feat: per-server notification thresholds with alert on agent metrics push

src/Models/Server.php

@@ -410,6 +410,28 @@ class Server
         );
     }
 
+    public function getAccessibleUserIds(int $serverId): array
+    {
+        $direct = $this->db->fetchCol(
+            'SELECT user_id FROM server_user WHERE server_id = ? AND status = \'active\'',
+            [$serverId]
+        );
+
+        $team = $this->db->fetchCol(
+            'SELECT DISTINCT tu.user_id FROM team_user tu
+             JOIN team_server ts ON tu.team_id = ts.team_id
+             WHERE ts.server_id = ? AND tu.status = \'active\' AND ts.status = \'active\'',
+            [$serverId]
+        );
+
+        $owner = $this->db->fetchCol(
+            'SELECT created_by FROM servers WHERE id = ? AND status = \'active\'',
+            [$serverId]
+        );
+
+        return array_unique(array_merge($direct, $team, $owner));
+    }
+
     public function findByAgentKey(string $key): ?array
     {
         $server = $this->db->fetch(