +288,16 @@ export default function LeaderboardsPage() {
       try {
         const driversUseCase = getGetDriversLeaderboardUseCase();
         const teamsUseCase = getGetTeamsLeaderboardUseCase();
+        const driversPresenter = new DriversLeaderboardPresenter();
         const teamsPresenter = new TeamsLeaderboardPresenter();
 
-        await driversUseCase.execute();
+        await driversUseCase.execute(undefined as void, driversPresenter);
         await teamsUseCase.execute(undefined as void, teamsPresenter);
 
-        const driversViewModel = driversUseCase.presenter.getViewModel();
+        const driversViewModel = driversPresenter.getViewModel();
         const teamsViewModel = teamsPresenter.getViewModel();
 
-        setDrivers(driversViewModel.drivers);
+        setDrivers(driversViewModel?.drivers ?? []);
         setTeams(teamsViewModel ? teamsViewModel.teams : []);
       } catch (error) {
         console.error('Failed to load leaderboard data:', error);

apps/website/app/leagues/[id]/page.tsx

@@ -33,6 +33,7 @@ import {
   getSponsorRepository,
   getSeasonSponsorshipRepository,
 } from '@/lib/di-container';
+import { LeagueScoringConfigPresenter } from '@/lib/presenters/LeagueScoringConfigPresenter';
 import { Trophy, Star, ExternalLink } from 'lucide-react';
 import { getMembership, getLeagueMembers } from '@/lib/leagueMembership';
 import { useEffectiveDriverId } from '@/lib/currentDriver';
@@ -125,8 +126,9 @@ export default function LeagueDetailPage() {
 
       // Load scoring configuration for the active season
       const getLeagueScoringConfigUseCase = getGetLeagueScoringConfigUseCase();
-      await getLeagueScoringConfigUseCase.execute({ leagueId });
+      const scoringPresenter = new LeagueScoringConfigPresenter();
-      const scoringViewModel = getLeagueScoringConfigUseCase.presenter.getViewModel();
+      await getLeagueScoringConfigUseCase.execute({ leagueId }, scoringPresenter);
+      const scoringViewModel = scoringPresenter.getViewModel();
       setScoringConfig(scoringViewModel as unknown as LeagueScoringConfigDTO);
 
       // Load all drivers for standings and map to DTOs for UI components

apps/website/app/leagues/[id]/rulebook/page.tsx

@@ -7,6 +7,7 @@ import {
   getLeagueRepository,
   getGetLeagueScoringConfigUseCase
 } from '@/lib/di-container';
+import { LeagueScoringConfigPresenter } from '@/lib/presenters/LeagueScoringConfigPresenter';
 import type { LeagueScoringConfigDTO } from '@gridpilot/racing/application/dto/LeagueScoringConfigDTO';
 import type { League } from '@gridpilot/racing/domain/entities/League';
 
@@ -35,8 +36,9 @@ export default function LeagueRulebookPage() {
 
         setLeague(leagueData);
 
-        await scoringUseCase.execute({ leagueId });
+        const scoringPresenter = new LeagueScoringConfigPresenter();
-        const scoringViewModel = scoringUseCase.presenter.getViewModel();
+        await scoringUseCase.execute({ leagueId }, scoringPresenter);
+        const scoringViewModel = scoringPresenter.getViewModel();
         setScoringConfig(scoringViewModel as unknown as LeagueScoringConfigDTO);
       } catch (err) {
         console.error('Failed to load scoring config:', err);

apps/website/app/leagues/[id]/standings/page.tsx

@@ -14,6 +14,7 @@ import {
   getDriverRepository,
   getLeagueMembershipRepository
 } from '@/lib/di-container';
+import { LeagueDriverSeasonStatsPresenter } from '@/lib/presenters/LeagueDriverSeasonStatsPresenter';
 import { useEffectiveDriverId } from '@/lib/currentDriver';
 import { isLeagueAdminOrHigherRole } from '@/lib/leagueRoles';
 import type { MembershipRole, LeagueMembership } from '@/lib/leagueMembership';
@@ -36,15 +37,9 @@ export default function LeagueStandingsPage() {
       const driverRepo = getDriverRepository();
       const membershipRepo = getLeagueMembershipRepository();
 
-      await getLeagueDriverSeasonStatsUseCase.execute({ leagueId });
+      const presenter = new LeagueDriverSeasonStatsPresenter();
-      type GetLeagueDriverSeasonStatsUseCaseType = {
+      await getLeagueDriverSeasonStatsUseCase.execute({ leagueId }, presenter);
-        presenter: {
+      const standingsViewModel = presenter.getViewModel();
-          getViewModel(): { stats: LeagueDriverSeasonStatsDTO[] };
-        };
-      };
-      const typedUseCase =
-        getLeagueDriverSeasonStatsUseCase as GetLeagueDriverSeasonStatsUseCaseType;
-      const standingsViewModel = typedUseCase.presenter.getViewModel();
       setStandings(standingsViewModel.stats);
 
       const allDrivers = await driverRepo.findAll();

apps/website/app/leagues/page.tsx

@@ -30,7 +30,8 @@ import Button from '@/components/ui/Button';
 import Card from '@/components/ui/Card';
 import Input from '@/components/ui/Input';
 import Heading from '@/components/ui/Heading';
-import type { LeagueSummaryDTO } from '@gridpilot/racing/application/dto/LeagueSummaryDTO';
+import type { LeagueSummaryViewModel } from '@gridpilot/racing/application/presenters/IAllLeaguesWithCapacityAndScoringPresenter';
+import { AllLeaguesWithCapacityAndScoringPresenter } from '@/lib/presenters/AllLeaguesWithCapacityAndScoringPresenter';
 import { getGetAllLeaguesWithCapacityAndScoringUseCase } from '@/lib/di-container';
 
 // ============================================================================
@@ -57,7 +58,7 @@ interface Category {
   label: string;
   icon: React.ElementType;
   description: string;
-  filter: (league: LeagueSummaryDTO) => boolean;
+  filter: (league: LeagueSummaryViewModel) => boolean;
   color?: string;
 }
 
@@ -175,7 +176,7 @@ interface LeagueSliderProps {
   title: string;
   icon: React.ElementType;
   description: string;
-  leagues: LeagueSummaryDTO[];
+  leagues: LeagueSummaryViewModel[];
   onLeagueClick: (id: string) => void;
   autoScroll?: boolean;
   iconColor?: string;
@@ -377,25 +378,23 @@ function LeagueSlider({
 
 export default function LeaguesPage() {
   const router = useRouter();
-  const [realLeagues, setRealLeagues] = useState<LeagueSummaryDTO[]>([]);
+  const [realLeagues, setRealLeagues] = useState<LeagueSummaryViewModel[]>([]);
   const [loading, setLoading] = useState(true);
   const [searchQuery, setSearchQuery] = useState('');
   const [activeCategory, setActiveCategory] = useState<CategoryId>('all');
   const [showFilters, setShowFilters] = useState(false);
 
   useEffect(() => {
-    loadLeagues();
+    void loadLeagues();
   }, []);
 
   const loadLeagues = async () => {
     try {
       const useCase = getGetAllLeaguesWithCapacityAndScoringUseCase();
-      await useCase.execute();
+      const presenter = new AllLeaguesWithCapacityAndScoringPresenter();
-      const presenter = useCase.presenter as unknown as {
+      await useCase.execute(undefined as void, presenter);
-        getViewModel(): { leagues: LeagueSummaryDTO[] };
-      };
       const viewModel = presenter.getViewModel();
-      setRealLeagues(viewModel.leagues);
+      setRealLeagues(viewModel?.leagues ?? []);
     } catch (error) {
       console.error('Failed to load leagues:', error);
     } finally {
@@ -434,7 +433,7 @@ export default function LeaguesPage() {
       acc[category.id] = searchFilteredLeagues.filter(category.filter);
       return acc;
     },
-    {} as Record<CategoryId, LeagueSummaryDTO[]>,
+    {} as Record<CategoryId, LeagueSummaryViewModel[]>,
   );
 
   // Featured categories to show as sliders with different scroll speeds and alternating directions

apps/website/app/races/[id]/page.tsx

@@ -34,6 +34,7 @@ import {
   ArrowLeft,
   Scale,
 } from 'lucide-react';
+import { RaceDetailPresenter } from '@/lib/presenters/RaceDetailPresenter';
 
 export default function RaceDetailPage() {
   const router = useRouter();
@@ -57,8 +58,9 @@ export default function RaceDetailPage() {
     setError(null);
     try {
       const useCase = getGetRaceDetailUseCase();
-      await useCase.execute({ raceId, driverId: currentDriverId });
+      const presenter = new RaceDetailPresenter();
-      const vm = useCase.presenter.getViewModel();
+      await useCase.execute({ raceId, driverId: currentDriverId }, presenter);
+      const vm = presenter.getViewModel();
       if (!vm) {
         throw new Error('Race detail not available');
       }

apps/website/app/races/[id]/results/page.tsx

@@ -13,6 +13,8 @@ import {
   getGetRaceResultsDetailUseCase,
   getImportRaceResultsUseCase,
 } from '@/lib/di-container';
+import { RaceWithSOFPresenter } from '@/lib/presenters/RaceWithSOFPresenter';
+import { RaceResultsDetailPresenter } from '@/lib/presenters/RaceResultsDetailPresenter';
 import type {
   RaceResultsHeaderViewModel,
   RaceResultsLeagueViewModel,
@@ -71,7 +73,7 @@ export default function RaceResultsPage() {
   const [currentDriverId, setCurrentDriverId] = useState<string | undefined>(undefined);
   const [raceSOF, setRaceSOF] = useState<number | null>(null);
   const [penalties, setPenalties] = useState<PenaltyData[]>([]);
-  const [pointsSystem, setPointsSystem] = useState<Record<number, number>>({});
+  const [pointsSystem, setPointsSystem] = useState<Record<number, number> | undefined>(undefined);
   const [fastestLapTime, setFastestLapTime] = useState<number | undefined>(undefined);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
@@ -81,9 +83,10 @@ export default function RaceResultsPage() {
   const loadData = async () => {
     try {
       const raceResultsUseCase = getGetRaceResultsDetailUseCase();
-      await raceResultsUseCase.execute({ raceId });
+      const raceResultsPresenter = new RaceResultsDetailPresenter();
+      await raceResultsUseCase.execute({ raceId }, raceResultsPresenter);
 
-      const viewModel = raceResultsUseCase.presenter.getViewModel();
+      const viewModel = raceResultsPresenter.getViewModel();
 
       if (!viewModel) {
         setError('Failed to load race data');
@@ -130,8 +133,9 @@ export default function RaceResultsPage() {
 
       try {
         const raceWithSOFUseCase = getGetRaceWithSOFUseCase();
-        await raceWithSOFUseCase.execute({ raceId });
+        const sofPresenter = new RaceWithSOFPresenter();
-        const raceViewModel = raceWithSOFUseCase.presenter.getViewModel();
+        await raceWithSOFUseCase.execute({ raceId }, sofPresenter);
+        const raceViewModel = sofPresenter.getViewModel();
         if (raceViewModel) {
           setRaceSOF(raceViewModel.strengthOfField);
         }
@@ -290,7 +294,7 @@ export default function RaceResultsPage() {
             <ResultsTable
               results={results}
               drivers={drivers}
-              pointsSystem={pointsSystem}
+              pointsSystem={pointsSystem ?? {}}
               fastestLapTime={fastestLapTime ?? 0}
               penalties={penalties}
               currentDriverId={currentDriverId ?? ''}

apps/website/app/races/all/page.tsx

@@ -8,6 +8,7 @@ import Button from '@/components/ui/Button';
 import Heading from '@/components/ui/Heading';
 import Breadcrumbs from '@/components/layout/Breadcrumbs';
 import { getGetAllRacesPageDataUseCase } from '@/lib/di-container';
+import { AllRacesPagePresenter } from '@/lib/presenters/AllRacesPagePresenter';
 import type {
   AllRacesPageViewModel,
   AllRacesListItemViewModel,
@@ -53,8 +54,9 @@ export default function AllRacesPage() {
   const loadRaces = async () => {
     try {
       const useCase = getGetAllRacesPageDataUseCase();
-      await useCase.execute();
+      const presenter = new AllRacesPagePresenter();
-      const viewModel = useCase.presenter.getViewModel();
+      await useCase.execute(undefined, presenter);
+      const viewModel = presenter.getViewModel();
       setPageData(viewModel);
     } catch (err) {
       console.error('Failed to load races:', err);

apps/website/app/races/page.tsx

@@ -7,6 +7,7 @@ import Card from '@/components/ui/Card';
 import Button from '@/components/ui/Button';
 import Heading from '@/components/ui/Heading';
 import { getGetRacesPageDataUseCase } from '@/lib/di-container';
+import { RacesPagePresenter } from '@/lib/presenters/RacesPagePresenter';
 import type {
   RacesPageViewModel,
   RaceListItemViewModel,
@@ -46,8 +47,9 @@ export default function RacesPage() {
   const loadRaces = async () => {
     try {
       const useCase = getGetRacesPageDataUseCase();
-      await useCase.execute();
+      const presenter = new RacesPagePresenter();
-      const data = useCase.presenter.getViewModel();
+      await useCase.execute(undefined, presenter);
+      const data = presenter.getViewModel();
       setPageData(data);
     } catch (err) {
       console.error('Failed to load races:', err);

apps/website/app/teams/[id]/page.tsx

@@ -10,6 +10,8 @@ import Breadcrumbs from '@/components/layout/Breadcrumbs';
 import SponsorInsightsCard, { useSponsorMode, MetricBuilders, SlotTemplates } from '@/components/sponsors/SponsorInsightsCard';
 import { getImageService } from '@/lib/di-container';
 import { TeamMembersPresenter } from '@/lib/presenters/TeamMembersPresenter';
+import { TeamDetailsPresenter } from '@/lib/presenters/TeamDetailsPresenter';
+import type { TeamDetailsViewModel } from '@gridpilot/racing/application/presenters/ITeamDetailsPresenter';
 import TeamRoster from '@/components/teams/TeamRoster';
 import TeamStandings from '@/components/teams/TeamStandings';
 import TeamAdmin from '@/components/teams/TeamAdmin';
@@ -20,7 +22,6 @@ import {
   getTeamMembershipRepository,
 } from '@/lib/di-container';
 import { useEffectiveDriverId } from '@/lib/currentDriver';
-import type { Team } from '@gridpilot/racing';
 import { Users, Trophy, TrendingUp, Star, Zap } from 'lucide-react';
 
 type TeamRole = 'owner' | 'manager' | 'driver';
@@ -37,7 +38,9 @@ export default function TeamDetailPage() {
   const params = useParams();
   const teamId = params.id as string;
 
-  const [team, setTeam] = useState<Team | null>(null);
+  type TeamViewModel = TeamDetailsViewModel['team'];
+
+  const [team, setTeam] = useState<TeamViewModel | null>(null);
   const [memberships, setMemberships] = useState<TeamMembership[]>([]);
   const [activeTab, setActiveTab] = useState<Tab>('overview');
   const [loading, setLoading] = useState(true);
@@ -51,11 +54,9 @@ export default function TeamDetailPage() {
       const detailsUseCase = getGetTeamDetailsUseCase();
       const membersUseCase = getGetTeamMembersUseCase();
 
-      await detailsUseCase.execute(teamId, currentDriverId);
+      const detailsPresenter = new TeamDetailsPresenter();
-      const detailsPresenter = detailsUseCase.presenter;
+      await detailsUseCase.execute({ teamId, driverId: currentDriverId }, detailsPresenter);
-      const detailsViewModel = detailsPresenter
+      const detailsViewModel = detailsPresenter.getViewModel();
-        ? (detailsPresenter as any).getViewModel?.() as { team: Team } | null
-        : null;
 
       if (!detailsViewModel) {
         setTeam(null);

apps/website/components/leagues/LeagueCard.tsx

@@ -12,12 +12,12 @@ import {
   ChevronRight,
   Sparkles,
 } from 'lucide-react';
-import type { LeagueSummaryDTO } from '@gridpilot/racing/application/dto/LeagueSummaryDTO';
+import type { LeagueSummaryViewModel } from '@gridpilot/racing/application/presenters/IAllLeaguesWithCapacityAndScoringPresenter';
 import { getLeagueCoverClasses } from '@/lib/leagueCovers';
 import { getImageService } from '@/lib/di-container';
 
 interface LeagueCardProps {
-  league: LeagueSummaryDTO;
+  league: LeagueSummaryViewModel;
   onClick?: () => void;
 }
 
