Hide email controls when no email on file; show SMS hint for quote/job events

- Quotes Create/Edit: hide 'Send via email' checkbox when customer has no
  email; show badge 'send via SMS from details' or 'SMS consent required'
  when customer has a mobile number. JS responds to customer dropdown change.
- Quotes Details: hide 'Send Quote via Email' button and approval email
  checkbox; hide SMS button when no mobile; show consent-required note.
- Jobs Details (Mark Complete modal): hide email checkbox; show
  'SMS notification will be sent' badge or consent-required note.
- Jobs Index (status modal): hide email row when customer has no email.
- Jobs Edit: hide 'Notify customer if status changes' when no email.
- Invoices Details: hide Send/Re-send buttons when no email (vs. disabled).

DTOs: added CustomerEmail + CustomerNotifyByEmail to JobDto/JobListDto;
added CustomerNotifyByEmail/CustomerMobilePhone/CustomerNotifyBySms to
QuoteDto. Mapped in JobProfile and QuotesController customer blocks.

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

docs/Sales Tax Report.txt.bak

@@ -0,0 +1,32 @@
+ I looked through the reporting code, and I do not see a dedicated sales tax report.
+
+  What exists today:
+
+  - The report menu has Financial Summary, AR Aging, Balance Sheet, and Sales & Income, but no sales-tax-specific report card in /Y:/PCC/
+    PowderCoatingApp/src/PowderCoating.Web/Views/Reports/Landing.cshtml:147 and /Y:/PCC/PowderCoatingApp/src/PowderCoating.Web/Views/Reports/
+    Landing.cshtml:211.
+  - The reporting service only exposes four finance reports in /Y:/PCC/PowderCoatingApp/src/PowderCoating.Application/Interfaces/
+    IFinancialReportService.cs:13 through /Y:/PCC/PowderCoatingApp/src/PowderCoating.Application/Interfaces/IFinancialReportService.cs:22.
+  - Sales & Income does surface tax, but only as a total and per-invoice column in /Y:/PCC/PowderCoatingApp/src/PowderCoating.Infrastructure/
+    Services/FinancialReportService.cs:406, /Y:/PCC/PowderCoatingApp/src/PowderCoating.Infrastructure/Services/FinancialReportService.cs:419,
+    and /Y:/PCC/PowderCoatingApp/src/PowderCoating.Web/Views/Reports/SalesAndIncome.cshtml:268.
+  - The good news is the underlying data is already there: invoices store TaxAmount and SalesTaxAccountId in /Y:/PCC/PowderCoatingApp/src/
+    PowderCoating.Core/Entities/Invoice.cs:23 and /Y:/PCC/PowderCoatingApp/src/PowderCoating.Core/Entities/Invoice.cs:55, and the chart of
+    accounts seeds 2200 Sales Tax Payable in /Y:/PCC/PowderCoatingApp/src/PowderCoating.Infrastructure/Services/SeedDataService.Accounts.cs:59.
+
+  Plan I’d recommend:
+
+  1. Add a new Sales Tax report under Reports > Finance with date range filters, matching the existing report pattern in /Y:/PCC/PowderCoatingApp/
+     src/PowderCoating.Web/Controllers/ReportsController.cs:993.
+  2. Build a SalesTaxReportDto plus GetSalesTaxReportAsync(...) in the reporting interface/service.
+  3. Phase 1 report contents:
+
+  - Total taxable sales
+  - Total non-taxed sales
+  - Total sales tax billed
+  - Breakdown by sales-tax liability account
+  - Breakdown by month
+  - Invoice detail grid: invoice date, invoice #, customer, subtotal, tax %, tax amount, total, amount paid, balance due, status, tax account
+
+  4. Add PDF export, and probably CSV too, since this is the kind of report people hand to accountants.
+  5. Put a report card on the Reports landing page and gate it the same way as the other accounting reports.