feat: store user agent with sessions

gpodder_sqlite/migrations/2025-03-29-141707_session_user_agent/down.sql

@@ -0,0 +1,2 @@
+alter table sessions
+    drop column user_agent;

gpodder_sqlite/migrations/2025-03-29-141707_session_user_agent/up.sql

@@ -0,0 +1,2 @@
+alter table sessions
+    add column user_agent text;

gpodder_sqlite/src/models/session.rs

@@ -10,6 +10,7 @@ pub struct Session {
     pub id: i64,
     pub user_id: i64,
     pub last_seen: i64,
+    pub user_agent: Option<String>,
 }
 
 impl Session {

gpodder_sqlite/src/repository/auth.rs

@@ -59,6 +59,7 @@ impl gpodder::AuthStore for SqliteRepository {
                 id: session.id,
                 last_seen: DateTime::from_timestamp(session.last_seen, 0).unwrap(),
                 user: user.into(),
+                user_agent: session.user_agent.clone(),
             })),
             Ok(None) => Ok(None),
             Err(err) => Err(DbError::from(err).into()),
@@ -79,6 +80,7 @@ impl gpodder::AuthStore for SqliteRepository {
             id: session.id,
             user_id: session.user.id,
             last_seen: session.last_seen.timestamp(),
+            user_agent: session.user_agent.clone(),
         }
         .insert_into(sessions::table)
         .execute(&mut self.pool.get().map_err(DbError::from)?)

gpodder_sqlite/src/schema.rs

@@ -43,6 +43,7 @@ diesel::table! {
         id -> BigInt,
         user_id -> BigInt,
         last_seen -> BigInt,
+        user_agent -> Nullable<Text>,
     }
 }