@@ -65,7 +65,7 @@ function getGameColor(gameId?: string): string {
   }
 }
 
-function isNewLeague(createdAt: Date): boolean {
+function isNewLeague(createdAt: string | Date): boolean {
   const oneWeekAgo = new Date();
   oneWeekAgo.setDate(oneWeekAgo.getDate() - 7);
   return new Date(createdAt) > oneWeekAgo;

apps/website/components/mockups/DriverProfileMockup.tsx

@@ -251,7 +251,7 @@ export default function DriverProfileMockup() {
 
 function AnimatedRating({ shouldReduceMotion, value }: { shouldReduceMotion: boolean; value: number }) {
   const count = useMotionValue(0);
-  const rounded = useTransform(count, (v) => Math.round(v));
+  const rounded = useTransform(count, (v: number) => Math.round(v));
   const spring = useSpring(count, { stiffness: 50, damping: 25 });
 
   useEffect(() => {
@@ -282,7 +282,7 @@ function AnimatedCounter({
   suffix?: string;
 }) {
   const count = useMotionValue(0);
-  const rounded = useTransform(count, (v) => Math.round(v));
+  const rounded = useTransform(count, (v: number) => Math.round(v));
 
   useEffect(() => {
     if (shouldReduceMotion) {

apps/website/components/mockups/RatingFactorsMockup.tsx

@@ -146,7 +146,7 @@ function RatingFactor({
 }) {
   const progress = useMotionValue(0);
   const smoothProgress = useSpring(progress, { stiffness: 60, damping: 25 });
-  const width = useTransform(smoothProgress, (v) => `${v}%`);
+  const width = useTransform(smoothProgress, (v: number) => `${v}%`);
 
   useEffect(() => {
     if (shouldReduceMotion) {
@@ -187,7 +187,7 @@ function RatingFactor({
 
 function AnimatedRating({ shouldReduceMotion }: { shouldReduceMotion: boolean }) {
   const count = useMotionValue(0);
-  const rounded = useTransform(count, (v) => Math.round(v));
+  const rounded = useTransform(count, (v: number) => Math.round(v));
   const spring = useSpring(count, { stiffness: 50, damping: 25 });
 
   useEffect(() => {

apps/website/env.d.ts

@@ -1,6 +1,55 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
 
+declare module 'framer-motion' {
+  import type { ComponentType } from 'react';
+
+  // Minimal shim to satisfy strict typing for usage in JSX
+  export type MotionComponent = ComponentType<Record<string, unknown>>;
+
+  export const motion: {
+    div: MotionComponent;
+    span: MotionComponent;
+    button: MotionComponent;
+    svg: MotionComponent;
+    p: MotionComponent;
+    [element: string]: MotionComponent;
+  };
+
+  export const AnimatePresence: ComponentType<Record<string, unknown>>;
+
+  export function useReducedMotion(): boolean;
+
+  // Shim motion values with a minimal interface exposing .set()
+  export interface MotionValue<T = number> {
+    get(): T;
+    set(v: T): void;
+  }
+
+  export function useMotionValue(initial: number): MotionValue<number>;
+  export function useSpring(value: MotionValue<number> | number, config?: Record<string, unknown>): MotionValue<number>;
+  export function useTransform<TInput, TOutput>(
+    value: MotionValue<TInput>,
+    transformer: (input: TInput) => TOutput,
+  ): MotionValue<TOutput>;
+}
+
+declare module '@next/third-party-devtools' {
+  import type { ComponentType } from 'react';
+  const Devtools: ComponentType<Record<string, unknown>>;
+  export default Devtools;
+}
+
+declare module 'react/compiler-runtime' {
+  export {};
+}
+
+// Shim missing React namespace member used by Next devtools types
+declare namespace React {
+  // Minimal placeholder type; generic to match Next's usage
+  type ActionDispatch<T = unknown> = (action: T) => void;
+}
+
 declare namespace NodeJS {
   interface ProcessEnv {
     NEXT_PUBLIC_GRIDPILOT_MODE?: 'pre-launch' | 'alpha';

apps/website/lib/di-config.ts

@@ -195,15 +195,15 @@ export function configureDIContainer(): void {
 
   // Create driver statistics from seed data
   type DemoDriverStatsEntry = {
-    rating?: number;
+    rating: number;
-    wins?: number;
+    wins: number;
-    podiums?: number;
+    podiums: number;
+    totalRaces: number;
+    overallRank: number | null;
     dnfs?: number;
-    totalRaces?: number;
     avgFinish?: number;
     bestFinish?: number;
     worstFinish?: number;
-    overallRank?: number;
     consistency?: number;
     percentile?: number;
     driverId?: string;
@@ -952,10 +952,9 @@ export function configureDIContainer(): void {
     new IsDriverRegisteredForRaceUseCase(raceRegistrationRepository, driverRegistrationStatusPresenter)
   );
 
-  const raceRegistrationsPresenter = new RaceRegistrationsPresenter();
   container.registerInstance(
     DI_TOKENS.GetRaceRegistrationsUseCase,
-    new GetRaceRegistrationsUseCase(raceRegistrationRepository, raceRegistrationsPresenter)
+    new GetRaceRegistrationsUseCase(raceRegistrationRepository)
   );
 
   const leagueStandingsPresenter = new LeagueStandingsPresenter();
@@ -964,7 +963,6 @@ export function configureDIContainer(): void {
     new GetLeagueStandingsUseCase(standingRepository),
   );
 
-  const leagueDriverSeasonStatsPresenter = new LeagueDriverSeasonStatsPresenter();
   container.registerInstance(
     DI_TOKENS.GetLeagueDriverSeasonStatsUseCase,
     new GetLeagueDriverSeasonStatsUseCase(
@@ -986,21 +984,17 @@ export function configureDIContainer(): void {
           };
         },
       },
-      leagueDriverSeasonStatsPresenter,
     ),
   );
 
-  const allLeaguesWithCapacityPresenter = new AllLeaguesWithCapacityPresenter();
   container.registerInstance(
     DI_TOKENS.GetAllLeaguesWithCapacityUseCase,
     new GetAllLeaguesWithCapacityUseCase(
       leagueRepository,
       leagueMembershipRepository,
-      allLeaguesWithCapacityPresenter
     )
   );
 
-  const allLeaguesWithCapacityAndScoringPresenter = new AllLeaguesWithCapacityAndScoringPresenter();
   container.registerInstance(
     DI_TOKENS.GetAllLeaguesWithCapacityAndScoringUseCase,
     new GetAllLeaguesWithCapacityAndScoringUseCase(
@@ -1010,7 +1004,6 @@ export function configureDIContainer(): void {
       leagueScoringConfigRepository,
       gameRepository,
       leagueScoringPresetProvider,
-      allLeaguesWithCapacityAndScoringPresenter
     )
   );
 
@@ -1020,7 +1013,6 @@ export function configureDIContainer(): void {
     new ListLeagueScoringPresetsUseCase(leagueScoringPresetProvider)
   );
 
-  const leagueScoringConfigPresenter = new LeagueScoringConfigPresenter();
   container.registerInstance(
     DI_TOKENS.GetLeagueScoringConfigUseCase,
     new GetLeagueScoringConfigUseCase(
@@ -1029,7 +1021,6 @@ export function configureDIContainer(): void {
       leagueScoringConfigRepository,
       gameRepository,
       leagueScoringPresetProvider,
-      leagueScoringConfigPresenter
     )
   );
 
@@ -1049,7 +1040,6 @@ export function configureDIContainer(): void {
     new PreviewLeagueScheduleUseCase(undefined, leagueSchedulePreviewPresenter),
   );
 
-  const raceWithSOFPresenter = new RaceWithSOFPresenter();
   container.registerInstance(
     DI_TOKENS.GetRaceWithSOFUseCase,
     new GetRaceWithSOFUseCase(
@@ -1057,7 +1047,6 @@ export function configureDIContainer(): void {
       raceRegistrationRepository,
       resultRepository,
       driverRatingProvider,
-      raceWithSOFPresenter
     )
   );
 
@@ -1073,21 +1062,18 @@ export function configureDIContainer(): void {
     )
   );
 
-  const racesPresenter = new RacesPagePresenter();
   container.registerInstance(
     DI_TOKENS.GetRacesPageDataUseCase,
-    new GetRacesPageDataUseCase(raceRepository, leagueRepository, racesPresenter)
+    new GetRacesPageDataUseCase(raceRepository, leagueRepository)
   );
 
-  const allRacesPagePresenter = new AllRacesPagePresenter();
   container.registerInstance(
     DI_TOKENS.GetAllRacesPageDataUseCase,
-    new GetAllRacesPageDataUseCase(raceRepository, leagueRepository, allRacesPagePresenter)
+    new GetAllRacesPageDataUseCase(raceRepository, leagueRepository)
   );
 
   const imageService = container.resolve<ImageServicePort>(DI_TOKENS.ImageService);
 
-  const raceDetailPresenter = new RaceDetailPresenter();
   container.registerInstance(
     DI_TOKENS.GetRaceDetailUseCase,
     new GetRaceDetailUseCase(
@@ -1099,11 +1085,9 @@ export function configureDIContainer(): void {
       leagueMembershipRepository,
       driverRatingProvider,
       imageService,
-      raceDetailPresenter
     )
   );
 
-  const raceResultsDetailPresenter = new RaceResultsDetailPresenter();
   container.registerInstance(
     DI_TOKENS.GetRaceResultsDetailUseCase,
     new GetRaceResultsDetailUseCase(
@@ -1112,7 +1096,6 @@ export function configureDIContainer(): void {
       resultRepository,
       driverRepository,
       penaltyRepository,
-      raceResultsDetailPresenter
     )
   );
 
@@ -1149,7 +1132,6 @@ export function configureDIContainer(): void {
     },
   };
 
-  const driversPresenter = new DriversLeaderboardPresenter();
   container.registerInstance(
     DI_TOKENS.GetDriversLeaderboardUseCase,
     new GetDriversLeaderboardUseCase(
@@ -1157,7 +1139,6 @@ export function configureDIContainer(): void {
       rankingService,
       driverStatsService,
       imageService,
-      driversPresenter
     )
   );
 
@@ -1215,7 +1196,6 @@ export function configureDIContainer(): void {
     };
   };
 
-  const dashboardOverviewPresenter = new DashboardOverviewPresenter();
   container.registerInstance(
     DI_TOKENS.GetDashboardOverviewUseCase,
     new GetDashboardOverviewUseCase(
@@ -1230,7 +1210,6 @@ export function configureDIContainer(): void {
       socialRepository,
       imageService,
       getDriverStatsForDashboard,
-      dashboardOverviewPresenter
     )
   );
 
@@ -1261,10 +1240,9 @@ export function configureDIContainer(): void {
     new GetAllTeamsUseCase(teamRepository, teamMembershipRepository),
   );
  
-  const teamDetailsPresenter = new TeamDetailsPresenter();
   container.registerInstance(
     DI_TOKENS.GetTeamDetailsUseCase,
-    new GetTeamDetailsUseCase(teamRepository, teamMembershipRepository, teamDetailsPresenter)
+    new GetTeamDetailsUseCase(teamRepository, teamMembershipRepository)
   );
 
   const teamMembersPresenter = new TeamMembersPresenter();
@@ -1313,7 +1291,6 @@ export function configureDIContainer(): void {
   const sponsorRepository = container.resolve<ISponsorRepository>(DI_TOKENS.SponsorRepository);
   const seasonSponsorshipRepository = container.resolve<ISeasonSponsorshipRepository>(DI_TOKENS.SeasonSponsorshipRepository);
 
-  const sponsorDashboardPresenter = new SponsorDashboardPresenter();
   container.registerInstance(
     DI_TOKENS.GetSponsorDashboardUseCase,
     new GetSponsorDashboardUseCase(
@@ -1323,11 +1300,9 @@ export function configureDIContainer(): void {
       leagueRepository,
       leagueMembershipRepository,
       raceRepository,
-      sponsorDashboardPresenter
     )
   );
 
-  const sponsorSponsorshipsPresenter = new SponsorSponsorshipsPresenter();
   container.registerInstance(
     DI_TOKENS.GetSponsorSponsorshipsUseCase,
     new GetSponsorSponsorshipsUseCase(
@@ -1337,7 +1312,6 @@ export function configureDIContainer(): void {
       leagueRepository,
       leagueMembershipRepository,
       raceRepository,
-      sponsorSponsorshipsPresenter
     )
   );
 

apps/website/lib/di-container.ts

@@ -625,7 +625,7 @@ export function getIsDriverRegisteredForRaceQuery(): {
   return {
     async execute(input: { raceId: string; driverId: string }): Promise<boolean> {
       const result = await useCase.execute(input);
-      return result as unknown as boolean;
+      return Boolean(result);
     },
   };
 }

apps/website/lib/presenters/AllLeaguesWithCapacityAndScoringPresenter.ts

@@ -1,4 +1,3 @@
-import type { League } from '@gridpilot/racing/domain/entities/League';
 import type {
   IAllLeaguesWithCapacityAndScoringPresenter,
   LeagueEnrichedData,
@@ -9,7 +8,11 @@ import type {
 export class AllLeaguesWithCapacityAndScoringPresenter implements IAllLeaguesWithCapacityAndScoringPresenter {
   private viewModel: AllLeaguesWithCapacityAndScoringViewModel | null = null;
 
-  present(enrichedLeagues: LeagueEnrichedData[]): AllLeaguesWithCapacityAndScoringViewModel {
+  reset(): void {
+    this.viewModel = null;
+  }
+
+  present(enrichedLeagues: LeagueEnrichedData[]): void {
     const leagueItems: LeagueSummaryViewModel[] = enrichedLeagues.map((data) => {
       const { league, usedDriverSlots, season, scoringConfig, game, preset } = data;
 
@@ -68,7 +71,7 @@ export class AllLeaguesWithCapacityAndScoringPresenter implements IAllLeaguesWit
         name: league.name,
         description: league.description,
         ownerId: league.ownerId,
-        createdAt: league.createdAt,
+        createdAt: league.createdAt.toISOString(),
         maxDrivers: safeMaxDrivers,
         usedDriverSlots,
         // Team capacity is not yet modeled here; use zero for now to satisfy strict typing.
@@ -87,14 +90,9 @@ export class AllLeaguesWithCapacityAndScoringPresenter implements IAllLeaguesWit
       leagues: leagueItems,
       totalCount: leagueItems.length,
     };
-
-    return this.viewModel;
   }
 
-  getViewModel(): AllLeaguesWithCapacityAndScoringViewModel {
+  getViewModel(): AllLeaguesWithCapacityAndScoringViewModel | null {
-    if (!this.viewModel) {
-      throw new Error('Presenter has not been called yet');
-    }
     return this.viewModel;
   }
 

apps/website/lib/presenters/AllLeaguesWithCapacityPresenter.ts

@@ -1,17 +1,19 @@
-import type { League } from '@gridpilot/racing/domain/entities/League';
 import type {
   IAllLeaguesWithCapacityPresenter,
   LeagueWithCapacityViewModel,
   AllLeaguesWithCapacityViewModel,
+  AllLeaguesWithCapacityResultDTO,
 } from '@gridpilot/racing/application/presenters/IAllLeaguesWithCapacityPresenter';
 
 export class AllLeaguesWithCapacityPresenter implements IAllLeaguesWithCapacityPresenter {
   private viewModel: AllLeaguesWithCapacityViewModel | null = null;
 
-  present(
+  reset(): void {
-    leagues: League[],
+    this.viewModel = null;
-    memberCounts: Map<string, number>
+  }
-  ): AllLeaguesWithCapacityViewModel {
+
+  present(input: AllLeaguesWithCapacityResultDTO): void {
+    const { leagues, memberCounts } = input;
     const leagueItems: LeagueWithCapacityViewModel[] = leagues.map((league) => {
       const usedSlots = memberCounts.get(league.id) ?? 0;
 
@@ -63,14 +65,9 @@ export class AllLeaguesWithCapacityPresenter implements IAllLeaguesWithCapacityP
       leagues: leagueItems,
       totalCount: leagueItems.length,
     };
-
-    return this.viewModel;
   }
 
-  getViewModel(): AllLeaguesWithCapacityViewModel {
+  getViewModel(): AllLeaguesWithCapacityViewModel | null {
-    if (!this.viewModel) {
-      throw new Error('Presenter has not been called yet');
-    }
     return this.viewModel;
   }
 }

apps/website/lib/presenters/AllRacesPagePresenter.ts

@@ -1,13 +1,18 @@
 import type {
   IAllRacesPagePresenter,
+  AllRacesPageResultDTO,
   AllRacesPageViewModel,
 } from '@gridpilot/racing/application/presenters/IAllRacesPagePresenter';
 
 export class AllRacesPagePresenter implements IAllRacesPagePresenter {
   private viewModel: AllRacesPageViewModel | null = null;
 
-  present(viewModel: AllRacesPageViewModel): void {
+  reset(): void {
-    this.viewModel = viewModel;
+    this.viewModel = null;
+  }
+
+  present(dto: AllRacesPageResultDTO): void {
+    this.viewModel = dto;
   }
 
   getViewModel(): AllRacesPageViewModel | null {

apps/website/lib/presenters/DashboardOverviewPresenter.ts

@@ -1,13 +1,18 @@
 import type {
   IDashboardOverviewPresenter,
+  DashboardOverviewResultDTO,
   DashboardOverviewViewModel,
 } from '@gridpilot/racing/application/presenters/IDashboardOverviewPresenter';
 
 export class DashboardOverviewPresenter implements IDashboardOverviewPresenter {
   private viewModel: DashboardOverviewViewModel | null = null;
 
-  present(viewModel: DashboardOverviewViewModel): void {
+  reset(): void {
-    this.viewModel = viewModel;
+    this.viewModel = null;
+  }
+
+  present(dto: DashboardOverviewResultDTO): void {
+    this.viewModel = dto;
   }
 
   getViewModel(): DashboardOverviewViewModel | null {

apps/website/lib/presenters/DriversLeaderboardPresenter.ts

@@ -1,21 +1,20 @@
-import type { Driver } from '@gridpilot/racing/domain/entities/Driver';
-import type { SkillLevel } from '@gridpilot/racing/domain/services/SkillLevelService';
 import { SkillLevelService } from '@gridpilot/racing/domain/services/SkillLevelService';
 import type {
   IDriversLeaderboardPresenter,
   DriverLeaderboardItemViewModel,
   DriversLeaderboardViewModel,
+  DriversLeaderboardResultDTO,
 } from '@gridpilot/racing/application/presenters/IDriversLeaderboardPresenter';
 
 export class DriversLeaderboardPresenter implements IDriversLeaderboardPresenter {
   private viewModel: DriversLeaderboardViewModel | null = null;
 
