[web-v2026.7.1] 2FA userVerificationToken for Authenticator, Email and Duo (#7563)

* 2FA using userVerificationToken

* Fix 2FA Yubikeys

* TwoFactor.find_by_user_and_type take enum parameter not i32

* log_user_event take enum parameter not i32

* Fix 2fa webauthn

* Prevent 2FA claims reuse

* 2fa webauthn return keys when deleting

* 2fa reset twofactor_remember

* Reject 2FA verification tokens issued for another provider

The Email and Duo claims only have optional fields, so a userVerificationToken minted for another
provider deserialized into them and was accepted. Each provider's claims now reject unknown fields,
with a test that every token only parses as its own provider.

Also fix the email 2FA login in the Playwright user setup, which used an undefined `mailBuffer`.

---------

Co-authored-by: Timshel <timshel@users.noreply.github.com>
Co-authored-by: Daniel García <dani-garcia@users.noreply.github.com>

src/api/identity.rs

@@ -118,7 +118,7 @@ async fn login(data: Form<ConnectData>, client_header: ClientHeaders, conn: DbCo
         match &login_result {
             Ok(_) => {
                 log_user_event(
-                    EventType::UserLoggedIn as i32,
+                    EventType::UserLoggedIn,
                     &user_id,
                     client_header.device_type,
                     &client_header.ip.ip,
@@ -128,8 +128,7 @@ async fn login(data: Form<ConnectData>, client_header: ClientHeaders, conn: DbCo
             }
             Err(e) => {
                 if let Some(ev) = e.get_event() {
-                    log_user_event(ev.event as i32, &user_id, client_header.device_type, &client_header.ip.ip, &conn)
-                        .await;
+                    log_user_event(ev.event, &user_id, client_header.device_type, &client_header.ip.ip, &conn).await;
                 }
             }
         }
@@ -904,7 +903,7 @@ async fn twofactor_auth(
 
             enforce_2fa_policy(user, &user.uuid, device.atype, &ip.ip, conn).await?;
 
-            log_user_event(EventType::UserRecovered2fa as i32, &user.uuid, device.atype, &ip.ip, conn).await;
+            log_user_event(EventType::UserRecovered2fa, &user.uuid, device.atype, &ip.ip, conn).await;
 
             if CONFIG.mail_enabled()
                 && let Err(e) =
@@ -974,7 +973,7 @@ async fn json_err_twofactor(providers: &[i32], user: &User, data: &ConnectData,
             }
 
             Some(tf_type @ TwoFactorType::YubiKey) => {
-                let Some(twofactor) = TwoFactor::find_by_user_and_type(user_id, tf_type as i32, conn).await else {
+                let Some(twofactor) = TwoFactor::find_by_user_and_type(user_id, tf_type, conn).await else {
                     err!("No YubiKey devices registered")
                 };
 
@@ -986,7 +985,7 @@ async fn json_err_twofactor(providers: &[i32], user: &User, data: &ConnectData,
             }
 
             Some(tf_type @ TwoFactorType::Email) => {
-                let Some(twofactor) = TwoFactor::find_by_user_and_type(user_id, tf_type as i32, conn).await else {
+                let Some(twofactor) = TwoFactor::find_by_user_and_type(user_id, tf_type, conn).await else {
                     err!("No twofactor email registered")
                 };