Fix inline edit not updating pricing breakdown on Job Details

Jobs/PatchItem now returns the full breakdown (itemsSubtotal,
subtotalBeforeDiscount, subtotalAfterDiscount, taxAmount) so all rows
in the pricing card update live without a page refresh.

Added data-pb attributes to the matching spans in the pricing panel.
Updated window.inlineItemEdit.totals config for jobs to map each
response key to its DOM selector.

updateTotals in inline-item-edit.js is now fully generic — cfg.totals
keys must match server response property names directly, eliminating
the old hardcoded tax/taxAmount and balance/balanceDue mismatches.
Updated Quote and Invoice configs accordingly (tax→taxAmount,
balance→balanceDue).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Web/Views/Quotes/Details.cshtml

@@ -2268,9 +2268,9 @@
             patchUrl: '@Url.Action("PatchItem", "Quotes")',
             canEdit:  true,
             totals: {
-                subtotal: '#quote-subtotal',
-                tax:      '#quote-tax',
-                total:    '#quote-total'
+                subtotal:  '#quote-subtotal',
+                taxAmount: '#quote-tax',
+                total:     '#quote-total'
             }
         };
     </script>