-  present(
+  reset(): void {
-    drivers: Driver[],
+    this.viewModel = null;
-    rankings: Array<{ driverId: string; rating: number; overallRank: number }>,
+  }
-    stats: Record<string, { rating: number; wins: number; podiums: number; totalRaces: number; overallRank: number }>,
+
-    avatarUrls: Record<string, string>
+  present(input: DriversLeaderboardResultDTO): void {
-  ): DriversLeaderboardViewModel {
+    const { drivers, rankings, stats, avatarUrls } = input;
     const items: DriverLeaderboardItemViewModel[] = drivers.map((driver) => {
       const driverStats = stats[driver.id];
       const rating = driverStats?.rating ?? 0;
@@ -68,14 +67,9 @@ export class DriversLeaderboardPresenter implements IDriversLeaderboardPresenter
       totalWins,
       activeCount,
     };
-
-    return this.viewModel;
   }
 
-  getViewModel(): DriversLeaderboardViewModel {
+  getViewModel(): DriversLeaderboardViewModel | null {
-    if (!this.viewModel) {
-      throw new Error('Presenter has not been called yet');
-    }
     return this.viewModel;
   }
 }

apps/website/lib/presenters/LeagueDriverSeasonStatsPresenter.ts

@@ -2,23 +2,19 @@ import type {
   ILeagueDriverSeasonStatsPresenter,
   LeagueDriverSeasonStatsItemViewModel,
   LeagueDriverSeasonStatsViewModel,
+  LeagueDriverSeasonStatsResultDTO,
 } from '@gridpilot/racing/application/presenters/ILeagueDriverSeasonStatsPresenter';
 
 export class LeagueDriverSeasonStatsPresenter implements ILeagueDriverSeasonStatsPresenter {
   private viewModel: LeagueDriverSeasonStatsViewModel | null = null;
 
-  present(
+  reset(): void {
-    leagueId: string,
+    this.viewModel = null;
-    standings: Array<{
+  }
-      driverId: string;
+
-      position: number;
+  present(dto: LeagueDriverSeasonStatsResultDTO): void {
-      points: number;
+    const { leagueId, standings, penalties, driverResults, driverRatings } = dto;
-      racesCompleted: number;
+
-    }>,
-    penalties: Map<string, { baseDelta: number; bonusDelta: number }>,
-    driverResults: Map<string, Array<{ position: number }>>,
-    driverRatings: Map<string, { rating: number | null; ratingChange: number | null }>
-  ): LeagueDriverSeasonStatsViewModel {
     const stats: LeagueDriverSeasonStatsItemViewModel[] = standings.map((standing) => {
       const penalty = penalties.get(standing.driverId) ?? { baseDelta: 0, bonusDelta: 0 };
       const totalPenaltyPoints = penalty.baseDelta;
@@ -65,8 +61,6 @@ export class LeagueDriverSeasonStatsPresenter implements ILeagueDriverSeasonStat
       leagueId,
       stats,
     };
-
-    return this.viewModel;
   }
 
   getViewModel(): LeagueDriverSeasonStatsViewModel {

apps/website/lib/presenters/LeagueScoringConfigPresenter.ts

@@ -10,6 +10,10 @@ import type {
 export class LeagueScoringConfigPresenter implements ILeagueScoringConfigPresenter {
   private viewModel: LeagueScoringConfigViewModel | null = null;
 
+  reset(): void {
+    this.viewModel = null;
+  }
+
   present(data: LeagueScoringConfigData): LeagueScoringConfigViewModel {
     const championships: LeagueScoringChampionshipViewModel[] =
       data.championships.map((champ) => this.mapChampionship(champ));

apps/website/lib/presenters/RaceDetailPresenter.ts

@@ -6,9 +6,13 @@ import type {
 export class RaceDetailPresenter implements IRaceDetailPresenter {
   private viewModel: RaceDetailViewModel | null = null;
 
+  reset(): void {
+    this.viewModel = null;
+  }
+
   present(viewModel: RaceDetailViewModel): RaceDetailViewModel {
     this.viewModel = viewModel;
-    return this.viewModel;
+    return viewModel;
   }
 
   getViewModel(): RaceDetailViewModel | null {

apps/website/lib/presenters/RaceRegistrationsPresenter.ts

@@ -1,24 +1,25 @@
 import type {
   IRaceRegistrationsPresenter,
   RaceRegistrationsViewModel,
+  RaceRegistrationsResultDTO,
 } from '@gridpilot/racing/application/presenters/IRaceRegistrationsPresenter';
 
 export class RaceRegistrationsPresenter implements IRaceRegistrationsPresenter {
   private viewModel: RaceRegistrationsViewModel | null = null;
 
-  present(registeredDriverIds: string[]): RaceRegistrationsViewModel {
+  reset(): void {
+    this.viewModel = null;
+  }
+
+  present(input: RaceRegistrationsResultDTO): void {
+    const { registeredDriverIds } = input;
     this.viewModel = {
       registeredDriverIds,
       count: registeredDriverIds.length,
     };
-
-    return this.viewModel;
   }
 
-  getViewModel(): RaceRegistrationsViewModel {
+  getViewModel(): RaceRegistrationsViewModel | null {
-    if (!this.viewModel) {
-      throw new Error('Presenter has not been called yet');
-    }
     return this.viewModel;
   }
 }

apps/website/lib/presenters/RaceResultsDetailPresenter.ts

@@ -6,9 +6,12 @@ import type {
 export class RaceResultsDetailPresenter implements IRaceResultsDetailPresenter {
   private viewModel: RaceResultsDetailViewModel | null = null;
 
-  present(viewModel: RaceResultsDetailViewModel): RaceResultsDetailViewModel {
+  reset(): void {
+    this.viewModel = null;
+  }
+
+  present(viewModel: RaceResultsDetailViewModel): void {
     this.viewModel = viewModel;
-    return this.viewModel;
   }
 
   getViewModel(): RaceResultsDetailViewModel | null {

apps/website/lib/presenters/RaceWithSOFPresenter.ts

@@ -1,49 +1,35 @@
 import type {
   IRaceWithSOFPresenter,
+  RaceWithSOFResultDTO,
   RaceWithSOFViewModel,
 } from '@gridpilot/racing/application/presenters/IRaceWithSOFPresenter';
 
 export class RaceWithSOFPresenter implements IRaceWithSOFPresenter {
   private viewModel: RaceWithSOFViewModel | null = null;
 
-  present(
+  present(dto: RaceWithSOFResultDTO): void {
-    raceId: string,
-    leagueId: string,
-    scheduledAt: Date,
-    track: string,
-    trackId: string,
-    car: string,
-    carId: string,
-    sessionType: string,
-    status: string,
-    strengthOfField: number | null,
-    registeredCount: number,
-    maxParticipants: number,
-    participantCount: number
-  ): RaceWithSOFViewModel {
     this.viewModel = {
-      id: raceId,
+      id: dto.raceId,
-      leagueId,
+      leagueId: dto.leagueId,
-      scheduledAt: scheduledAt.toISOString(),
+      scheduledAt: dto.scheduledAt.toISOString(),
-      track,
+      track: dto.track,
-      trackId,
+      trackId: dto.trackId,
-      car,
+      car: dto.car,
-      carId,
+      carId: dto.carId,
-      sessionType,
+      sessionType: dto.sessionType,
-      status,
+      status: dto.status,
-      strengthOfField,
+      strengthOfField: dto.strengthOfField,
-      registeredCount,
+      registeredCount: dto.registeredCount,
-      maxParticipants,
+      maxParticipants: dto.maxParticipants,
-      participantCount,
+      participantCount: dto.participantCount,
     };
+  }
 
+  getViewModel(): RaceWithSOFViewModel | null {
     return this.viewModel;
   }
 
-  getViewModel(): RaceWithSOFViewModel {
+  reset(): void {
-    if (!this.viewModel) {
+    this.viewModel = null;
-      throw new Error('Presenter has not been called yet');
-    }
-    return this.viewModel;
   }
 }

apps/website/lib/presenters/RacesPagePresenter.ts

@@ -2,26 +2,18 @@ import type {
   IRacesPagePresenter,
   RacesPageViewModel,
   RaceListItemViewModel,
+  RacesPageResultDTO,
 } from '@gridpilot/racing/application/presenters/IRacesPagePresenter';
 
-interface RacesPageInput {
-  id: string;
-  track: string;
-  car: string;
-  scheduledAt: string | Date;
-  status: string;
-  leagueId: string;
-  leagueName: string;
-  strengthOfField: number | null;
-  isUpcoming: boolean;
-  isLive: boolean;
-  isPast: boolean;
-}
-
 export class RacesPagePresenter implements IRacesPagePresenter {
   private viewModel: RacesPageViewModel | null = null;
 
-  present(races: RacesPageInput[]): void {
+  reset(): void {
+    this.viewModel = null;
+  }
+
+  present(input: RacesPageResultDTO): void {
+    const { races } = input;
     const now = new Date();
     const nextWeek = new Date(now.getTime() + 7 * 24 * 60 * 60 * 1000);
 

apps/website/lib/presenters/SponsorDashboardPresenter.ts

@@ -1,14 +1,25 @@
-import type { ISponsorDashboardPresenter } from '@gridpilot/racing/application/presenters/ISponsorDashboardPresenter';
+import type {
+  ISponsorDashboardPresenter,
+  SponsorDashboardViewModel,
+} from '@gridpilot/racing/application/presenters/ISponsorDashboardPresenter';
 import type { SponsorDashboardDTO } from '@gridpilot/racing/application/use-cases/GetSponsorDashboardUseCase';
 
 export class SponsorDashboardPresenter implements ISponsorDashboardPresenter {
-  private data: SponsorDashboardDTO | null = null;
+  private viewModel: SponsorDashboardViewModel = null;
+
+  reset(): void {
+    this.viewModel = null;
+  }
 
   present(data: SponsorDashboardDTO | null): void {
-    this.data = data;
+    this.viewModel = data;
+  }
+
+  getViewModel(): SponsorDashboardViewModel {
+    return this.viewModel;
   }
 
   getData(): SponsorDashboardDTO | null {
-    return this.data;
+    return this.viewModel;
   }
 }

apps/website/lib/presenters/SponsorSponsorshipsPresenter.ts

@@ -1,14 +1,25 @@
-import type { ISponsorSponsorshipsPresenter } from '@gridpilot/racing/application/presenters/ISponsorSponsorshipsPresenter';
+import type {
+  ISponsorSponsorshipsPresenter,
+  SponsorSponsorshipsViewModel,
+} from '@gridpilot/racing/application/presenters/ISponsorSponsorshipsPresenter';
 import type { SponsorSponsorshipsDTO } from '@gridpilot/racing/application/use-cases/GetSponsorSponsorshipsUseCase';
 
 export class SponsorSponsorshipsPresenter implements ISponsorSponsorshipsPresenter {
-  private data: SponsorSponsorshipsDTO | null = null;
+  private viewModel: SponsorSponsorshipsViewModel = null;
+
+  reset(): void {
+    this.viewModel = null;
+  }
 
   present(data: SponsorSponsorshipsDTO | null): void {
-    this.data = data;
+    this.viewModel = data;
+  }
+
+  getViewModel(): SponsorSponsorshipsViewModel {
+    return this.viewModel;
   }
 
   getData(): SponsorSponsorshipsDTO | null {
-    return this.data;
+    return this.viewModel;
   }
 }

apps/website/lib/presenters/TeamDetailsPresenter.ts

@@ -1,18 +1,18 @@
-import type { Team } from '@gridpilot/racing/domain/entities/Team';
-import type { TeamMembership } from '@gridpilot/racing/domain/types/TeamMembership';
 import type {
   ITeamDetailsPresenter,
   TeamDetailsViewModel,
+  TeamDetailsResultDTO,
 } from '@gridpilot/racing/application/presenters/ITeamDetailsPresenter';
 
 export class TeamDetailsPresenter implements ITeamDetailsPresenter {
   private viewModel: TeamDetailsViewModel | null = null;
 
-  present(
+  reset(): void {
-    team: Team,
+    this.viewModel = null;
-    membership: TeamMembership | null,
+  }
-    driverId: string
+
-  ): TeamDetailsViewModel {
+  present(input: TeamDetailsResultDTO): void {
+    const { team, membership } = input;
     const canManage = membership?.role === 'owner' || membership?.role === 'manager';
 
     const viewModel: TeamDetailsViewModel = {
@@ -23,6 +23,7 @@ export class TeamDetailsPresenter implements ITeamDetailsPresenter {
         description: team.description,
         ownerId: team.ownerId,
         leagues: team.leagues,
+        createdAt: team.createdAt.toISOString(),
       },
       membership: membership
         ? {
@@ -35,14 +36,9 @@ export class TeamDetailsPresenter implements ITeamDetailsPresenter {
     };
 
     this.viewModel = viewModel;
-
-    return viewModel;
   }
 
-  getViewModel(): TeamDetailsViewModel {
+  getViewModel(): TeamDetailsViewModel | null {
-    if (!this.viewModel) {
-      throw new Error('Presenter has not been called yet');
-    }
     return this.viewModel;
   }
 }

apps/website/tsconfig.json

@@ -1,21 +1,11 @@
 {
+  "extends": "../../tsconfig.base.json",
   "compilerOptions": {
-    "target": "ES2022",
     "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,
-    "skipLibCheck": true,
-    "strict": true,
-    "noImplicitAny": true,
-    "noImplicitThis": true,
-    "alwaysStrict": true,
-    "exactOptionalPropertyTypes": true,
-    "noUncheckedIndexedAccess": true,
-    "noEmit": true,
-    "esModuleInterop": true,
     "module": "esnext",
     "moduleResolution": "bundler",
-    "resolveJsonModule": true,
+    "baseUrl": ".",
-    "isolatedModules": true,
     "jsx": "preserve",
     "incremental": true,
     "plugins": [
@@ -25,11 +15,19 @@
     ],
     "paths": {
       "@/*": ["./*"],
+      "@/lib/*": ["./lib/*"],
+      "@/components/*": ["./components/*"],
+      "@/app/*": ["./app/*"],
+      "@gridpilot/identity": ["../../packages/identity/index.ts"],
       "@gridpilot/identity/*": ["../../packages/identity/*"],
+      "@gridpilot/racing": ["../../packages/racing/index.ts"],
       "@gridpilot/racing/*": ["../../packages/racing/*"],
+      "@gridpilot/social": ["../../packages/social/index.ts"],
       "@gridpilot/social/*": ["../../packages/social/*"],
-      "@gridpilot/testing-support": ["../../packages/testing-support"],
+      "@gridpilot/testing-support": ["../../packages/testing-support/index.ts"],
-      "@gridpilot/media": ["../../packages/media"],
+      "@gridpilot/testing-support/*": ["../../packages/testing-support/*"],
+      "@gridpilot/media": ["../../packages/media/index.ts"],
+      "@gridpilot/media/*": ["../../packages/media/*"],
       "@gridpilot/shared": ["../../packages/shared/index.ts"],
       "@gridpilot/shared/application": ["../../packages/shared/application"],
       "@gridpilot/shared/application/*": ["../../packages/shared/application/*"],
@@ -40,5 +38,5 @@
     }
   },
   "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
-  "exclude": ["node_modules"]
+  "exclude": ["node_modules", ".next"]
 }

apps/website/types/third-party-shims.d.ts

@@ -0,0 +1,4 @@
+/**
+ * Intentionally left blank.
+ * Third-party shims are now defined in env.d.ts.
+ */

packages/automation/infrastructure/adapters/automation/engine/AutomationEngineAdapter.ts

@@ -2,6 +2,7 @@ import type { AutomationEnginePort } from '../../../../application/ports/Automat
 import type { HostedSessionConfig } from '../../../../domain/types/HostedSessionConfig';
 import { StepId } from '../../../../domain/value-objects/StepId';
 import type { IBrowserAutomation } from '../../../../application/ports/ScreenAutomationPort';
+import type { HostedSessionConfig } from '../../../../domain/types/HostedSessionConfig';
 import type { SessionRepositoryPort } from '../../../../application/ports/SessionRepositoryPort';
 import { StepTransitionValidator } from '../../../../domain/services/StepTransitionValidator';
 
@@ -36,6 +37,34 @@ export class AutomationEngineAdapter implements AutomationEnginePort {
     private readonly sessionRepository: SessionRepositoryPort
   ) {}
 
+  private toStepConfig(config: HostedSessionConfig): Record<string, unknown> {
+    const baseConfig: Record<string, unknown> = {
+      sessionName: config.sessionName,
+      trackId: config.trackId,
+      carIds: [...config.carIds],
+    };
+
+    if (config.serverName !== undefined) baseConfig.serverName = config.serverName;
+    if (config.password !== undefined) baseConfig.password = config.password;
+    if (config.adminPassword !== undefined) baseConfig.adminPassword = config.adminPassword;
+    if (config.maxDrivers !== undefined) baseConfig.maxDrivers = config.maxDrivers;
+    if (config.carSearch !== undefined) baseConfig.carSearch = config.carSearch;
+    if (config.trackSearch !== undefined) baseConfig.trackSearch = config.trackSearch;
+    if (config.weatherType !== undefined) baseConfig.weatherType = config.weatherType;
+    if (config.timeOfDay !== undefined) baseConfig.timeOfDay = config.timeOfDay;
+    if (config.sessionDuration !== undefined) baseConfig.sessionDuration = config.sessionDuration;
+    if (config.practiceLength !== undefined) baseConfig.practiceLength = config.practiceLength;
+    if (config.qualifyingLength !== undefined) baseConfig.qualifyingLength = config.qualifyingLength;
+    if (config.warmupLength !== undefined) baseConfig.warmupLength = config.warmupLength;
+    if (config.raceLength !== undefined) baseConfig.raceLength = config.raceLength;
+    if (config.startType !== undefined) baseConfig.startType = config.startType;
+    if (config.restarts !== undefined) baseConfig.restarts = config.restarts;
+    if (config.damageModel !== undefined) baseConfig.damageModel = config.damageModel;
+    if (config.trackState !== undefined) baseConfig.trackState = config.trackState;
+
+    return baseConfig;
+  }
+
   async validateConfiguration(config: HostedSessionConfig): Promise<ValidationResult> {
     if (!config.sessionName || config.sessionName.trim() === '') {
       return { isValid: false, error: 'Session name is required' };
@@ -89,7 +118,7 @@ export class AutomationEngineAdapter implements AutomationEnginePort {
         
