2026.6.0 send support (#7346)

* 2026.6.0 send support

* Prevent creating and editing a Send with email verification

* Review fixes

---------

Co-authored-by: Timshel <timshel@users.noreply.github.com>

src/auth.rs

@@ -1,3 +1,8 @@
+#[path = "auth/send.rs"]
+pub mod send;
+pub type SendTokens = send::SendTokens;
+pub type SendHeaders = send::SendHeaders;
+
 use std::{
     env,
     net::IpAddr,
@@ -487,6 +492,16 @@ pub struct BasicJwtClaims {
     pub sub: String,
 }
 
+impl BasicJwtClaims {
+    pub fn expires_in(&self) -> i64 {
+        self.exp - Utc::now().timestamp()
+    }
+
+    pub fn token(&self) -> String {
+        encode_jwt(&self)
+    }
+}
+
 pub fn generate_delete_claims(uuid: String) -> BasicJwtClaims {
     let time_now = Utc::now();
     let expire_hours = i64::from(CONFIG.invitation_expiration_hours());