help: add relay, context menu, find/replace, assets, super-buckets docs; fix flaky tests

Updates help screen with all undocumented features. Fixes F1 blocked
by input suppression filter (allow function keys). Stabilizes card-join
tests with poll loop instead of fixed sleep.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

config.php

@@ -1,7 +1,7 @@
 <?php
 
 define('APP_NAME', 'hyprcrd');
-define('APP_VERSION', '1.0.1');
+define('APP_VERSION', '1.0.2');
 
 // Database path — writable directory, outside webroot
 define('DB_PATH', __DIR__ . '/data/hyprcrd.db');