feat: implement email verification and password reset features

- Add EmailTokenService for handling email verification and password reset tokens.
- Create EmailService for sending verification and reset emails via SMTP.
- Update AuthService to handle email verification status during login.
- Modify user registration to redirect to a check email screen instead of issuing a token.
- Implement resend verification email functionality.
- Add deep link handling for email verification and password reset in the mobile app.
- Update mobile app routes and components to support new email verification flow.
- Enhance error handling for unverified emails during login attempts.
- Update configuration to include SMTP settings for email service.

backend/src/application/auth_service.rs

@@ -60,16 +60,14 @@ impl AuthService {
     // Registro com email/senha
     // -------------------------------------------------------------------------
 
-    pub async fn register(&self, email: String, password: String) -> Result<TokenPair, AppError> {
-        if let Some(_) = self.user_repo.find_by_email(&email).await? {
+    pub async fn register(&self, email: String, password: String) -> Result<User, AppError> {
+        if self.user_repo.find_by_email(&email).await?.is_some() {
             return Err(AppError::Conflict("email already registered".into()));
         }
 
         let password_hash = hash_password(&password)?;
-        let user = User::new_with_password(email, password_hash);
-        let user = self.user_repo.create(&user).await?;
-
-        self.issue_token_pair(&user)
+        let new_user = User::new_with_password(email, password_hash);
+        Ok(self.user_repo.create(&new_user).await?)
     }
 
     // -------------------------------------------------------------------------
@@ -86,6 +84,10 @@ impl AuthService {
         let hash = user.password_hash.as_deref().ok_or(AppError::Unauthorized)?;
         verify_password(&password, hash)?;
 
+        if !user.email_verified {
+            return Err(AppError::EmailNotVerified);
+        }
+
         self.issue_token_pair(&user)
     }