         // Execute current step using the browser automation
         if (this.browserAutomation.executeStep) {
-          const result = await this.browserAutomation.executeStep(currentStep, config as unknown as Record<string, unknown>);
+          const result = await this.browserAutomation.executeStep(currentStep, this.toStepConfig(config));
           if (!result.success) {
             const stepDescription = StepTransitionValidator.getStepDescription(currentStep);
             const errorMessage = `Step ${currentStep.value} (${stepDescription}) failed: ${result.error}`;
@@ -117,7 +146,7 @@ export class AutomationEngineAdapter implements AutomationEnginePort {
           if (nextStep.isFinalStep()) {
             // Execute final step handler
             if (this.browserAutomation.executeStep) {
-              const result = await this.browserAutomation.executeStep(nextStep, config as unknown as Record<string, unknown>);
+              const result = await this.browserAutomation.executeStep(nextStep, this.toStepConfig(config));
               if (!result.success) {
                 const stepDescription = StepTransitionValidator.getStepDescription(nextStep);
                 const errorMessage = `Step ${nextStep.value} (${stepDescription}) failed: ${result.error}`;

packages/automation/infrastructure/adapters/automation/engine/MockAutomationEngineAdapter.ts

@@ -2,6 +2,7 @@ import type { AutomationEnginePort } from '../../../../application/ports/Automat
 import type { HostedSessionConfig } from '../../../../domain/types/HostedSessionConfig';
 import { StepId } from '../../../../domain/value-objects/StepId';
 import type { IBrowserAutomation } from '../../../../application/ports/ScreenAutomationPort';
+import type { HostedSessionConfig } from '../../../../domain/types/HostedSessionConfig';
 import type { SessionRepositoryPort } from '../../../../application/ports/SessionRepositoryPort';
 import { StepTransitionValidator } from '../../../../domain/services/StepTransitionValidator';
 
@@ -19,6 +20,34 @@ export class MockAutomationEngineAdapter implements AutomationEnginePort {
     private readonly sessionRepository: SessionRepositoryPort
   ) {}
 
+  private toStepConfig(config: HostedSessionConfig): Record<string, unknown> {
+    const baseConfig: Record<string, unknown> = {
+      sessionName: config.sessionName,
+      trackId: config.trackId,
+      carIds: [...config.carIds],
+    };
+
+    if (config.serverName !== undefined) baseConfig.serverName = config.serverName;
+    if (config.password !== undefined) baseConfig.password = config.password;
+    if (config.adminPassword !== undefined) baseConfig.adminPassword = config.adminPassword;
+    if (config.maxDrivers !== undefined) baseConfig.maxDrivers = config.maxDrivers;
+    if (config.carSearch !== undefined) baseConfig.carSearch = config.carSearch;
+    if (config.trackSearch !== undefined) baseConfig.trackSearch = config.trackSearch;
+    if (config.weatherType !== undefined) baseConfig.weatherType = config.weatherType;
+    if (config.timeOfDay !== undefined) baseConfig.timeOfDay = config.timeOfDay;
+    if (config.sessionDuration !== undefined) baseConfig.sessionDuration = config.sessionDuration;
+    if (config.practiceLength !== undefined) baseConfig.practiceLength = config.practiceLength;
+    if (config.qualifyingLength !== undefined) baseConfig.qualifyingLength = config.qualifyingLength;
+    if (config.warmupLength !== undefined) baseConfig.warmupLength = config.warmupLength;
+    if (config.raceLength !== undefined) baseConfig.raceLength = config.raceLength;
+    if (config.startType !== undefined) baseConfig.startType = config.startType;
+    if (config.restarts !== undefined) baseConfig.restarts = config.restarts;
+    if (config.damageModel !== undefined) baseConfig.damageModel = config.damageModel;
+    if (config.trackState !== undefined) baseConfig.trackState = config.trackState;
+
+    return baseConfig;
+  }
+
   async validateConfiguration(config: HostedSessionConfig): Promise<ValidationResult> {
     if (!config.sessionName || config.sessionName.trim() === '') {
       return { isValid: false, error: 'Session name is required' };
@@ -74,7 +103,7 @@ export class MockAutomationEngineAdapter implements AutomationEnginePort {
         if (this.browserAutomation.executeStep) {
           const result = await this.browserAutomation.executeStep(
             currentStep,
-            config as unknown as Record<string, unknown>,
+            this.toStepConfig(config),
           );
           if (!result.success) {
             const stepDescription = StepTransitionValidator.getStepDescription(currentStep);
@@ -105,7 +134,7 @@ export class MockAutomationEngineAdapter implements AutomationEnginePort {
             if (this.browserAutomation.executeStep) {
               const result = await this.browserAutomation.executeStep(
                 nextStep,
-                config as unknown as Record<string, unknown>,
+                this.toStepConfig(config),
               );
               if (!result.success) {
                 const stepDescription = StepTransitionValidator.getStepDescription(nextStep);

packages/automation/tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "../../tsconfig.json",
+  "extends": "../../tsconfig.base.json",
   "compilerOptions": {
     "rootDir": "..",
     "outDir": "dist",

packages/identity/tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "../../tsconfig.json",
+  "extends": "../../tsconfig.base.json",
   "compilerOptions": {
     "outDir": "dist",
     "declaration": true,

packages/media/tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "../../tsconfig.json",
+  "extends": "../../tsconfig.base.json",
   "compilerOptions": {
     "rootDir": ".",
     "outDir": "dist",

packages/racing/application/presenters/IAllLeaguesWithCapacityAndScoringPresenter.ts

@@ -3,13 +3,14 @@ import type { Season } from '../../domain/entities/Season';
 import type { LeagueScoringConfig } from '../../domain/entities/LeagueScoringConfig';
 import type { Game } from '../../domain/entities/Game';
 import type { LeagueScoringPresetDTO } from '../ports/LeagueScoringPresetProvider';
+import type { Presenter } from '@gridpilot/shared/presentation';
 
 export interface LeagueSummaryViewModel {
   id: string;
   name: string;
   description: string;
   ownerId: string;
-  createdAt: Date;
+  createdAt: string;
   maxDrivers: number;
   usedDriverSlots: number;
   maxTeams?: number;
@@ -20,7 +21,7 @@ export interface LeagueSummaryViewModel {
   scoring?: {
     gameId: string;
     gameName: string;
-    primaryChampionshipType: string;
+    primaryChampionshipType: 'driver' | 'team' | 'nations' | 'trophy';
     scoringPresetId: string;
     scoringPresetName: string;
     dropPolicySummary: string;
@@ -42,6 +43,5 @@ export interface LeagueEnrichedData {
   preset?: LeagueScoringPresetDTO;
 }
 
-export interface IAllLeaguesWithCapacityAndScoringPresenter {
+export interface IAllLeaguesWithCapacityAndScoringPresenter
-  present(enrichedLeagues: LeagueEnrichedData[]): AllLeaguesWithCapacityAndScoringViewModel;
+  extends Presenter<LeagueEnrichedData[], AllLeaguesWithCapacityAndScoringViewModel> {}
-}

packages/racing/application/presenters/IAllLeaguesWithCapacityPresenter.ts

@@ -1,4 +1,5 @@
 import type { League } from '../../domain/entities/League';
+import type { Presenter } from '@gridpilot/shared/presentation';
 
 export interface LeagueWithCapacityViewModel {
   id: string;
@@ -24,9 +25,10 @@ export interface AllLeaguesWithCapacityViewModel {
   totalCount: number;
 }
 
-export interface IAllLeaguesWithCapacityPresenter {
+export interface AllLeaguesWithCapacityResultDTO {
-  present(
+  leagues: League[];
-    leagues: League[],
+  memberCounts: Map<string, number>;
-    memberCounts: Map<string, number>
-  ): AllLeaguesWithCapacityViewModel;
 }
+
+export interface IAllLeaguesWithCapacityPresenter
+  extends Presenter<AllLeaguesWithCapacityResultDTO, AllLeaguesWithCapacityViewModel> {}

packages/racing/application/presenters/IAllRacesPagePresenter.ts

@@ -1,3 +1,5 @@
+import type { Presenter } from '@gridpilot/shared/presentation';
+
 export type AllRacesStatus = 'scheduled' | 'running' | 'completed' | 'cancelled' | 'all';
 
 export interface AllRacesListItemViewModel {
@@ -21,7 +23,7 @@ export interface AllRacesPageViewModel {
   filters: AllRacesFilterOptionsViewModel;
 }
 
-export interface IAllRacesPagePresenter {
+export type AllRacesPageResultDTO = AllRacesPageViewModel;
-  present(viewModel: AllRacesPageViewModel): void;
+
-  getViewModel(): AllRacesPageViewModel | null;
+export interface IAllRacesPagePresenter
-}
+  extends Presenter<AllRacesPageResultDTO, AllRacesPageViewModel> {}

packages/racing/application/presenters/IAllTeamsPresenter.ts

@@ -1,4 +1,3 @@
-import type { Team } from '../../domain/entities/Team';
 import type { Presenter } from '@gridpilot/shared/presentation';
 
 export interface TeamListItemViewModel {
@@ -19,7 +18,16 @@ export interface AllTeamsViewModel {
 }
 
 export interface AllTeamsResultDTO {
-  teams: Array<Team & { memberCount: number }>;
+  teams: Array<{
+    id: string;
+    name: string;
+    tag: string;
+    description: string;
+    ownerId: string;
+    leagues: string[];
+    createdAt: Date;
+    memberCount: number;
+  }>;
 }
 
 export interface IAllTeamsPresenter

packages/racing/application/presenters/IDashboardOverviewPresenter.ts

@@ -1,3 +1,5 @@
+import type { Presenter } from '@gridpilot/shared/presentation';
+
 export interface DashboardDriverSummaryViewModel {
   id: string;
   name: string;
@@ -82,7 +84,7 @@ export interface DashboardOverviewViewModel {
   friends: DashboardFriendSummaryViewModel[];
 }
 
-export interface IDashboardOverviewPresenter {
+export type DashboardOverviewResultDTO = DashboardOverviewViewModel;
-  present(viewModel: DashboardOverviewViewModel): void;
+
-  getViewModel(): DashboardOverviewViewModel | null;
+export interface IDashboardOverviewPresenter
-}
+  extends Presenter<DashboardOverviewResultDTO, DashboardOverviewViewModel> {}

packages/racing/application/presenters/IDriversLeaderboardPresenter.ts

@@ -1,5 +1,6 @@
 import type { Driver } from '../../domain/entities/Driver';
 import type { SkillLevel } from '../../domain/services/SkillLevelService';
+import type { Presenter } from '@gridpilot/shared/presentation';
 
 export type { SkillLevel };
 
@@ -24,13 +25,21 @@ export interface DriversLeaderboardViewModel {
   activeCount: number;
 }
 
-export interface IDriversLeaderboardPresenter {
+export interface DriversLeaderboardResultDTO {
-  present(
+  drivers: Driver[];
-    drivers: Driver[],
+  rankings: Array<{ driverId: string; rating: number; overallRank: number | null }>;
-    rankings: Array<{ driverId: string; rating: number; overallRank: number }>,
+  stats: Record<
-    stats: Record<string, { rating: number; wins: number; podiums: number; totalRaces: number; overallRank: number }>,
+    string,
-    avatarUrls: Record<string, string>
+    {
-  ): DriversLeaderboardViewModel;
+      rating: number;
-
+      wins: number;
-  getViewModel(): DriversLeaderboardViewModel;
+      podiums: number;
+      totalRaces: number;
+      overallRank: number | null;
+    }
+  >;
+  avatarUrls: Record<string, string>;
 }
+
+export interface IDriversLeaderboardPresenter
+  extends Presenter<DriversLeaderboardResultDTO, DriversLeaderboardViewModel> {}

packages/racing/application/presenters/ILeagueDriverSeasonStatsPresenter.ts

@@ -1,3 +1,5 @@
+import type { Presenter } from '@gridpilot/shared/presentation';
+
 export interface LeagueDriverSeasonStatsItemViewModel {
   leagueId: string;
   driverId: string;
@@ -24,18 +26,18 @@ export interface LeagueDriverSeasonStatsViewModel {
   stats: LeagueDriverSeasonStatsItemViewModel[];
 }
 
-export interface ILeagueDriverSeasonStatsPresenter {
+export interface LeagueDriverSeasonStatsResultDTO {
-  present(
+  leagueId: string;
-    leagueId: string,
+  standings: Array<{
-    standings: Array<{
+    driverId: string;
-      driverId: string;
+    position: number;
-      position: number;
+    points: number;
-      points: number;
+    racesCompleted: number;
-      racesCompleted: number;
+  }>;
-    }>,
+  penalties: Map<string, { baseDelta: number; bonusDelta: number }>;
-    penalties: Map<string, { baseDelta: number; bonusDelta: number }>,
+  driverResults: Map<string, Array<{ position: number }>>;
-    driverResults: Map<string, Array<{ position: number }>>,
+  driverRatings: Map<string, { rating: number | null; ratingChange: number | null }>;
-    driverRatings: Map<string, { rating: number | null; ratingChange: number | null }>
-  ): LeagueDriverSeasonStatsViewModel;
-  getViewModel(): LeagueDriverSeasonStatsViewModel;
 }
+
+export interface ILeagueDriverSeasonStatsPresenter
+  extends Presenter<LeagueDriverSeasonStatsResultDTO, LeagueDriverSeasonStatsViewModel> {}

packages/racing/application/presenters/ILeagueScoringConfigPresenter.ts

@@ -1,5 +1,6 @@
 import type { ChampionshipConfig } from '../../domain/types/ChampionshipConfig';
 import type { LeagueScoringPresetDTO } from '../ports/LeagueScoringPresetProvider';
+import type { Presenter } from '@gridpilot/shared/presentation';
 
 export interface LeagueScoringChampionshipViewModel {
   id: string;
@@ -32,7 +33,5 @@ export interface LeagueScoringConfigData {
   championships: ChampionshipConfig[];
 }
 
-export interface ILeagueScoringConfigPresenter {
+export interface ILeagueScoringConfigPresenter
-  present(data: LeagueScoringConfigData): LeagueScoringConfigViewModel;
+  extends Presenter<LeagueScoringConfigData, LeagueScoringConfigViewModel> {}
-  getViewModel(): LeagueScoringConfigViewModel;
-}

packages/racing/application/presenters/IRaceDetailPresenter.ts

@@ -1,4 +1,5 @@
 import type { SessionType, RaceStatus } from '../../domain/entities/Race';
+import type { Presenter } from '@gridpilot/shared/presentation';
 
 export interface RaceDetailEntryViewModel {
   id: string;
@@ -55,7 +56,5 @@ export interface RaceDetailViewModel {
   error?: string;
 }
 
-export interface IRaceDetailPresenter {
+export interface IRaceDetailPresenter
-  present(viewModel: RaceDetailViewModel): RaceDetailViewModel;
+  extends Presenter<RaceDetailViewModel, RaceDetailViewModel> {}
-  getViewModel(): RaceDetailViewModel | null;
-}

packages/racing/application/presenters/IRacePenaltiesPresenter.ts

@@ -1,4 +1,4 @@
-import type { PenaltyType, PenaltyStatus } from '../../domain/entities/Penalty';
+import type { Penalty, PenaltyType, PenaltyStatus } from '../../domain/entities/Penalty';
 import type { Presenter } from '@gridpilot/shared/presentation/Presenter';
 
 export interface RacePenaltyViewModel {
@@ -24,21 +24,7 @@ export interface RacePenaltiesViewModel {
 }
 
 export interface RacePenaltiesResultDTO {
-  penalties: Array<{
+  penalties: Penalty[];
-    id: string;
-    raceId: string;
-    driverId: string;
-    type: PenaltyType;
-    value?: number;
-    reason: string;
-    protestId?: string;
-    issuedBy: string;
-    status: PenaltyStatus;
-    issuedAt: Date;
-    appliedAt?: Date;
-    notes?: string;
-    getDescription(): string;
-  }>;
   driverMap: Map<string, string>;
 }
 

packages/racing/application/presenters/IRaceProtestsPresenter.ts

@@ -1,4 +1,4 @@
-import type { ProtestStatus, ProtestIncident } from '../../domain/entities/Protest';
+import type { Protest, ProtestStatus, ProtestIncident } from '../../domain/entities/Protest';
 import type { Presenter } from '@gridpilot/shared/presentation/Presenter';
 
 export interface RaceProtestViewModel {
@@ -24,20 +24,7 @@ export interface RaceProtestsViewModel {
 }
 
 export interface RaceProtestsResultDTO {
-  protests: Array<{
+  protests: Protest[];
-    id: string;
-    raceId: string;
-    protestingDriverId: string;
-    accusedDriverId: string;
-    incident: ProtestIncident;
-    comment?: string;
-    proofVideoUrl?: string;
-    status: ProtestStatus;
-    reviewedBy?: string;
-    decisionNotes?: string;
-    filedAt: Date;
-    reviewedAt?: Date;
-  }>;
   driverMap: Map<string, string>;
 }
 

packages/racing/application/presenters/IRaceRegistrationsPresenter.ts

@@ -1,9 +1,13 @@
+import type { Presenter } from '@gridpilot/shared/presentation';
+
 export interface RaceRegistrationsViewModel {
   registeredDriverIds: string[];
   count: number;
 }
 
