MiscIndexer.py + MiscSearch.py + qf_Miscsearch_bridge.php + the two reset checkboxes are all confirmed working on the dev box — indexer runs, search runs, checkboxes render correctly.ISE_Manual.mdISE_Python_Scripts_Manual.mdUndefined index / language-file-load errors on the CustomSearch settings page turned out to be self-inflicted — Themes/default/languages/ ManageSettings.english.php (a stock SMF core file, unrelated to ISE) had been renamed, thinking it was unneeded. Renamed back, resolved.
install.xmlpackage-info.xmlinstall_ise.phpuninstall_ise.phpreset_ise_data.phpinstall.xml, not a separate package.