summary
Tool/page maintenance overhaul: fixed dba_write_api.php + TASKGATE.php bugs, built/rebuilt Tools Index, Maintenance Schedule + Log, restored Page Inventory, resolved backend-index naming confusion, logged T2538 consolidation task
work_done
dba_write_api.php registry fix; deployed Tech inventory.html patch; TASKGATE.php SOP-INDEX parsing bug fix + lean-by-default patch; built Tools Index/Maintenance Schedule/Maintenance Log pages; Page Inventory restore+completeness pass; Info Index Tracking section; backend/index.html links box; T2538 logged; tools-index-maintenance duty broadened