Item #4: centralize timezone, collapse the 16 pod branches to loops

- includes/db.php now defines PQS_TIMEZONE and sets it on include; the 9 files
  that hardcoded date_default_timezone_set('America/Chicago') drop the call
  (main pages already load db.php; display includes now require it).
- console.php: pod load and the 16 pod-checkbox lines collapsed into loops over
  a $pods array (fixed 16 kept - hardware max). Output unchanged.

Verified: timezone resolves to America/Chicago via the constant; console commit,
config update, and pod-checkbox rendering all correct; registration suite green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

includes/getreg.php

@@ -23,7 +23,7 @@ $(document).ready(function() {
 });
 </script>
 <?php
-date_default_timezone_set('America/Chicago');
+require_once __DIR__ . '/db.php';
 $numplayers = 0;
 $link = mysqli_connect('localhost', 'pqs', 'pqs') or die('Could not connect: ' . mysqli_error($link));
 mysqli_select_db($link, 'pqs') or die('Could not select database');