Fix: AuthForm and Dashboard errors

The `AuthForm` component was missing the `signInWithEmail`, `signUpWithEmail`, and `signInWithGoogle` methods from the `AuthContextType`. The `Dashboard` component was missing the import for `auth`. This commit fixes these issues by ensuring the correct methods are available in the context and importing the `auth` object.

Author: lovable-dev[bot]

src/components/Dashboard.tsx

@@ -8,9 +8,10 @@ import { DashboardContent } from '@/components/DashboardContent';
 import { NetworkStatus } from '@/components/NetworkStatus';
 import { ErrorBoundary } from '@/components/ErrorBoundary';
 import { Helmet } from 'react-helmet-async';
-import { memo, useCallback, useMemo, useState } from 'react';
+import { memo, useCallback, useMemo } from 'react';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { BarChart3, Users, DollarSign, Percent } from 'lucide-react';
+import { auth } from '@/lib/firebase';
 
 // Composant de stats simplifié SANS requêtes Firebase lourdes
 const SimpleDashboardStats = ({ activeCampaigns, totalCampaigns, totalAffiliates }) => {

src/contexts/AuthContext.tsx

@@ -1,16 +1,22 @@
 
 import React, { createContext, useContext, useEffect, useState } from 'react';
-import { User, onAuthStateChanged } from 'firebase/auth';
-import { auth } from '@/lib/firebase';
+import { User, onAuthStateChanged, signInWithEmailAndPassword, createUserWithEmailAndPassword, signInWithPopup } from 'firebase/auth';
+import { auth, googleProvider } from '@/lib/firebase';
 
 interface AuthContextType {
   user: User | null;
   loading: boolean;
+  signInWithEmail: (email: string, password: string) => Promise<any>;
+  signUpWithEmail: (email: string, password: string) => Promise<any>;
+  signInWithGoogle: () => Promise<any>;
 }
 
 const AuthContext = createContext<AuthContextType>({
   user: null,
   loading: true,
+  signInWithEmail: async () => {},
+  signUpWithEmail: async () => {},
+  signInWithGoogle: async () => {},
 });
 
 export const AuthProvider = ({ children }: { children: React.ReactNode }) => {
@@ -41,8 +47,26 @@ export const AuthProvider = ({ children }: { children: React.ReactNode }) => {
     return unsubscribe;
   }, []);
 
+  const signInWithEmail = async (email: string, password: string) => {
+    return signInWithEmailAndPassword(auth, email, password);
+  };
+
+  const signUpWithEmail = async (email: string, password: string) => {
+    return createUserWithEmailAndPassword(auth, email, password);
+  };
+
+  const signInWithGoogle = async () => {
+    return signInWithPopup(auth, googleProvider);
+  };
+
   return (
-    <AuthContext.Provider value={{ user, loading }}>
+    <AuthContext.Provider value={{ 
+      user, 
+      loading, 
+      signInWithEmail, 
+      signUpWithEmail, 
+      signInWithGoogle 
+    }}>
       {children}
     </AuthContext.Provider>
   );