-export interface IRaceRegistrationsPresenter {
+export interface RaceRegistrationsResultDTO {
-  present(registeredDriverIds: string[]): RaceRegistrationsViewModel;
+  registeredDriverIds: string[];
-  getViewModel(): RaceRegistrationsViewModel;
 }
+
+export interface IRaceRegistrationsPresenter
+  extends Presenter<RaceRegistrationsResultDTO, RaceRegistrationsViewModel> {}

packages/racing/application/presenters/IRaceResultsDetailPresenter.ts

@@ -2,6 +2,7 @@ import type { RaceStatus } from '../../domain/entities/Race';
 import type { Result } from '../../domain/entities/Result';
 import type { Driver } from '../../domain/entities/Driver';
 import type { PenaltyType } from '../../domain/entities/Penalty';
+import type { Presenter } from '@gridpilot/shared/presentation';
 
 export interface RaceResultsHeaderViewModel {
   id: string;
@@ -28,13 +29,11 @@ export interface RaceResultsDetailViewModel {
   results: Result[];
   drivers: Driver[];
   penalties: RaceResultsPenaltySummaryViewModel[];
-  pointsSystem: Record<number, number>;
+  pointsSystem?: Record<number, number>;
   fastestLapTime?: number;
   currentDriverId?: string;
   error?: string;
 }
 
-export interface IRaceResultsDetailPresenter {
+export interface IRaceResultsDetailPresenter
-  present(viewModel: RaceResultsDetailViewModel): RaceResultsDetailViewModel;
+  extends Presenter<RaceResultsDetailViewModel, RaceResultsDetailViewModel> {}
-  getViewModel(): RaceResultsDetailViewModel | null;
-}

packages/racing/application/presenters/IRaceWithSOFPresenter.ts

@@ -1,3 +1,5 @@
+import type { Presenter } from '@gridpilot/shared/presentation';
+
 export interface RaceWithSOFViewModel {
   id: string;
   leagueId: string;
@@ -14,21 +16,21 @@ export interface RaceWithSOFViewModel {
   participantCount: number;
 }
 
-export interface IRaceWithSOFPresenter {
+export interface RaceWithSOFResultDTO {
-  present(
+  raceId: string;
-    raceId: string,
+  leagueId: string;
-    leagueId: string,
+  scheduledAt: Date;
-    scheduledAt: Date,
+  track: string;
-    track: string,
+  trackId: string;
-    trackId: string,
+  car: string;
-    car: string,
+  carId: string;
-    carId: string,
+  sessionType: string;
-    sessionType: string,
+  status: string;
-    status: string,
+  strengthOfField: number | null;
-    strengthOfField: number | null,
+  registeredCount: number;
-    registeredCount: number,
+  maxParticipants: number;
-    maxParticipants: number,
+  participantCount: number;
-    participantCount: number
-  ): RaceWithSOFViewModel;
-  getViewModel(): RaceWithSOFViewModel;
 }
+
+export interface IRaceWithSOFPresenter
+  extends Presenter<RaceWithSOFResultDTO, RaceWithSOFViewModel> {}

packages/racing/application/presenters/IRacesPagePresenter.ts

@@ -1,3 +1,5 @@
+import type { Presenter } from '@gridpilot/shared/presentation';
+
 export interface RaceListItemViewModel {
   id: string;
   track: string;
@@ -25,7 +27,9 @@ export interface RacesPageViewModel {
   recentResults: RaceListItemViewModel[];
 }
 
-export interface IRacesPagePresenter {
+export interface RacesPageResultDTO {
-  present(races: any[]): void;
+  races: any[];
-  getViewModel(): RacesPageViewModel;
 }
+
+export interface IRacesPagePresenter
+  extends Presenter<RacesPageResultDTO, RacesPageViewModel> {}

packages/racing/application/presenters/ISponsorDashboardPresenter.ts

@@ -1,5 +1,7 @@
-import type { SponsoredLeagueDTO, SponsorDashboardDTO } from '../use-cases/GetSponsorDashboardUseCase';
+import type { SponsorDashboardDTO } from '../use-cases/GetSponsorDashboardUseCase';
+import type { Presenter } from '@gridpilot/shared/presentation';
 
-export interface ISponsorDashboardPresenter {
+export type SponsorDashboardViewModel = SponsorDashboardDTO | null;
-  present(data: SponsorDashboardDTO | null): void;
+
-}
+export interface ISponsorDashboardPresenter
+  extends Presenter<SponsorDashboardDTO | null, SponsorDashboardViewModel> {}

packages/racing/application/presenters/ISponsorSponsorshipsPresenter.ts

@@ -1,5 +1,7 @@
 import type { SponsorSponsorshipsDTO } from '../use-cases/GetSponsorSponsorshipsUseCase';
+import type { Presenter } from '@gridpilot/shared/presentation';
 
-export interface ISponsorSponsorshipsPresenter {
+export type SponsorSponsorshipsViewModel = SponsorSponsorshipsDTO | null;
-  present(data: SponsorSponsorshipsDTO | null): void;
+
-}
+export interface ISponsorSponsorshipsPresenter
+  extends Presenter<SponsorSponsorshipsDTO | null, SponsorSponsorshipsViewModel> {}

packages/racing/application/presenters/ITeamDetailsPresenter.ts

@@ -1,5 +1,6 @@
 import type { Team } from '../../domain/entities/Team';
 import type { TeamMembership } from '../../domain/types/TeamMembership';
+import type { Presenter } from '@gridpilot/shared/presentation';
 
 export interface TeamDetailsViewModel {
   team: {
@@ -9,9 +10,7 @@ export interface TeamDetailsViewModel {
     description: string;
     ownerId: string;
     leagues: string[];
-    specialization?: 'endurance' | 'sprint' | 'mixed';
+    createdAt: string;
-    region?: string;
-    languages?: string[];
   };
   membership: {
     role: 'owner' | 'manager' | 'member';
@@ -21,10 +20,11 @@ export interface TeamDetailsViewModel {
   canManage: boolean;
 }
 
-export interface ITeamDetailsPresenter {
+export interface TeamDetailsResultDTO {
-  present(
+  team: Team;
-    team: Team,
+  membership: TeamMembership | null;
-    membership: TeamMembership | null,
+  driverId: string;
-    driverId: string
-  ): TeamDetailsViewModel;
 }
+
+export interface ITeamDetailsPresenter
+  extends Presenter<TeamDetailsResultDTO, TeamDetailsViewModel> {}

packages/racing/application/use-cases/CreateTeamUseCase.ts

@@ -27,15 +27,14 @@ export class CreateTeamUseCase {
       throw new Error('Driver already belongs to a team');
     }
 
-    const team: Team = {
+    const team = Team.create({
       id: `team-${Date.now()}`,
       name,
       tag,
       description,
       ownerId,
       leagues,
-      createdAt: new Date(),
+    });
-    };
 
     const createdTeam = await this.teamRepository.create(team);
 

packages/racing/application/use-cases/GetAllLeaguesWithCapacityAndScoringUseCase.ts

@@ -4,15 +4,25 @@ import type { ISeasonRepository } from '../../domain/repositories/ISeasonReposit
 import type { ILeagueScoringConfigRepository } from '../../domain/repositories/ILeagueScoringConfigRepository';
 import type { IGameRepository } from '../../domain/repositories/IGameRepository';
 import type { LeagueScoringPresetProvider } from '../ports/LeagueScoringPresetProvider';
-import type { IAllLeaguesWithCapacityAndScoringPresenter, LeagueEnrichedData } from '../presenters/IAllLeaguesWithCapacityAndScoringPresenter';
+import type {
-import type { AsyncUseCase } from '@gridpilot/shared/application';
+  AllLeaguesWithCapacityAndScoringViewModel,
+  IAllLeaguesWithCapacityAndScoringPresenter,
+  LeagueEnrichedData,
+} from '../presenters/IAllLeaguesWithCapacityAndScoringPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 /**
  * Use Case for retrieving all leagues with capacity and scoring information.
  * Orchestrates domain logic and delegates presentation to the presenter.
  */
 export class GetAllLeaguesWithCapacityAndScoringUseCase
-  implements AsyncUseCase<void, void>
+  implements
+    UseCase<
+      void,
+      LeagueEnrichedData[],
+      AllLeaguesWithCapacityAndScoringViewModel,
+      IAllLeaguesWithCapacityAndScoringPresenter
+    >
 {
   constructor(
     private readonly leagueRepository: ILeagueRepository,
@@ -21,10 +31,14 @@ export class GetAllLeaguesWithCapacityAndScoringUseCase
     private readonly leagueScoringConfigRepository: ILeagueScoringConfigRepository,
     private readonly gameRepository: IGameRepository,
     private readonly presetProvider: LeagueScoringPresetProvider,
-    public readonly presenter: IAllLeaguesWithCapacityAndScoringPresenter,
   ) {}
 
-  async execute(): Promise<void> {
+  async execute(
+    _input: void,
+    presenter: IAllLeaguesWithCapacityAndScoringPresenter,
+  ): Promise<void> {
+    presenter.reset();
+
     const leagues = await this.leagueRepository.findAll();
 
     const enrichedLeagues: LeagueEnrichedData[] = [];
@@ -42,18 +56,22 @@ export class GetAllLeaguesWithCapacityAndScoringUseCase
       ).length;
 
       const seasons = await this.seasonRepository.findByLeagueId(league.id);
-      const activeSeason = seasons && seasons.length > 0
+      const activeSeason =
-        ? seasons.find((s) => s.status === 'active') ?? seasons[0]
+        seasons && seasons.length > 0
-        : undefined;
+          ? seasons.find((s) => s.status === 'active') ?? seasons[0]
+          : undefined;
 
       let scoringConfig: LeagueEnrichedData['scoringConfig'];
       let game: LeagueEnrichedData['game'];
       let preset: LeagueEnrichedData['preset'];
 
       if (activeSeason) {
-        scoringConfig = await this.leagueScoringConfigRepository.findBySeasonId(activeSeason.id);
+        const scoringConfigResult =
+          await this.leagueScoringConfigRepository.findBySeasonId(activeSeason.id);
+        scoringConfig = scoringConfigResult ?? undefined;
         if (scoringConfig) {
-          game = await this.gameRepository.findById(activeSeason.gameId);
+          const gameResult = await this.gameRepository.findById(activeSeason.gameId);
+          game = gameResult ?? undefined;
           const presetId = scoringConfig.scoringPresetId;
           if (presetId) {
             preset = this.presetProvider.getPresetById(presetId);
@@ -64,13 +82,13 @@ export class GetAllLeaguesWithCapacityAndScoringUseCase
       enrichedLeagues.push({
         league,
         usedDriverSlots,
-        season: activeSeason,
+        ...(activeSeason ? { season: activeSeason } : {}),
-        ...(scoringConfig ?? undefined ? { scoringConfig } : {}),
+        ...(scoringConfig ? { scoringConfig } : {}),
-        ...(game ?? undefined ? { game } : {}),
+        ...(game ? { game } : {}),
-        ...(preset ?? undefined ? { preset } : {}),
+        ...(preset ? { preset } : {}),
       });
     }
 
-    this.presenter.present(enrichedLeagues);
+    presenter.present(enrichedLeagues);
   }
 }

packages/racing/application/use-cases/GetAllLeaguesWithCapacityUseCase.ts

@@ -1,22 +1,30 @@
 import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
 import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
-import type { IAllLeaguesWithCapacityPresenter } from '../presenters/IAllLeaguesWithCapacityPresenter';
+import type {
-import type { AsyncUseCase } from '@gridpilot/shared/application';
+  IAllLeaguesWithCapacityPresenter,
+  AllLeaguesWithCapacityResultDTO,
+  AllLeaguesWithCapacityViewModel,
+} from '../presenters/IAllLeaguesWithCapacityPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 /**
  * Use Case for retrieving all leagues with capacity information.
  * Orchestrates domain logic and delegates presentation to the presenter.
  */
 export class GetAllLeaguesWithCapacityUseCase
-  implements AsyncUseCase<void, void>
+  implements UseCase<void, AllLeaguesWithCapacityResultDTO, AllLeaguesWithCapacityViewModel, IAllLeaguesWithCapacityPresenter>
 {
   constructor(
     private readonly leagueRepository: ILeagueRepository,
     private readonly leagueMembershipRepository: ILeagueMembershipRepository,
-    public readonly presenter: IAllLeaguesWithCapacityPresenter,
   ) {}
 
-  async execute(): Promise<void> {
+  async execute(
+    _input: void,
+    presenter: IAllLeaguesWithCapacityPresenter,
+  ): Promise<void> {
+    presenter.reset();
+
     const leagues = await this.leagueRepository.findAll();
 
     const memberCounts = new Map<string, number>();
@@ -36,6 +44,11 @@ export class GetAllLeaguesWithCapacityUseCase
       memberCounts.set(league.id, usedSlots);
     }
 
-    this.presenter.present(leagues, memberCounts);
+    const dto: AllLeaguesWithCapacityResultDTO = {
+      leagues,
+      memberCounts,
+    };
+
+    presenter.present(dto);
   }
 }

packages/racing/application/use-cases/GetAllRacesPageDataUseCase.ts

@@ -2,21 +2,21 @@ import type { IRaceRepository } from '../../domain/repositories/IRaceRepository'
 import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
 import type {
   IAllRacesPagePresenter,
+  AllRacesPageResultDTO,
   AllRacesPageViewModel,
   AllRacesListItemViewModel,
   AllRacesFilterOptionsViewModel,
 } from '../presenters/IAllRacesPagePresenter';
-import type { AsyncUseCase } from '@gridpilot/shared/application';
+import type { UseCase } from '@gridpilot/shared/application';
 
 export class GetAllRacesPageDataUseCase
-  implements AsyncUseCase<void, void> {
+  implements UseCase<void, AllRacesPageResultDTO, AllRacesPageViewModel, IAllRacesPagePresenter> {
   constructor(
     private readonly raceRepository: IRaceRepository,
     private readonly leagueRepository: ILeagueRepository,
-    public readonly presenter: IAllRacesPagePresenter,
   ) {}
 
-  async execute(): Promise<void> {
+  async execute(_input: void, presenter: IAllRacesPagePresenter): Promise<void> {
     const [allRaces, allLeagues] = await Promise.all([
       this.raceRepository.findAll(),
       this.leagueRepository.findAll(),
@@ -59,6 +59,7 @@ export class GetAllRacesPageDataUseCase
       filters,
     };
 
-    this.presenter.present(viewModel);
+    presenter.reset();
+    presenter.present(viewModel);
   }
 }

packages/racing/application/use-cases/GetAllTeamsUseCase.ts

@@ -24,11 +24,17 @@ export class GetAllTeamsUseCase
 
     const teams = await this.teamRepository.findAll();
 
-    const enrichedTeams: Array<Team & { memberCount: number }> = await Promise.all(
+    const enrichedTeams: AllTeamsResultDTO['teams'] = await Promise.all(
       teams.map(async (team) => {
         const memberCount = await this.teamMembershipRepository.countByTeamId(team.id);
         return {
-          ...team,
+          id: team.id,
+          name: team.name,
+          tag: team.tag,
+          description: team.description,
+          ownerId: team.ownerId,
+          leagues: [...team.leagues],
+          createdAt: team.createdAt,
           memberCount,
         };
       }),

packages/racing/application/use-cases/GetDashboardOverviewUseCase.ts

@@ -8,7 +8,6 @@ import type { IRaceRegistrationRepository } from '../../domain/repositories/IRac
 import type { IImageServicePort } from '../ports/IImageServicePort';
 import type { IFeedRepository } from '@gridpilot/social/domain/repositories/IFeedRepository';
 import type { ISocialGraphRepository } from '@gridpilot/social/domain/repositories/ISocialGraphRepository';
-import type { AsyncUseCase } from '@gridpilot/shared/application';
 import type {
   IDashboardOverviewPresenter,
   DashboardOverviewViewModel,
@@ -34,8 +33,7 @@ export interface GetDashboardOverviewParams {
   driverId: string;
 }
 
-export class GetDashboardOverviewUseCase
+export class GetDashboardOverviewUseCase {
-  implements AsyncUseCase<GetDashboardOverviewParams, void> {
   constructor(
     private readonly driverRepository: IDriverRepository,
     private readonly raceRepository: IRaceRepository,
@@ -48,10 +46,9 @@ export class GetDashboardOverviewUseCase
     private readonly socialRepository: ISocialGraphRepository,
     private readonly imageService: IImageServicePort,
     private readonly getDriverStats: (driverId: string) => DashboardDriverStatsAdapter | null,
-    public readonly presenter: IDashboardOverviewPresenter,
   ) {}
 
-  async execute(params: GetDashboardOverviewParams): Promise<void> {
+  async execute(params: GetDashboardOverviewParams, presenter: IDashboardOverviewPresenter): Promise<void> {
     const { driverId } = params;
 
     const [driver, allLeagues, allRaces, allResults, feedItems, friends] = await Promise.all([
@@ -137,7 +134,8 @@ export class GetDashboardOverviewUseCase
       friends: friendsSummary,
     };
 
