remove google and oauth login

frontend/src/app/app.routes.ts

@@ -14,10 +14,6 @@ export const routes: Routes = [
     loadComponent: () => import('./auth/register/register.component').then(m => m.RegisterComponent),
     canActivate: [LoginGuard],
   },
-  {
-    path: 'oauth2/callback',
-    loadComponent: () => import('./auth/oauth-callback/oauth-callback.component').then(m => m.OAuthCallbackComponent),
-  },
   {
     path: 'dashboard',
     loadComponent: () => import('./dashboard/dashboard.component').then(m => m.DashboardComponent),

frontend/src/app/auth/login/login.component.ts

@@ -6,7 +6,6 @@ import { MatFormFieldModule } from '@angular/material/form-field';
 import { MatInputModule } from '@angular/material/input';
 import { MatButtonModule } from '@angular/material/button';
 import { MatProgressSpinnerModule } from '@angular/material/progress-spinner';
-import { MatDividerModule } from '@angular/material/divider';
 import { AuthService } from '../../core/services/auth.service';
 import { NgIf } from '@angular/common';
 
@@ -16,7 +15,7 @@ import { NgIf } from '@angular/common';
   imports: [
     RouterLink, ReactiveFormsModule, NgIf,
     MatCardModule, MatFormFieldModule, MatInputModule, MatButtonModule,
-    MatProgressSpinnerModule, MatDividerModule,
+    MatProgressSpinnerModule,
   ],
   template: `
     <div class="min-h-screen flex items-center justify-center bg-gray-50 px-4">
@@ -48,19 +47,6 @@ import { NgIf } from '@angular/common';
           </button>
         </form>
 
-        <div class="my-4">
-          <mat-divider></mat-divider>
-        </div>
-
-        <div class="flex flex-col gap-3">
-          <a mat-stroked-button href="/oauth2/authorization/google" class="w-full">
-            Sign in with Google
-          </a>
-          <a mat-stroked-button href="/oauth2/authorization/github" class="w-full">
-            Sign in with GitHub
-          </a>
-        </div>
-
         <p class="text-center mt-6 text-sm text-gray-500">
           Don't have an account?
           <a routerLink="/register" class="text-indigo-600 font-medium hover:underline">Register</a>

frontend/src/app/auth/oauth-callback/oauth-callback.component.ts

@@ -1,37 +0,0 @@
-import { Component, OnInit } from '@angular/core';
-import { ActivatedRoute, Router } from '@angular/router';
-import { AuthService } from '../../core/services/auth.service';
-import { MatProgressSpinnerModule } from '@angular/material/progress-spinner';
-
-@Component({
-  selector: 'app-oauth-callback',
-  standalone: true,
-  imports: [MatProgressSpinnerModule],
-  template: `
-    <div class="min-h-screen flex items-center justify-center bg-gray-50">
-      <div class="text-center">
-        <mat-spinner diameter="40" class="mx-auto mb-4"></mat-spinner>
-        <p class="text-gray-500">Completing sign in...</p>
-      </div>
-    </div>
-  `,
-})
-export class OAuthCallbackComponent implements OnInit {
-  constructor(
-    private route: ActivatedRoute,
-    private router: Router,
-    private authService: AuthService,
-  ) {}
-
-  ngOnInit(): void {
-    const accessToken = this.route.snapshot.queryParamMap.get('accessToken');
-    const refreshToken = this.route.snapshot.queryParamMap.get('refreshToken');
-
-    if (accessToken && refreshToken) {
-      this.authService.setSessionFromOAuth(accessToken, refreshToken);
-      this.router.navigate(['/dashboard']);
-    } else {
-      this.router.navigate(['/login']);
-    }
-  }
-}

frontend/src/app/core/models/auth-response.ts

@@ -10,5 +10,4 @@ export interface UserInfo {
   email: string;
   name: string;
   avatarUrl: string;
-  provider: 'LOCAL' | 'GOOGLE' | 'GITHUB' | 'OPENID';
 }

frontend/src/app/core/services/auth.service.ts

@@ -50,23 +50,6 @@ export class AuthService {
     return !!this.getAccessToken();
   }
 
-  setSessionFromOAuth(accessToken: string, refreshToken: string): void {
-    localStorage.setItem(this.ACCESS_TOKEN_KEY, accessToken);
-    localStorage.setItem(this.REFRESH_TOKEN_KEY, refreshToken);
-    const payload = this.decodeToken(accessToken);
-    if (payload) {
-      const user: UserInfo = {
-        id: payload.sub,
-        email: payload.email,
-        name: payload.name,
-        avatarUrl: payload.avatarUrl || '',
-        provider: payload.provider || 'LOCAL',
-      };
-      localStorage.setItem(this.USER_KEY, JSON.stringify(user));
-      this.userSubject.next(user);
-    }
-  }
-
   clearSessionForLogout(): void {
     this.clearSession();
   }
@@ -90,12 +73,4 @@ export class AuthService {
     return data ? JSON.parse(data) : null;
   }
 
-  private decodeToken(token: string): any {
-    try {
-      const parts = token.split('.');
-      return JSON.parse(atob(parts[1]));
-    } catch {
-      return null;
-    }
-  }
 }