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/Controllers/JobsController.cs

@@ -4264,9 +4264,18 @@ public class JobsController : Controller
         await _unitOfWork.Jobs.UpdateAsync(job);
         await _unitOfWork.CompleteAsync();
 
+        // Deserialize again after possible re-serialization to get final values
+        QuotePricingBreakdownDto? pbFinal = null;
+        if (!string.IsNullOrEmpty(job.PricingBreakdownJson))
+            pbFinal = JsonSerializer.Deserialize<QuotePricingBreakdownDto>(job.PricingBreakdownJson);
+
         return Json(new {
-            lineTotal  = item.TotalPrice,
-            finalPrice = job.FinalPrice
+            lineTotal               = item.TotalPrice,
+            finalPrice              = job.FinalPrice,
+            itemsSubtotal           = pbFinal?.ItemsSubtotal,
+            subtotalBeforeDiscount  = pbFinal?.SubtotalBeforeDiscount,
+            subtotalAfterDiscount   = pbFinal?.SubtotalAfterDiscount,
+            taxAmount               = pbFinal?.TaxAmount
         });
     }
 }