-    this.presenter.present(viewModel);
+    presenter.reset();
+    presenter.present(viewModel);
   }
 
   private async getDriverLeagues(allLeagues: any[], driverId: string): Promise<any[]> {

packages/racing/application/use-cases/GetDriversLeaderboardUseCase.ts

@@ -2,29 +2,35 @@ import type { IDriverRepository } from '../../domain/repositories/IDriverReposit
 import type { IRankingService } from '../../domain/services/IRankingService';
 import type { IDriverStatsService } from '../../domain/services/IDriverStatsService';
 import type { IImageServicePort } from '../ports/IImageServicePort';
-import type { IDriversLeaderboardPresenter } from '../presenters/IDriversLeaderboardPresenter';
+import type {
-import type { AsyncUseCase } from '@gridpilot/shared/application';
+  IDriversLeaderboardPresenter,
+  DriversLeaderboardResultDTO,
+  DriversLeaderboardViewModel,
+} from '../presenters/IDriversLeaderboardPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 /**
  * Use Case for retrieving driver leaderboard data.
  * Orchestrates domain logic and delegates presentation to the presenter.
  */
 export class GetDriversLeaderboardUseCase
-  implements AsyncUseCase<void, void> {
+  implements UseCase<void, DriversLeaderboardResultDTO, DriversLeaderboardViewModel, IDriversLeaderboardPresenter>
+{
   constructor(
     private readonly driverRepository: IDriverRepository,
     private readonly rankingService: IRankingService,
     private readonly driverStatsService: IDriverStatsService,
     private readonly imageService: IImageServicePort,
-    public readonly presenter: IDriversLeaderboardPresenter,
   ) {}
 
-  async execute(): Promise<void> {
+  async execute(_input: void, presenter: IDriversLeaderboardPresenter): Promise<void> {
+    presenter.reset();
+
     const drivers = await this.driverRepository.findAll();
     const rankings = this.rankingService.getAllDriverRankings();
 
-    const stats: Record<string, any> = {};
+    const stats: DriversLeaderboardResultDTO['stats'] = {};
-    const avatarUrls: Record<string, string> = {};
+    const avatarUrls: DriversLeaderboardResultDTO['avatarUrls'] = {};
 
     for (const driver of drivers) {
       const driverStats = this.driverStatsService.getDriverStats(driver.id);
@@ -34,6 +40,13 @@ export class GetDriversLeaderboardUseCase
       avatarUrls[driver.id] = this.imageService.getDriverAvatar(driver.id);
     }
 
-    this.presenter.present(drivers, rankings, stats, avatarUrls);
+    const dto: DriversLeaderboardResultDTO = {
+      drivers,
+      rankings,
+      stats,
+      avatarUrls,
+    };
+
+    presenter.present(dto);
   }
 }

packages/racing/application/use-cases/GetLeagueDriverSeasonStatsUseCase.ts

@@ -2,8 +2,12 @@ import type { IStandingRepository } from '../../domain/repositories/IStandingRep
 import type { IResultRepository } from '../../domain/repositories/IResultRepository';
 import type { IPenaltyRepository } from '../../domain/repositories/IPenaltyRepository';
 import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
-import type { ILeagueDriverSeasonStatsPresenter } from '../presenters/ILeagueDriverSeasonStatsPresenter';
+import type {
-import type { AsyncUseCase } from '@gridpilot/shared/application';
+  ILeagueDriverSeasonStatsPresenter,
+  LeagueDriverSeasonStatsResultDTO,
+  LeagueDriverSeasonStatsViewModel,
+} from '../presenters/ILeagueDriverSeasonStatsPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 export interface DriverRatingPort {
   getRating(driverId: string): { rating: number | null; ratingChange: number | null };
@@ -18,17 +22,27 @@ export interface GetLeagueDriverSeasonStatsUseCaseParams {
  * Orchestrates domain logic and delegates presentation to the presenter.
  */
 export class GetLeagueDriverSeasonStatsUseCase
-  implements AsyncUseCase<GetLeagueDriverSeasonStatsUseCaseParams, void> {
+  implements
+    UseCase<
+      GetLeagueDriverSeasonStatsUseCaseParams,
+      LeagueDriverSeasonStatsResultDTO,
+      LeagueDriverSeasonStatsViewModel,
+      ILeagueDriverSeasonStatsPresenter
+    >
+{
   constructor(
     private readonly standingRepository: IStandingRepository,
     private readonly resultRepository: IResultRepository,
     private readonly penaltyRepository: IPenaltyRepository,
     private readonly raceRepository: IRaceRepository,
     private readonly driverRatingPort: DriverRatingPort,
-    public readonly presenter: ILeagueDriverSeasonStatsPresenter,
   ) {}
 
-  async execute(params: GetLeagueDriverSeasonStatsUseCaseParams): Promise<void> {
+  async execute(
+    params: GetLeagueDriverSeasonStatsUseCaseParams,
+    presenter: ILeagueDriverSeasonStatsPresenter,
+  ): Promise<void> {
+    presenter.reset();
     const { leagueId } = params;
 
     // Get standings and races for the league
@@ -70,16 +84,26 @@ export class GetLeagueDriverSeasonStatsUseCase
     // Collect driver results
     const driverResults = new Map<string, Array<{ position: number }>>();
     for (const standing of standings) {
-      const results = await this.resultRepository.findByDriverIdAndLeagueId(standing.driverId, leagueId);
+      const results = await this.resultRepository.findByDriverIdAndLeagueId(
+        standing.driverId,
+        leagueId,
+      );
       driverResults.set(standing.driverId, results);
     }
 
-    this.presenter.present(
+    const dto: LeagueDriverSeasonStatsResultDTO = {
       leagueId,
-      standings,
+      standings: standings.map(standing => ({
-      penaltiesByDriver,
+        driverId: standing.driverId,
+        position: standing.position,
+        points: standing.points,
+        racesCompleted: standing.racesCompleted,
+      })),
+      penalties: penaltiesByDriver,
       driverResults,
-      driverRatings
+      driverRatings,
-    );
+    };
+
+    presenter.present(dto);
   }
 }

packages/racing/application/use-cases/GetLeagueFullConfigUseCase.ts

@@ -49,9 +49,9 @@ export class GetLeagueFullConfigUseCase
 
     const data: LeagueFullConfigData = {
       league,
-      activeSeason,
+      ...(activeSeason ? { activeSeason } : {}),
-      ...(scoringConfig ?? undefined ? { scoringConfig } : {}),
+      ...(scoringConfig ? { scoringConfig } : {}),
-      ...(game ?? undefined ? { game } : {}),
+      ...(game ? { game } : {}),
     };
 
     presenter.reset();

packages/racing/application/use-cases/GetLeagueScoringConfigUseCase.ts

@@ -3,25 +3,29 @@ import type { ISeasonRepository } from '../../domain/repositories/ISeasonReposit
 import type { ILeagueScoringConfigRepository } from '../../domain/repositories/ILeagueScoringConfigRepository';
 import type { IGameRepository } from '../../domain/repositories/IGameRepository';
 import type { LeagueScoringPresetProvider } from '../ports/LeagueScoringPresetProvider';
-import type { ILeagueScoringConfigPresenter, LeagueScoringConfigData } from '../presenters/ILeagueScoringConfigPresenter';
+import type {
-import type { AsyncUseCase } from '@gridpilot/shared/application';
+  ILeagueScoringConfigPresenter,
+  LeagueScoringConfigData,
+  LeagueScoringConfigViewModel,
+} from '../presenters/ILeagueScoringConfigPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 /**
  * Use Case for retrieving a league's scoring configuration for its active season.
  * Orchestrates domain logic and delegates presentation to the presenter.
  */
 export class GetLeagueScoringConfigUseCase
-  implements AsyncUseCase<{ leagueId: string }, void> {
+  implements UseCase<{ leagueId: string }, LeagueScoringConfigData, LeagueScoringConfigViewModel, ILeagueScoringConfigPresenter>
+{
   constructor(
     private readonly leagueRepository: ILeagueRepository,
     private readonly seasonRepository: ISeasonRepository,
     private readonly leagueScoringConfigRepository: ILeagueScoringConfigRepository,
     private readonly gameRepository: IGameRepository,
     private readonly presetProvider: LeagueScoringPresetProvider,
-    public readonly presenter: ILeagueScoringConfigPresenter,
   ) {}
 
-  async execute(params: { leagueId: string }): Promise<void> {
+  async execute(params: { leagueId: string }, presenter: ILeagueScoringConfigPresenter): Promise<void> {
     const { leagueId } = params;
 
     const league = await this.leagueRepository.findById(leagueId);
@@ -65,6 +69,7 @@ export class GetLeagueScoringConfigUseCase
       championships: scoringConfig.championships,
     };
 
-    this.presenter.present(data);
+    presenter.reset();
+    presenter.present(data);
   }
 }

packages/racing/application/use-cases/GetRaceDetailUseCase.ts

@@ -14,6 +14,7 @@ import type {
   RaceDetailEntryViewModel,
   RaceDetailUserResultViewModel,
 } from '../presenters/IRaceDetailPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 /**
  * Use Case: GetRaceDetailUseCase
@@ -30,7 +31,9 @@ export interface GetRaceDetailQueryParams {
   driverId: string;
 }
 
-export class GetRaceDetailUseCase {
+export class GetRaceDetailUseCase
+  implements UseCase<GetRaceDetailQueryParams, RaceDetailViewModel, RaceDetailViewModel, IRaceDetailPresenter>
+{
   constructor(
     private readonly raceRepository: IRaceRepository,
     private readonly leagueRepository: ILeagueRepository,
@@ -40,10 +43,11 @@ export class GetRaceDetailUseCase {
     private readonly leagueMembershipRepository: ILeagueMembershipRepository,
     private readonly driverRatingProvider: DriverRatingProvider,
     private readonly imageService: IImageServicePort,
-    public readonly presenter: IRaceDetailPresenter,
   ) {}
 
-  async execute(params: GetRaceDetailQueryParams): Promise<void> {
+  async execute(params: GetRaceDetailQueryParams, presenter: IRaceDetailPresenter): Promise<void> {
+    presenter.reset();
+
     const { raceId, driverId } = params;
 
     const race = await this.raceRepository.findById(raceId);
@@ -59,7 +63,7 @@ export class GetRaceDetailUseCase {
         userResult: null,
         error: 'Race not found',
       };
-      this.presenter.present(emptyViewModel);
+      presenter.present(emptyViewModel);
       return;
     }
 
@@ -121,8 +125,8 @@ export class GetRaceDetailUseCase {
       sessionType: race.sessionType,
       status: race.status,
       strengthOfField: race.strengthOfField ?? null,
-      registeredCount: race.registeredCount,
+      ...(race.registeredCount !== undefined ? { registeredCount: race.registeredCount } : {}),
-      maxParticipants: race.maxParticipants,
+      ...(race.maxParticipants !== undefined ? { maxParticipants: race.maxParticipants } : {}),
     };
 
     const leagueView: RaceDetailLeagueViewModel | null = league
@@ -131,8 +135,12 @@ export class GetRaceDetailUseCase {
           name: league.name,
           description: league.description,
           settings: {
-            maxDrivers: league.settings.maxDrivers,
+            ...(league.settings.maxDrivers !== undefined
-            qualifyingFormat: league.settings.qualifyingFormat,
+              ? { maxDrivers: league.settings.maxDrivers }
+              : {}),
+            ...(league.settings.qualifyingFormat !== undefined
+              ? { qualifyingFormat: league.settings.qualifyingFormat }
+              : {}),
           },
         }
       : null;
@@ -148,7 +156,7 @@ export class GetRaceDetailUseCase {
       userResult: userResultView,
     };
 
-    this.presenter.present(viewModel);
+    presenter.present(viewModel);
   }
 
   private calculateRatingChange(position: number): number {

packages/racing/application/use-cases/GetRaceRegistrationsUseCase.ts

@@ -1,6 +1,11 @@
 import type { IRaceRegistrationRepository } from '@gridpilot/racing/domain/repositories/IRaceRegistrationRepository';
 import type { GetRaceRegistrationsQueryParamsDTO } from '../dto/RaceRegistrationQueryDTO';
-import type { IRaceRegistrationsPresenter } from '../presenters/IRaceRegistrationsPresenter';
+import type {
+  IRaceRegistrationsPresenter,
+  RaceRegistrationsResultDTO,
+  RaceRegistrationsViewModel,
+} from '../presenters/IRaceRegistrationsPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 /**
  * Use Case: GetRaceRegistrationsUseCase
@@ -8,15 +13,26 @@ import type { IRaceRegistrationsPresenter } from '../presenters/IRaceRegistratio
  * Returns registered driver IDs for a race.
  * Orchestrates domain logic and delegates presentation to the presenter.
  */
-export class GetRaceRegistrationsUseCase {
+export class GetRaceRegistrationsUseCase
+  implements UseCase<GetRaceRegistrationsQueryParamsDTO, RaceRegistrationsResultDTO, RaceRegistrationsViewModel, IRaceRegistrationsPresenter>
+{
   constructor(
     private readonly registrationRepository: IRaceRegistrationRepository,
-    public readonly presenter: IRaceRegistrationsPresenter,
   ) {}
 
-  async execute(params: GetRaceRegistrationsQueryParamsDTO): Promise<void> {
+  async execute(
+    params: GetRaceRegistrationsQueryParamsDTO,
+    presenter: IRaceRegistrationsPresenter,
+  ): Promise<void> {
+    presenter.reset();
+
     const { raceId } = params;
     const registeredDriverIds = await this.registrationRepository.getRegisteredDrivers(raceId);
-    this.presenter.present(registeredDriverIds);
+
+    const dto: RaceRegistrationsResultDTO = {
+      registeredDriverIds,
+    };
+
+    presenter.present(dto);
   }
 }

packages/racing/application/use-cases/GetRaceResultsDetailUseCase.ts

@@ -8,6 +8,7 @@ import type {
   RaceResultsDetailViewModel,
   RaceResultsPenaltySummaryViewModel,
 } from '../presenters/IRaceResultsDetailPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 import type { League } from '../../domain/entities/League';
 import type { Result } from '../../domain/entities/Result';
 import type { Driver } from '../../domain/entities/Driver';
@@ -18,8 +19,8 @@ export interface GetRaceResultsDetailParams {
   driverId?: string;
 }
 
-function buildPointsSystem(league: League | null): Record<number, number> {
+function buildPointsSystem(league: League | null): Record<number, number> | undefined {
-  if (!league) return {};
+  if (!league) return undefined;
 
   const pointsSystems: Record<string, Record<number, number>> = {
     'f1-2024': {
@@ -53,11 +54,17 @@ function buildPointsSystem(league: League | null): Record<number, number> {
     },
   };
 
-  return (
+  const customPoints = league.settings.customPoints;
-    league.settings.customPoints ||
+  if (customPoints) {
-    pointsSystems[league.settings.pointsSystem] ||
+    return customPoints;
-    pointsSystems['f1-2024']
+  }
-  );
+
+  const preset = pointsSystems[league.settings.pointsSystem];
+  if (preset) {
+    return preset;
+  }
+
+  return pointsSystems['f1-2024'];
 }
 
 function getFastestLapTime(results: Result[]): number | undefined {
@@ -73,17 +80,28 @@ function mapPenaltySummary(penalties: Penalty[]): RaceResultsPenaltySummaryViewM
   }));
 }
 
-export class GetRaceResultsDetailUseCase {
+export class GetRaceResultsDetailUseCase
+  implements
+    UseCase<
+      GetRaceResultsDetailParams,
+      RaceResultsDetailViewModel,
+      RaceResultsDetailViewModel,
+      IRaceResultsDetailPresenter
+    >
+{
   constructor(
     private readonly raceRepository: IRaceRepository,
     private readonly leagueRepository: ILeagueRepository,
     private readonly resultRepository: IResultRepository,
     private readonly driverRepository: IDriverRepository,
     private readonly penaltyRepository: IPenaltyRepository,
-    public readonly presenter: IRaceResultsDetailPresenter,
   ) {}
 
-  async execute(params: GetRaceResultsDetailParams): Promise<void> {
+  async execute(
+    params: GetRaceResultsDetailParams,
+    presenter: IRaceResultsDetailPresenter,
+  ): Promise<void> {
+    presenter.reset();
     const { raceId, driverId } = params;
 
     const race = await this.raceRepository.findById(raceId);
@@ -95,11 +113,10 @@ export class GetRaceResultsDetailUseCase {
         results: [],
         drivers: [],
         penalties: [],
-        pointsSystem: {},
+        ...(driverId ? { currentDriverId: driverId } : {}),
-        currentDriverId: driverId,
         error: 'Race not found',
       };
-      this.presenter.present(errorViewModel);
+      presenter.present(errorViewModel);
       return;
     }
 
@@ -111,7 +128,7 @@ export class GetRaceResultsDetailUseCase {
     ]);
 
     const effectiveCurrentDriverId =
-      driverId || (drivers.length > 0 ? drivers[0]!.id : undefined);
+      driverId ?? (drivers.length > 0 ? drivers[0]!.id : undefined);
 
     const pointsSystem = buildPointsSystem(league as League | null);
     const fastestLapTime = getFastestLapTime(results);
@@ -134,11 +151,11 @@ export class GetRaceResultsDetailUseCase {
       results,
       drivers,
       penalties: penaltySummary,
-      pointsSystem,
+      ...(pointsSystem ? { pointsSystem } : {}),
       ...(fastestLapTime !== undefined ? { fastestLapTime } : {}),
-      currentDriverId: effectiveCurrentDriverId,
+      ...(effectiveCurrentDriverId ? { currentDriverId: effectiveCurrentDriverId } : {}),
     };
 
