FX.133 TakeoffCraft: item list quantity label broke the page (itq0 not defined)

Found while testing TKW.1 in the real page: qtyLabel in takeoffcraft.js (a Discord member) read itq0.conds and t.conds, a half-finished rename of the quantity map (it.conds and tq0.conds are right), so the page threw on load and no browser test could open. Corrected the two names. Separate, not fixed: tools/takeoffcraft-test/browser-propgrid.mjs fails in a fresh profile because the shell Auto-focus panel folds the item grid; browser-weights-temps.mjs switches it off first.