Tab pages use full page reloads (not AJAX) — function declarations inside
the IIFE are not in global scope, so onclick= attributes fail silently.
Fix: assign all onclick-callable functions to window.*
Replace vvRunById() calls with direct fetch (vvRunById is also IIFE-scoped
in scheduler.php, unavailable in the partnership tab context).
Add .catch() handlers so network/parse errors surface as alerts.