Simulating web request tick...
State file contents: {"fetch_market_data":1783037601,"run_simulation":1783037601}

Integration summary:
  On a real web request (Apache/nginx/PHP-FPM):
  1. User requests any page (e.g. /dashboard.php)
  2. Database.php is loaded → POOR_MAN_CRON_REGISTERED defined → shutdown registered
  3. Page renders and response is sent to browser
  4. PHP calls register_shutdown_function → PoorManCron::tick()
  5. tick() calls fastcgi_finish_request() (PHP-FPM) or flushes + closes (mod_php)
  6. Browser connection closes — user sees the page instantly
  7. PHP continues running in background for up to 120s
  8. Jobs that are overdue (>60s since last run) execute silently
  9. State file updated — next request within 60s skips them

No system cron needed. Works on any shared host.