Davidson CI testing & AI refinement

api/purchase-boolean.php

@@ -9,19 +9,23 @@ $pdo = getDbConnection();
 enforce_session_version($pdo);
 
 $userId = $_SESSION['user_id'] ?? null;
+$waitSince = $_SESSION['purchase_wait_since'] ?? null;
 $result = false;
 
-if ($userId !== null) {
+if ($userId !== null && $waitSince !== null) {
     $tableExists = $pdo->query("SELECT name FROM sqlite_master WHERE type = 'table' AND name = 'transactions'")->fetch();
 
     if ($tableExists) {
-        $stmt = $pdo->prepare("
+        // Matches processing.php's session-anchored wait start rather than a sliding
+        // "now minus N seconds" window, so this keeps recognizing a completed purchase
+        // no matter how long polling has been going on.
+        $stmt = $pdo->prepare('
             SELECT 1 FROM transactions
             WHERE user_id = :user_id
-              AND created_at >= datetime('now', '-40 seconds')
+              AND created_at >= :wait_since
             LIMIT 1
-        ");
-        $stmt->execute(['user_id' => (int) $userId]);
+        ');
+        $stmt->execute(['user_id' => (int) $userId, 'wait_since' => $waitSince]);
         $result = (bool) $stmt->fetch();
     }
 }