feat: add sessions table migration

Adds the `sessions` table for storing server-side session records.
Each row tracks a session ID (UUID), user ID, hashed refresh token,
device info, IP address, and timestamps.

pkg/migration/20260224113347.go

@@ -0,0 +1,52 @@
+// Vikunja is a to-do list application to facilitate your life.
+// Copyright 2018-present Vikunja and contributors. All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package migration
+
+import (
+	"time"
+
+	"src.techknowlogick.com/xormigrate"
+	"xorm.io/xorm"
+)
+
+type Session20260224113347 struct {
+	ID            string    `xorm:"varchar(36) not null unique pk"`
+	UserID        int64     `xorm:"bigint not null index"`
+	TokenHash     string    `xorm:"varchar(64) not null unique index"`
+	DeviceInfo    string    `xorm:"text"`
+	IPAddress     string    `xorm:"varchar(100)"`
+	IsLongSession bool      `xorm:"not null default false"`
+	LastActive    time.Time `xorm:"not null"`
+	Created       time.Time `xorm:"created not null"`
+}
+
+func (Session20260224113347) TableName() string {
+	return "sessions"
+}
+
+func init() {
+	migrations = append(migrations, &xormigrate.Migration{
+		ID:          "20260224113347",
+		Description: "Add sessions table",
+		Migrate: func(tx *xorm.Engine) error {
+			return tx.Sync(Session20260224113347{})
+		},
+		Rollback: func(tx *xorm.Engine) error {
+			return tx.DropTables(Session20260224113347{})
+		},
+	})
+}

pkg/models/models.go

@@ -66,6 +66,7 @@ func GetTables() []interface{} {
 		&TaskPosition{},
 		&TaskBucket{},
 		&TaskUnreadStatus{},
+		&Session{},
 	}
 }