feat: add one pull plug and play feature

server/internal/store/store.go

@@ -138,6 +138,11 @@ func (s *Store) UpdateAgentAlias(id, alias string) error {
 	return err
 }
 
+func (s *Store) DeleteAgent(id string) error {
+	_, err := s.db.Exec(`DELETE FROM agents WHERE id = ?`, id)
+	return err
+}
+
 // ── Users ─────────────────────────────────────────────────────────────────────
 
 func (s *Store) GetUserHash(username string) (string, error) {