Fix: SettingsController in install.sh aktualisiert (rmmagent[general] Parsing)

backend/db/postgres.go

@@ -416,6 +416,27 @@ func (d *Database) GetAgentByHostname(hostname string) (*models.Agent, error) {
 	return &a, nil
 }
 
+func (d *Database) GetAgentByName(name string) (*models.Agent, error) {
+	var a models.Agent
+	var lastHB sql.NullTime
+
+	err := d.db.QueryRow(
+		"SELECT id, name, hostname, ip, opnsense_version, registered_at, last_heartbeat FROM agents WHERE name = $1 LIMIT 1",
+		name,
+	).Scan(&a.ID, &a.Name, &a.Hostname, &a.IP, &a.OPNsenseVersion, &a.RegisteredAt, &lastHB)
+
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	if lastHB.Valid {
+		a.LastHeartbeat = &lastHB.Time
+	}
+	return &a, nil
+}
+
 func (d *Database) GetAgent(id string) (*models.Agent, *models.SystemData, error) {
 	var a models.Agent
 	var lastHB sql.NullTime
@@ -505,6 +526,13 @@ func (d *Database) SetUpdateRequestAll(requested bool) (int64, error) {
 	return res.RowsAffected()
 }
 
+// Agent-Version direkt aus DB lesen (vor dem Update durch Heartbeat)
+func (d *Database) GetAgentVersionFromDB(id string) string {
+	var version string
+	d.db.QueryRow("SELECT agent_version FROM agents WHERE id = $1", id).Scan(&version)
+	return version
+}
+
 // Agent-Firmware speichern (pro Plattform)
 func (d *Database) SaveAgentFirmware(version, platform, hash string, binary []byte) error {
 	_, err := d.db.Exec(`