AI Implementation feature(908): Challenges Page and Challenge Solve Modal 1.04 (#50)

frontend/src/app/features/challenges/challenges.page.ts

@@ -135,7 +135,7 @@ export class ChallengesPage implements OnInit, OnDestroy {
 
   ngOnInit(): void {
     const user = this.auth.currentUser();
-    if (user?.id) this.store.setMyUserId(user.id);
+    this.store.setMyUserId(user?.id ?? null);
     void this.store.load();
 
     // REST snapshot first so the page has synchronous state even if the SSE

frontend/src/app/features/challenges/challenges.store.ts

@@ -72,8 +72,25 @@ export class ChallengesStore {
   private sse: EventSourceLike | null = null;
   private countdownZeroHandler: (() => void) | null = null;
 
-  setMyUserId(id: string | null): void {
+  setMyUserId(id: string | null): string | null {
+    const prev = this._myUserId();
+    const hasCachedUserData = this._board() !== null || this._selectedDetail() !== null;
+    if (hasCachedUserData && prev !== id) {
+      this.reset();
+    }
     this._myUserId.set(id);
+    return prev;
+  }
+
+  reset(): void {
+    this.stop();
+    this._board.set(null);
+    this._selectedDetail.set(null);
+    this._myUserId.set(null);
+    this._error.set(null);
+    this._loading.set(false);
+    this.countdownZeroHandler = null;
+    this.solveListeners.clear();
   }
 
   async load(): Promise<void> {
@@ -224,7 +241,7 @@ export class ChallengesStore {
               ...card,
               livePoints: payload.livePoints ?? card.livePoints,
               solveCount: payload.solveCount ?? card.solveCount + 1,
-              solvedByMe: card.solvedByMe || isMine,
+              solvedByMe: isMine ? true : card.solvedByMe,
             };
           }),
         })),
@@ -246,7 +263,7 @@ export class ChallengesStore {
           ...detail.challenge,
           livePoints,
           solveCount,
-          solvedByMe: detail.challenge.solvedByMe || isMine,
+          solvedByMe: isMine ? true : detail.challenge.solvedByMe,
         },
         solvers: mergeSolveEventIntoSolvers(detail.solvers, payload),
       });
@@ -266,7 +283,7 @@ export class ChallengesStore {
               ...card,
               livePoints: response.challenge.livePoints,
               solveCount: response.challenge.solveCount,
-              solvedByMe: response.challenge.solvedByMe || card.solvedByMe,
+              solvedByMe: response.challenge.solvedByMe,
             };
           }),
         })),

frontend/src/app/features/home/home.component.ts

@@ -16,6 +16,7 @@ import { AuthService } from '../../core/services/auth.service';
 import { EventStatusStore } from '../../core/services/event-status.store';
 import { AuthenticatedEventSourceService } from '../../core/services/authenticated-event-source.service';
 import { UserStore } from '../../core/services/user.store';
+import { ChallengesStore } from '../challenges/challenges.store';
 import { ShellHeaderComponent } from '../shell/header/shell-header.component';
 import {
   ChangePasswordModalComponent,
@@ -91,6 +92,7 @@ export class HomeComponent implements OnInit, OnDestroy {
   readonly eventStatus = inject(EventStatusStore);
   private readonly authenticatedEventSource = inject(AuthenticatedEventSourceService);
   readonly userStore = inject(UserStore);
+  private readonly challengesStore = inject(ChallengesStore);
   private readonly router = inject(Router);
   private readonly destroyRef = inject(DestroyRef);
 
@@ -200,6 +202,7 @@ export class HomeComponent implements OnInit, OnDestroy {
     await this.auth.logout();
     this.userMenuOpen.set(false);
     this.userStore.reset();
+    this.challengesStore.reset();
     await this.router.navigateByUrl('/login');
   }
 
@@ -210,6 +213,7 @@ export class HomeComponent implements OnInit, OnDestroy {
     _reason: 'peer-logout' | 'sse-unauthorized',
   ): Promise<void> {
     this.userStore.reset();
+    this.challengesStore.reset();
     this.changePasswordOpen.set(false);
     this.userMenuOpen.set(false);
     if (this.navigatingToLogin) return;