v0.1.1 Beacon through index.php, no CLI tick on APCu

Fixed

• The beacon URL goes through index.php explicitly, so a root redirect (language plugin, static front page) cannot swallow it before the plugin answers. Filter bsr_beacon_url_base.
• On the APCu backend the minute tick refuses to run from the command line, where it cannot see the counters PHP-FPM wrote; the inline guard on the next front-end request does the work instead.