Full pass over frontend/30-Tech/ following up on the 08/26-27 sweep + this session's naming-collision fix. Checked every remaining loose item: (1) apps/Inventory/davidslaptop-reference.html and its _TEST copy -- both already 404, prior 08/25 personal-data migration already removed them, nothing to do. (2) php-ed/ -- 6 files, all live (200), internal next/prev nav chain verified intact (index->01->02->03->04->05->back to index, no broken links), each has a working but non-standard back-link instead of the full platform Top Bar/Bottom Tabs chrome -- left as-is (matches existing MINOR status in page-inventory.html, functional not broken, didn't rebuild UI chrome on 6 files without being asked). (3) 'Applications Reference' hub link to systems/30-tech/laboratory/apps-hub.html -- verified live (200), a legitimate frontend-to-backend bridge link, not a duplicate or mess. (4) check_temp.php (flagged open-question in the prior tracker) -- already 404, moot. (5) Re-verified all 11 real app files plus the hub itself all return 200. Frontend/30-Tech/ is clean modulo the one still-open item (android-library.html live-file retirement, waiting on Server[40], transfer 4264).