-    this.presenter.present(viewModel);
+    presenter.present(viewModel);
   }
 }

packages/racing/application/use-cases/GetRaceWithSOFUseCase.ts

@@ -14,13 +14,16 @@ import {
   AverageStrengthOfFieldCalculator,
   type StrengthOfFieldCalculator,
 } from '../../domain/services/StrengthOfFieldCalculator';
-import type { IRaceWithSOFPresenter } from '../presenters/IRaceWithSOFPresenter';
+import type { IRaceWithSOFPresenter, RaceWithSOFResultDTO } from '../presenters/IRaceWithSOFPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 export interface GetRaceWithSOFQueryParams {
   raceId: string;
 }
 
-export class GetRaceWithSOFUseCase {
+export class GetRaceWithSOFUseCase
+  implements UseCase<GetRaceWithSOFQueryParams, RaceWithSOFResultDTO, import('../presenters/IRaceWithSOFPresenter').RaceWithSOFViewModel, IRaceWithSOFPresenter>
+{
   private readonly sofCalculator: StrengthOfFieldCalculator;
 
   constructor(
@@ -28,18 +31,19 @@ export class GetRaceWithSOFUseCase {
     private readonly registrationRepository: IRaceRegistrationRepository,
     private readonly resultRepository: IResultRepository,
     private readonly driverRatingProvider: DriverRatingProvider,
-    public readonly presenter: IRaceWithSOFPresenter,
     sofCalculator?: StrengthOfFieldCalculator,
   ) {
     this.sofCalculator = sofCalculator ?? new AverageStrengthOfFieldCalculator();
   }
 
-  async execute(params: GetRaceWithSOFQueryParams): Promise<void> {
+  async execute(params: GetRaceWithSOFQueryParams, presenter: IRaceWithSOFPresenter): Promise<void> {
+    presenter.reset();
+
     const { raceId } = params;
 
     const race = await this.raceRepository.findById(raceId);
     if (!race) {
-      return null;
+      return;
     }
 
     // Get participant IDs based on race status
@@ -66,20 +70,24 @@ export class GetRaceWithSOFUseCase {
       strengthOfField = this.sofCalculator.calculate(driverRatings);
     }
 
-    this.presenter.present(
+    presenter.reset();
-      race.id,
+
-      race.leagueId,
+    const dto: RaceWithSOFResultDTO = {
-      race.scheduledAt,
+      raceId: race.id,
-      race.track,
+      leagueId: race.leagueId,
-      race.trackId,
+      scheduledAt: race.scheduledAt,
-      race.car,
+      track: race.track ?? '',
-      race.carId,
+      trackId: race.trackId ?? '',
-      race.sessionType,
+      car: race.car ?? '',
-      race.status,
+      carId: race.carId ?? '',
+      sessionType: race.sessionType,
+      status: race.status,
       strengthOfField,
-      race.registeredCount ?? participantIds.length,
+      registeredCount: race.registeredCount ?? participantIds.length,
-      race.maxParticipants,
+      maxParticipants: race.maxParticipants ?? participantIds.length,
-      participantIds.length
+      participantCount: participantIds.length,
-    );
+    };
+
+    presenter.present(dto);
   }
 }

packages/racing/application/use-cases/GetRacesPageDataUseCase.ts

@@ -1,15 +1,23 @@
 import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
 import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
-import type { IRacesPagePresenter } from '@gridpilot/racing/application/presenters/IRacesPagePresenter';
+import type {
+  IRacesPagePresenter,
+  RacesPageResultDTO,
+  RacesPageViewModel,
+} from '@gridpilot/racing/application/presenters/IRacesPagePresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
-export class GetRacesPageDataUseCase {
+export class GetRacesPageDataUseCase
+  implements UseCase<void, RacesPageResultDTO, RacesPageViewModel, IRacesPagePresenter>
+{
   constructor(
     private readonly raceRepository: IRaceRepository,
     private readonly leagueRepository: ILeagueRepository,
-    public readonly presenter: IRacesPagePresenter,
   ) {}
 
-  async execute(): Promise<void> {
+  async execute(_input: void, presenter: IRacesPagePresenter): Promise<void> {
+    presenter.reset();
+
     const [allRaces, allLeagues] = await Promise.all([
       this.raceRepository.findAll(),
       this.leagueRepository.findAll(),
@@ -33,6 +41,10 @@ export class GetRacesPageDataUseCase {
         isPast: race.isPast(),
       }));
 
-    this.presenter.present(races);
+    const dto: RacesPageResultDTO = {
+      races,
+    };
+
+    presenter.present(dto);
   }
 }

packages/racing/application/use-cases/GetSponsorDashboardUseCase.ts

@@ -10,7 +10,11 @@ import type { ISeasonRepository } from '../../domain/repositories/ISeasonReposit
 import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
 import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
 import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
-import type { ISponsorDashboardPresenter } from '../presenters/ISponsorDashboardPresenter';
+import type {
+  ISponsorDashboardPresenter,
+  SponsorDashboardViewModel,
+} from '../presenters/ISponsorDashboardPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 export interface GetSponsorDashboardQueryParams {
   sponsorId: string;
@@ -47,7 +51,9 @@ export interface SponsorDashboardDTO {
   };
 }
 
-export class GetSponsorDashboardUseCase {
+export class GetSponsorDashboardUseCase
+  implements UseCase<GetSponsorDashboardQueryParams, SponsorDashboardDTO | null, SponsorDashboardViewModel, ISponsorDashboardPresenter>
+{
   constructor(
     private readonly sponsorRepository: ISponsorRepository,
     private readonly seasonSponsorshipRepository: ISeasonSponsorshipRepository,
@@ -55,15 +61,19 @@ export class GetSponsorDashboardUseCase {
     private readonly leagueRepository: ILeagueRepository,
     private readonly leagueMembershipRepository: ILeagueMembershipRepository,
     private readonly raceRepository: IRaceRepository,
-    private readonly presenter: ISponsorDashboardPresenter,
   ) {}
 
-  async execute(params: GetSponsorDashboardQueryParams): Promise<void> {
+  async execute(
+    params: GetSponsorDashboardQueryParams,
+    presenter: ISponsorDashboardPresenter,
+  ): Promise<void> {
+    presenter.reset();
+
     const { sponsorId } = params;
 
     const sponsor = await this.sponsorRepository.findById(sponsorId);
     if (!sponsor) {
-      this.presenter.present(null);
+      presenter.present(null);
       return;
     }
 
@@ -143,7 +153,7 @@ export class GetSponsorDashboardUseCase {
       ? Math.min(100, (mainSponsorships * 30) + (sponsorships.length * 10))
       : 0;
 
-    this.presenter.present({
+    const dto: SponsorDashboardDTO = {
       sponsorId,
       sponsorName: sponsor.name,
       metrics: {
@@ -162,6 +172,8 @@ export class GetSponsorDashboardUseCase {
         totalInvestment,
         costPerThousandViews: Math.round(costPerThousandViews * 100) / 100,
       },
-    });
+    };
+
+    presenter.present(dto);
   }
 }

packages/racing/application/use-cases/GetSponsorSponsorshipsUseCase.ts

@@ -11,7 +11,11 @@ import type { ILeagueRepository } from '../../domain/repositories/ILeagueReposit
 import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
 import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
 import type { SponsorshipTier, SponsorshipStatus } from '../../domain/entities/SeasonSponsorship';
-import type { ISponsorSponsorshipsPresenter } from '../presenters/ISponsorSponsorshipsPresenter';
+import type {
+  ISponsorSponsorshipsPresenter,
+  SponsorSponsorshipsViewModel,
+} from '../presenters/ISponsorSponsorshipsPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 export interface GetSponsorSponsorshipsQueryParams {
   sponsorId: string;
@@ -62,7 +66,9 @@ export interface SponsorSponsorshipsDTO {
   };
 }
 
-export class GetSponsorSponsorshipsUseCase {
+export class GetSponsorSponsorshipsUseCase
+  implements UseCase<GetSponsorSponsorshipsQueryParams, SponsorSponsorshipsDTO | null, SponsorSponsorshipsViewModel, ISponsorSponsorshipsPresenter>
+{
   constructor(
     private readonly sponsorRepository: ISponsorRepository,
     private readonly seasonSponsorshipRepository: ISeasonSponsorshipRepository,
@@ -70,15 +76,19 @@ export class GetSponsorSponsorshipsUseCase {
     private readonly leagueRepository: ILeagueRepository,
     private readonly leagueMembershipRepository: ILeagueMembershipRepository,
     private readonly raceRepository: IRaceRepository,
-    private readonly presenter: ISponsorSponsorshipsPresenter,
   ) {}
 
-  async execute(params: GetSponsorSponsorshipsQueryParams): Promise<void> {
+  async execute(
+    params: GetSponsorSponsorshipsQueryParams,
+    presenter: ISponsorSponsorshipsPresenter,
+  ): Promise<void> {
+    presenter.reset();
+
     const { sponsorId } = params;
 
     const sponsor = await this.sponsorRepository.findById(sponsorId);
     if (!sponsor) {
-      this.presenter.present(null);
+      presenter.present(null);
       return;
     }
 
@@ -150,7 +160,7 @@ export class GetSponsorSponsorshipsUseCase {
 
     const activeSponsorships = sponsorships.filter(s => s.status === 'active').length;
 
-    this.presenter.present({
+    const dto: SponsorSponsorshipsDTO = {
       sponsorId,
       sponsorName: sponsor.name,
       sponsorships: sponsorshipDetails,
@@ -161,6 +171,8 @@ export class GetSponsorSponsorshipsUseCase {
         totalPlatformFees,
         currency: 'USD',
       },
-    });
+    };
+
+    presenter.present(dto);
   }
 }

packages/racing/application/use-cases/GetTeamDetailsUseCase.ts

@@ -1,19 +1,31 @@
 import type { ITeamRepository } from '../../domain/repositories/ITeamRepository';
 import type { ITeamMembershipRepository } from '../../domain/repositories/ITeamMembershipRepository';
-import type { ITeamDetailsPresenter } from '../presenters/ITeamDetailsPresenter';
+import type {
+  ITeamDetailsPresenter,
+  TeamDetailsResultDTO,
+  TeamDetailsViewModel,
+} from '../presenters/ITeamDetailsPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
 
 /**
  * Use Case for retrieving team details.
  * Orchestrates domain logic and delegates presentation to the presenter.
  */
-export class GetTeamDetailsUseCase {
+export class GetTeamDetailsUseCase
+  implements UseCase<{ teamId: string; driverId: string }, TeamDetailsResultDTO, TeamDetailsViewModel, ITeamDetailsPresenter>
+{
   constructor(
     private readonly teamRepository: ITeamRepository,
     private readonly membershipRepository: ITeamMembershipRepository,
-    public readonly presenter: ITeamDetailsPresenter,
   ) {}
 
-  async execute(teamId: string, driverId: string): Promise<void> {
+  async execute(
+    params: { teamId: string; driverId: string },
+    presenter: ITeamDetailsPresenter,
+  ): Promise<void> {
+    presenter.reset();
+
+    const { teamId, driverId } = params;
     const team = await this.teamRepository.findById(teamId);
     if (!team) {
       throw new Error('Team not found');
@@ -21,6 +33,12 @@ export class GetTeamDetailsUseCase {
 
     const membership = await this.membershipRepository.getMembership(teamId, driverId);
 
-    this.presenter.present(team, membership, driverId);
+    const dto: TeamDetailsResultDTO = {
+      team,
+      membership,
+      driverId,
+    };
+
+    presenter.present(dto);
   }
 }

packages/racing/application/use-cases/PreviewLeagueScheduleUseCase.ts

@@ -17,6 +17,10 @@ export class PreviewLeagueScheduleUseCase {
   execute(params: PreviewLeagueScheduleQueryParams): void {
     const seasonSchedule = scheduleDTOToSeasonSchedule(params.schedule);
 
+    if (!seasonSchedule) {
+      throw new Error('Invalid schedule data');
+    }
+
     const maxRounds =
       params.maxRounds && params.maxRounds > 0
         ? Math.min(params.maxRounds, seasonSchedule.plannedRounds)
@@ -46,8 +50,11 @@ export class PreviewLeagueScheduleUseCase {
       return 'No rounds scheduled.';
     }
 
-    const first = new Date(rounds[0].scheduledAt);
+    const firstRound = rounds[0]!;
-    const last = new Date(rounds[rounds.length - 1].scheduledAt);
+    const lastRound = rounds[rounds.length - 1]!;
+
+    const first = new Date(firstRound.scheduledAt);
+    const last = new Date(lastRound.scheduledAt);
 
     const firstDate = first.toISOString().slice(0, 10);
     const lastDate = last.toISOString().slice(0, 10);

packages/racing/application/use-cases/UpdateTeamUseCase.ts

@@ -22,10 +22,12 @@ export class UpdateTeamUseCase {
       throw new Error('Team not found');
     }
 
-    const updated: Team = {
+    const updated = existing.update({
-      ...existing,
+      ...(updates.name !== undefined && { name: updates.name }),
-      ...updates,
+      ...(updates.tag !== undefined && { tag: updates.tag }),
-    };
+      ...(updates.description !== undefined && { description: updates.description }),
+      ...(updates.leagues !== undefined && { leagues: updates.leagues }),
+    });
 
     await this.teamRepository.update(updated);
   }

packages/racing/domain/entities/Car.ts

@@ -19,9 +19,9 @@ export class Car implements IEntity<string> {
   readonly carClass: CarClass;
   readonly license: CarLicense;
   readonly year: number;
-  readonly horsepower?: number;
+  readonly horsepower: number | undefined;
-  readonly weight?: number;
+  readonly weight: number | undefined;
-  readonly imageUrl?: string;
+  readonly imageUrl: string | undefined;
   readonly gameId: string;
 
   private constructor(props: {

packages/racing/domain/entities/Driver.ts

@@ -13,7 +13,7 @@ export class Driver implements IEntity<string> {
   readonly iracingId: string;
   readonly name: string;
   readonly country: string;
-  readonly bio?: string;
+  readonly bio: string | undefined;
   readonly joinedAt: Date;
 
   private constructor(props: {
@@ -92,14 +92,18 @@ export class Driver implements IEntity<string> {
   update(props: Partial<{
     name: string;
     country: string;
-    bio: string;
+    bio?: string;
   }>): Driver {
+    const nextName = props.name ?? this.name;
+    const nextCountry = props.country ?? this.country;
+    const nextBio = props.bio ?? this.bio;
+
     return new Driver({
       id: this.id,
       iracingId: this.iracingId,
-      name: props.name ?? this.name,
+      name: nextName,
-      country: props.country ?? this.country,
+      country: nextCountry,
-      bio: props.bio ?? this.bio,
+      ...(nextBio !== undefined ? { bio: nextBio } : {}),
       joinedAt: this.joinedAt,
     });
   }

packages/racing/domain/entities/League.ts

@@ -87,7 +87,7 @@ export class League implements IEntity<string> {
   readonly ownerId: string;
   readonly settings: LeagueSettings;
   readonly createdAt: Date;
-  readonly socialLinks?: LeagueSocialLinks;
+  readonly socialLinks: LeagueSocialLinks | undefined;
 
   private constructor(props: {
     id: string;
@@ -140,6 +140,8 @@ export class League implements IEntity<string> {
       stewarding: defaultStewardingSettings,
     };
 
+    const socialLinks = props.socialLinks;
+
     return new League({
       id: props.id,
       name: props.name,
@@ -147,7 +149,7 @@ export class League implements IEntity<string> {
       ownerId: props.ownerId,
       settings: { ...defaultSettings, ...props.settings },
       createdAt: props.createdAt ?? new Date(),
-      socialLinks: props.socialLinks,
+      ...(socialLinks !== undefined ? { socialLinks } : {}),
     });
   }
 
@@ -189,7 +191,7 @@ export class League implements IEntity<string> {
     description: string;
     ownerId: string;
     settings: LeagueSettings;
-    socialLinks: LeagueSocialLinks | undefined;
+    socialLinks?: LeagueSocialLinks;
   }>): League {
     return new League({
       id: this.id,
@@ -198,7 +200,11 @@ export class League implements IEntity<string> {
       ownerId: props.ownerId ?? this.ownerId,
       settings: props.settings ?? this.settings,
       createdAt: this.createdAt,
-      socialLinks: props.socialLinks ?? this.socialLinks,
+      ...(props.socialLinks !== undefined
+        ? { socialLinks: props.socialLinks }
+        : this.socialLinks !== undefined
+        ? { socialLinks: this.socialLinks }
+        : {}),
     });
   }
 }

packages/racing/domain/entities/Penalty.ts

@@ -102,12 +102,16 @@ export class Penalty implements IEntity<string> {
     if (this.props.status === 'overturned') {
       throw new RacingDomainInvariantError('Cannot apply an overturned penalty');
     }
-    return new Penalty({
+    const base: PenaltyProps = {
       ...this.props,
       status: 'applied',
       appliedAt: new Date(),
-      notes,
+    };
-    });
+
+    const next: PenaltyProps =
+      notes !== undefined ? { ...base, notes } : base;
+
+    return Penalty.create(next);
   }
 
