feat(db): add license_status table migration

Add database migration for the license_status table that stores instance
ID, cached license validation response, and validation timestamps.

pkg/license/license.go

@@ -108,10 +108,9 @@ func (f *Feature) UnmarshalJSON(data []byte) error {
 
 // Status represents the license_status table.
 type Status struct {
-	ID          int64     `xorm:"bigint autoincr not null unique pk" json:"id"`
-	InstanceID  string    `xorm:"varchar(36) not null" json:"instance_id"`
-	LicenseKey  string    `xorm:"text not null" json:"-"`
-	Response    string    `xorm:"text not null" json:"response"`
+	ID         int64  `xorm:"bigint autoincr not null unique pk" json:"id"`
+	InstanceID string `xorm:"varchar(36) not null" json:"instance_id"`
+	Response   string `xorm:"text not null" json:"response"`
 	ValidatedAt time.Time `xorm:"datetime null" json:"validated_at"`
 	Created     time.Time `xorm:"created not null" json:"created"`
 	Updated     time.Time `xorm:"updated not null" json:"updated"`
@@ -163,12 +162,6 @@ func Init() {
 		log.Errorf("Error loading cached license status: %s", err)
 	}
 
-	// If cache exists but key changed, invalidate it
-	if cached != nil && cached.LicenseKey != key {
-		log.Infof("License key changed, invalidating cache.")
-		cached = nil
-	}
-
 	log.Debugf("Performing initial license check...")
 
 	// Perform initial license check
@@ -188,7 +181,7 @@ func Init() {
 		log.Warningf("License key is invalid: %s. Pro features will not be available.", resp.Message)
 	default:
 		applyResponse(resp)
-		if err := cacheResponse(key, resp); err != nil {
+		if err := cacheResponse(resp); err != nil {
 			log.Errorf("Error caching license response: %s", err)
 		}
 		log.Infof("License valid. Pro features enabled.")
@@ -254,7 +247,6 @@ func loadOrCreateInstanceID() (string, error) {
 	id := uuid.New().String()
 	_, err = s.Insert(&Status{
 		InstanceID: id,
-		LicenseKey: "",
 		Response:   "{}",
 	})
 	if err != nil {
@@ -321,7 +313,7 @@ func degradeToFree(reason string) {
 	log.Warningf("%s Pro features have been disabled.", reason)
 }
 
-func cacheResponse(key string, resp *Response) error {
+func cacheResponse(resp *Response) error {
 	raw, err := serializeResponse(resp)
 	if err != nil {
 		return err
@@ -331,8 +323,7 @@ func cacheResponse(key string, resp *Response) error {
 	defer s.Close()
 
 	// Update the existing row
-	_, err = s.Where("1=1").Update(&Status{
-		LicenseKey:  key,
+	_, err = s.Where("instance_id = ?", instanceID).Update(&Status{
 		Response:    raw,
 		ValidatedAt: time.Now(),
 	})
@@ -394,7 +385,7 @@ func backgroundLoop(key string) {
 		currentState.mu.RUnlock()
 
 		applyResponse(resp)
-		if err := cacheResponse(key, resp); err != nil {
+		if err := cacheResponse(resp); err != nil {
 			log.Errorf("Error caching license response: %s", err)
 		}
 
@@ -408,8 +399,7 @@ func clearCache() error {
 	s := db.NewSession()
 	defer s.Close()
 
-	_, err := s.Where("1=1").Update(&Status{
-		LicenseKey:  "",
+	_, err := s.Where("instance_id = ?", instanceID).Update(&Status{
 		Response:    "{}",
 		ValidatedAt: time.Time{},
 	})

pkg/migration/20260324120000.go

@@ -0,0 +1,50 @@
+// 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 LicenseStatus20260324120000 struct {
+	ID          int64     `xorm:"bigint autoincr not null unique pk"`
+	InstanceID  string    `xorm:"varchar(36) not null"`
+	Response    string    `xorm:"text not null"`
+	ValidatedAt time.Time `xorm:"datetime null"`
+	Created     time.Time `xorm:"created not null"`
+	Updated     time.Time `xorm:"updated not null"`
+}
+
+func (LicenseStatus20260324120000) TableName() string {
+	return "license_status"
+}
+
+func init() {
+	migrations = append(migrations, &xormigrate.Migration{
+		ID:          "20260324120000",
+		Description: "Add license_status table",
+		Migrate: func(tx *xorm.Engine) error {
+			return tx.Sync(LicenseStatus20260324120000{})
+		},
+		Rollback: func(tx *xorm.Engine) error {
+			return tx.DropTables(LicenseStatus20260324120000{})
+		},
+	})
+}