Follow-up to D917 (fixed the Apps link on systems/30-tech/index.php). With that link no longer pointing to systems/30-tech/apps/index.php, checked whether anything else referenced it -- nothing did, it was now fully orphaned. Rather than leave a dead, misleading placeholder reachable by direct URL or bookmark ('No apps listed yet' despite 11+ real apps existing), preserved the original content to Trash/systems/30-tech/apps/index_superseded_08_27_26_11amPT.php (byte-verified, 1402b) and replaced the live file with a simple PHP redirect to frontend/30-Tech/index.html, the real maintained hub.