   /**

packages/racing/domain/entities/Protest.ts

@@ -153,14 +153,18 @@ export class Protest implements IEntity<string> {
     if (!statement?.trim()) {
       throw new RacingDomainValidationError('Defense statement is required');
     }
+    const defenseBase: ProtestDefense = {
+      statement: statement.trim(),
+      submittedAt: new Date(),
+    };
+
+    const nextDefense: ProtestDefense =
+      videoUrl !== undefined ? { ...defenseBase, videoUrl } : defenseBase;
+
     return new Protest({
       ...this.props,
       status: 'under_review',
-      defense: {
+      defense: nextDefense,
-        statement: statement.trim(),
-        videoUrl,
-        submittedAt: new Date(),
-      },
     });
   }
 

packages/racing/domain/entities/Race.ts

@@ -16,14 +16,14 @@ export class Race implements IEntity<string> {
   readonly leagueId: string;
   readonly scheduledAt: Date;
   readonly track: string;
-  readonly trackId?: string;
+  readonly trackId: string | undefined;
   readonly car: string;
-  readonly carId?: string;
+  readonly carId: string | undefined;
   readonly sessionType: SessionType;
   readonly status: RaceStatus;
-  readonly strengthOfField?: number;
+  readonly strengthOfField: number | undefined;
-  readonly registeredCount?: number;
+  readonly registeredCount: number | undefined;
-  readonly maxParticipants?: number;
+  readonly maxParticipants: number | undefined;
 
   private constructor(props: {
     id: string;
@@ -127,10 +127,34 @@ export class Race implements IEntity<string> {
       throw new RacingDomainInvariantError('Only scheduled races can be started');
     }
 
-    return new Race({
+    const base = {
-      ...this,
+      id: this.id,
-      status: 'running',
+      leagueId: this.leagueId,
-    });
+      scheduledAt: this.scheduledAt,
+      track: this.track,
+      car: this.car,
+      sessionType: this.sessionType,
+      status: 'running' as RaceStatus,
+    };
+
+    const withTrackId =
+      this.trackId !== undefined ? { ...base, trackId: this.trackId } : base;
+    const withCarId =
+      this.carId !== undefined ? { ...withTrackId, carId: this.carId } : withTrackId;
+    const withSof =
+      this.strengthOfField !== undefined
+        ? { ...withCarId, strengthOfField: this.strengthOfField }
+        : withCarId;
+    const withRegistered =
+      this.registeredCount !== undefined
+        ? { ...withSof, registeredCount: this.registeredCount }
+        : withSof;
+    const props =
+      this.maxParticipants !== undefined
+        ? { ...withRegistered, maxParticipants: this.maxParticipants }
+        : withRegistered;
+
+    return Race.create(props);
   }
 
   /**
@@ -145,10 +169,34 @@ export class Race implements IEntity<string> {
       throw new RacingDomainInvariantError('Cannot complete a cancelled race');
     }
 
-    return new Race({
+    const base = {
-      ...this,
+      id: this.id,
-      status: 'completed',
+      leagueId: this.leagueId,
-    });
+      scheduledAt: this.scheduledAt,
+      track: this.track,
+      car: this.car,
+      sessionType: this.sessionType,
+      status: 'completed' as RaceStatus,
+    };
+
+    const withTrackId =
+      this.trackId !== undefined ? { ...base, trackId: this.trackId } : base;
+    const withCarId =
+      this.carId !== undefined ? { ...withTrackId, carId: this.carId } : withTrackId;
+    const withSof =
+      this.strengthOfField !== undefined
+        ? { ...withCarId, strengthOfField: this.strengthOfField }
+        : withCarId;
+    const withRegistered =
+      this.registeredCount !== undefined
+        ? { ...withSof, registeredCount: this.registeredCount }
+        : withSof;
+    const props =
+      this.maxParticipants !== undefined
+        ? { ...withRegistered, maxParticipants: this.maxParticipants }
+        : withRegistered;
+
+    return Race.create(props);
   }
 
   /**
@@ -163,21 +211,62 @@ export class Race implements IEntity<string> {
       throw new RacingDomainInvariantError('Race is already cancelled');
     }
 
-    return new Race({
+    const base = {
-      ...this,
+      id: this.id,
-      status: 'cancelled',
+      leagueId: this.leagueId,
-    });
+      scheduledAt: this.scheduledAt,
+      track: this.track,
+      car: this.car,
+      sessionType: this.sessionType,
+      status: 'cancelled' as RaceStatus,
+    };
+
+    const withTrackId =
+      this.trackId !== undefined ? { ...base, trackId: this.trackId } : base;
+    const withCarId =
+      this.carId !== undefined ? { ...withTrackId, carId: this.carId } : withTrackId;
+    const withSof =
+      this.strengthOfField !== undefined
+        ? { ...withCarId, strengthOfField: this.strengthOfField }
+        : withCarId;
+    const withRegistered =
+      this.registeredCount !== undefined
+        ? { ...withSof, registeredCount: this.registeredCount }
+        : withSof;
+    const props =
+      this.maxParticipants !== undefined
+        ? { ...withRegistered, maxParticipants: this.maxParticipants }
+        : withRegistered;
+
+    return Race.create(props);
   }
 
   /**
    * Update SOF and participant count
    */
   updateField(strengthOfField: number, registeredCount: number): Race {
-    return new Race({
+    const base = {
-      ...this,
+      id: this.id,
+      leagueId: this.leagueId,
+      scheduledAt: this.scheduledAt,
+      track: this.track,
+      car: this.car,
+      sessionType: this.sessionType,
+      status: this.status,
       strengthOfField,
       registeredCount,
-    });
+    };
+
+    const withTrackId =
+      this.trackId !== undefined ? { ...base, trackId: this.trackId } : base;
+    const withCarId =
+      this.carId !== undefined ? { ...withTrackId, carId: this.carId } : withTrackId;
+    const props =
+      this.maxParticipants !== undefined
+        ? { ...withCarId, maxParticipants: this.maxParticipants }
+        : withCarId;
+
+    return Race.create(props);
   }
 
   /**

packages/racing/domain/entities/Season.ts

@@ -8,11 +8,11 @@ export class Season implements IEntity<string> {
   readonly leagueId: string;
   readonly gameId: string;
   readonly name: string;
-  readonly year?: number;
+  readonly year: number | undefined;
-  readonly order?: number;
+  readonly order: number | undefined;
   readonly status: SeasonStatus;
-  readonly startDate?: Date;
+  readonly startDate: Date | undefined;
-  readonly endDate?: Date;
+  readonly endDate: Date | undefined;
 
   private constructor(props: {
     id: string;

packages/racing/domain/entities/SeasonSponsorship.ts

@@ -33,8 +33,8 @@ export class SeasonSponsorship implements IEntity<string> {
   readonly pricing: Money;
   readonly status: SponsorshipStatus;
   readonly createdAt: Date;
-  readonly activatedAt?: Date;
+  readonly activatedAt: Date | undefined;
-  readonly description?: string;
+  readonly description: string | undefined;
 
   private constructor(props: SeasonSponsorshipProps) {
     this.id = props.id;
@@ -105,11 +105,23 @@ export class SeasonSponsorship implements IEntity<string> {
       throw new RacingDomainInvariantError('Cannot activate a cancelled SeasonSponsorship');
     }
 
-    return new SeasonSponsorship({
+    const base: SeasonSponsorshipProps = {
-      ...this,
+      id: this.id,
+      seasonId: this.seasonId,
+      sponsorId: this.sponsorId,
+      tier: this.tier,
+      pricing: this.pricing,
       status: 'active',
+      createdAt: this.createdAt,
       activatedAt: new Date(),
-    });
+    };
+
+    const next: SeasonSponsorshipProps =
+      this.description !== undefined
+        ? { ...base, description: this.description }
+        : base;
+
+    return new SeasonSponsorship(next);
   }
 
   /**
@@ -120,10 +132,27 @@ export class SeasonSponsorship implements IEntity<string> {
       throw new RacingDomainInvariantError('SeasonSponsorship is already cancelled');
     }
 
-    return new SeasonSponsorship({
+    const base: SeasonSponsorshipProps = {
-      ...this,
+      id: this.id,
+      seasonId: this.seasonId,
+      sponsorId: this.sponsorId,
+      tier: this.tier,
+      pricing: this.pricing,
       status: 'cancelled',
-    });
+      createdAt: this.createdAt,
+    };
+
+    const withActivated =
+      this.activatedAt !== undefined
+        ? { ...base, activatedAt: this.activatedAt }
+        : base;
+
+    const next: SeasonSponsorshipProps =
+      this.description !== undefined
+        ? { ...withActivated, description: this.description }
+        : withActivated;
+
+    return new SeasonSponsorship(next);
   }
 
   /**

packages/racing/domain/entities/Sponsor.ts

@@ -20,8 +20,8 @@ export class Sponsor implements IEntity<string> {
   readonly id: string;
   readonly name: string;
   readonly contactEmail: string;
-  readonly logoUrl?: string;
+  readonly logoUrl: string | undefined;
-  readonly websiteUrl?: string;
+  readonly websiteUrl: string | undefined;
   readonly createdAt: Date;
 
   private constructor(props: SponsorProps) {
@@ -36,10 +36,22 @@ export class Sponsor implements IEntity<string> {
   static create(props: Omit<SponsorProps, 'createdAt'> & { createdAt?: Date }): Sponsor {
     this.validate(props);
 
-    return new Sponsor({
+    const { createdAt, ...rest } = props;
-      ...props,
+    const base = {
-      createdAt: props.createdAt ?? new Date(),
+      id: rest.id,
-    });
+      name: rest.name,
+      contactEmail: rest.contactEmail,
+      createdAt: createdAt ?? new Date(),
+    };
+
+    const withLogo =
+      rest.logoUrl !== undefined ? { ...base, logoUrl: rest.logoUrl } : base;
+    const withWebsite =
+      rest.websiteUrl !== undefined
+        ? { ...withLogo, websiteUrl: rest.websiteUrl }
+        : withLogo;
+
+    return new Sponsor(withWebsite);
   }
 
   private static validate(props: Omit<SponsorProps, 'createdAt'>): void {
@@ -80,18 +92,30 @@ export class Sponsor implements IEntity<string> {
   update(props: Partial<{
     name: string;
     contactEmail: string;
-    logoUrl: string | undefined;
+    logoUrl?: string;
-    websiteUrl: string | undefined;
+    websiteUrl?: string;
   }>): Sponsor {
-    const updated = {
+    const updatedBase = {
       id: this.id,
       name: props.name ?? this.name,
       contactEmail: props.contactEmail ?? this.contactEmail,
-      logoUrl: props.logoUrl !== undefined ? props.logoUrl : this.logoUrl,
-      websiteUrl: props.websiteUrl !== undefined ? props.websiteUrl : this.websiteUrl,
       createdAt: this.createdAt,
     };
 
+    const withLogo =
+      props.logoUrl !== undefined
+        ? { ...updatedBase, logoUrl: props.logoUrl }
+        : this.logoUrl !== undefined
+        ? { ...updatedBase, logoUrl: this.logoUrl }
+        : updatedBase;
+
+    const updated =
+      props.websiteUrl !== undefined
+        ? { ...withLogo, websiteUrl: props.websiteUrl }
+        : this.websiteUrl !== undefined
+        ? { ...withLogo, websiteUrl: this.websiteUrl }
+        : withLogo;
+
     Sponsor.validate(updated);
     return new Sponsor(updated);
   }

packages/racing/domain/entities/SponsorshipRequest.ts

@@ -36,12 +36,12 @@ export class SponsorshipRequest implements IEntity<string> {
   readonly entityId: string;
   readonly tier: SponsorshipTier;
   readonly offeredAmount: Money;
-  readonly message?: string;
+  readonly message: string | undefined;
   readonly status: SponsorshipRequestStatus;
   readonly createdAt: Date;
-  readonly respondedAt?: Date;
+  readonly respondedAt: Date | undefined;
-  readonly respondedBy?: string;
+  readonly respondedBy: string | undefined;
-  readonly rejectionReason?: string;
+  readonly rejectionReason: string | undefined;
 
   private constructor(props: SponsorshipRequestProps) {
     this.id = props.id;
@@ -113,12 +113,28 @@ export class SponsorshipRequest implements IEntity<string> {
       throw new RacingDomainValidationError('respondedBy is required when accepting');
     }
 
-    return new SponsorshipRequest({
+    const base: SponsorshipRequestProps = {
-      ...this,
+      id: this.id,
+      sponsorId: this.sponsorId,
+      entityType: this.entityType,
+      entityId: this.entityId,
+      tier: this.tier,
+      offeredAmount: this.offeredAmount,
       status: 'accepted',
+      createdAt: this.createdAt,
       respondedAt: new Date(),
       respondedBy,
-    });
+    };
+
+    const withMessage =
+      this.message !== undefined ? { ...base, message: this.message } : base;
+
+    const next: SponsorshipRequestProps =
+      this.rejectionReason !== undefined
+        ? { ...withMessage, rejectionReason: this.rejectionReason }
+        : withMessage;
+
+    return new SponsorshipRequest(next);
   }
 
   /**
@@ -133,13 +149,26 @@ export class SponsorshipRequest implements IEntity<string> {
       throw new RacingDomainValidationError('respondedBy is required when rejecting');
     }
 
-    return new SponsorshipRequest({
+    const base: SponsorshipRequestProps = {
-      ...this,
+      id: this.id,
+      sponsorId: this.sponsorId,
+      entityType: this.entityType,
+      entityId: this.entityId,
+      tier: this.tier,
+      offeredAmount: this.offeredAmount,
       status: 'rejected',
+      createdAt: this.createdAt,
       respondedAt: new Date(),
       respondedBy,
-      rejectionReason: reason,
+    };
-    });
+
+    const withMessage =
+      this.message !== undefined ? { ...base, message: this.message } : base;
+
+    const next: SponsorshipRequestProps =
+      reason !== undefined ? { ...withMessage, rejectionReason: reason } : withMessage;
+
+    return new SponsorshipRequest(next);
   }
 
   /**
@@ -150,11 +179,34 @@ export class SponsorshipRequest implements IEntity<string> {
       throw new RacingDomainInvariantError(`Cannot withdraw a ${this.status} sponsorship request`);
     }
 
-    return new SponsorshipRequest({
+    const base: SponsorshipRequestProps = {
-      ...this,
+      id: this.id,
+      sponsorId: this.sponsorId,
+      entityType: this.entityType,
+      entityId: this.entityId,
+      tier: this.tier,
+      offeredAmount: this.offeredAmount,
       status: 'withdrawn',
+      createdAt: this.createdAt,
       respondedAt: new Date(),
-    });
+    };
+
+    const withRespondedBy =
+      this.respondedBy !== undefined
+        ? { ...base, respondedBy: this.respondedBy }
+        : base;
+
+    const withMessage =
+      this.message !== undefined
+        ? { ...withRespondedBy, message: this.message }
+        : withRespondedBy;
+
+    const next: SponsorshipRequestProps =
+      this.rejectionReason !== undefined
+        ? { ...withMessage, rejectionReason: this.rejectionReason }
+        : withMessage;
+
+    return new SponsorshipRequest(next);
   }
 
   /**

packages/racing/domain/entities/Standing.ts

@@ -5,7 +5,7 @@
  * Immutable entity with factory methods and domain validation.
  */
  
-import { RacingDomainValidationError, RacingDomainError } from '../errors/RacingDomainError';
+import { RacingDomainError, RacingDomainValidationError } from '../errors/RacingDomainError';
 import type { IEntity } from '@gridpilot/shared/domain';
 
 export class Standing implements IEntity<string> {
@@ -104,12 +104,17 @@ export class Standing implements IEntity<string> {
    */
   updatePosition(position: number): Standing {
     if (!Number.isInteger(position) || position < 1) {
-      throw new RacingDomainError('Position must be a positive integer');
+      throw new RacingDomainValidationError('Position must be a positive integer');
     }
 
-    return new Standing({
+    return Standing.create({
-      ...this,
+      id: this.id,
+      leagueId: this.leagueId,
+      driverId: this.driverId,
+      points: this.points,
+      wins: this.wins,
       position,
+      racesCompleted: this.racesCompleted,
     });
   }
 

packages/racing/domain/entities/Track.ts

@@ -20,7 +20,7 @@ export class Track implements IEntity<string> {
   readonly difficulty: TrackDifficulty;
   readonly lengthKm: number;
   readonly turns: number;
-  readonly imageUrl?: string;
+  readonly imageUrl: string | undefined;
   readonly gameId: string;
 
   private constructor(props: {
@@ -32,7 +32,7 @@ export class Track implements IEntity<string> {
     difficulty: TrackDifficulty;
     lengthKm: number;
     turns: number;
-    imageUrl?: string;
+    imageUrl?: string | undefined;
     gameId: string;
   }) {
     this.id = props.id;
@@ -64,7 +64,7 @@ export class Track implements IEntity<string> {
   }): Track {
     this.validate(props);
 
-    return new Track({
+    const base = {
       id: props.id,
       name: props.name,
       shortName: props.shortName ?? props.name.slice(0, 3).toUpperCase(),
@@ -73,9 +73,13 @@ export class Track implements IEntity<string> {
       difficulty: props.difficulty ?? 'intermediate',
       lengthKm: props.lengthKm,
       turns: props.turns,
-      imageUrl: props.imageUrl,
       gameId: props.gameId,
-    });
+    };
+
+    const withImage =
+      props.imageUrl !== undefined ? { ...base, imageUrl: props.imageUrl } : base;
+
+    return new Track(withImage);
   }
 
   /**

packages/racing/domain/repositories/ITeamMembershipRepository.ts

@@ -36,6 +36,11 @@ export interface ITeamMembershipRepository {
    */
   removeMembership(teamId: string, driverId: string): Promise<void>;
 
+  /**
+   * Count active members for a team.
+   */
+  countByTeamId(teamId: string): Promise<number>;
+
   /**
    * Get all join requests for a team.
    */