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>

src/PowderCoating.Web/Controllers/JobsController.cs

@@ -1279,6 +1279,9 @@ public class JobsController : Controller
                 dto.SendEmailOnStatusChange = (bool)(ViewBag.EmailDefaultOnStatusChange ?? false);
             }
 
+            // Used by view to hide the email checkbox when the customer has no email address on file
+            ViewBag.CustomerEmail = job.Customer?.Email;
+
             return View(dto);
         }
         catch (Exception ex)

src/PowderCoating.Web/Controllers/QuotesController.cs

@@ -533,6 +533,9 @@ public class QuotesController : Controller
                     quoteDto.CustomerContactLastName = customer.ContactLastName;
                     quoteDto.CustomerEmail = customer.Email;
                     quoteDto.CustomerPhone = customer.Phone;
+                    quoteDto.CustomerNotifyByEmail = customer.NotifyByEmail;
+                    quoteDto.CustomerMobilePhone = customer.MobilePhone;
+                    quoteDto.CustomerNotifyBySms = customer.NotifyBySms;
                 }
             }
 
@@ -1264,6 +1267,8 @@ public class QuotesController : Controller
                 ViewBag.CustomerContactName = $"{quote.Customer.ContactFirstName} {quote.Customer.ContactLastName}".Trim();
                 ViewBag.CustomerEmail = quote.Customer.Email ?? "";
                 ViewBag.CustomerPhone = quote.Customer.Phone ?? "";
+                ViewBag.CustomerNotifyBySms = quote.Customer.NotifyBySms;
+                ViewBag.CustomerMobilePhone = quote.Customer.MobilePhone ?? "";
             }
 
             var editCurrentUser = await _userManager.GetUserAsync(User);
@@ -2627,6 +2632,16 @@ public class QuotesController : Controller
             .Where(c => !c.NotifyByEmail)
             .Select(c => c.Id)
             .ToHashSet();
+        // Customers with no email address on file — JS hides the email section entirely
+        ViewBag.CustomerNoEmailIds = customers
+            .Where(c => string.IsNullOrWhiteSpace(c.Email))
+            .Select(c => c.Id)
+            .ToHashSet();
+        // Customers who have given SMS consent with a mobile number on file
+        ViewBag.CustomerSmsConsentIds = customers
+            .Where(c => c.NotifyBySms && !string.IsNullOrWhiteSpace(c.MobilePhone))
+            .Select(c => c.Id)
+            .ToHashSet();
         // Stored separately so views can restore the company default when switching away from an exempt customer
         // (ViewBag.CompanyTaxPercent is set by the calling action if it has access to operatingCosts)
         if (ViewBag.CompanyTaxPercent == null && customers.Any())
@@ -2817,6 +2832,9 @@ public class QuotesController : Controller
                 quoteDto.CustomerContactLastName = customer.ContactLastName;
                 quoteDto.CustomerEmail = customer.Email;
                 quoteDto.CustomerPhone = customer.Phone;
+                quoteDto.CustomerNotifyByEmail = customer.NotifyByEmail;
+                quoteDto.CustomerMobilePhone = customer.MobilePhone;
+                quoteDto.CustomerNotifyBySms = customer.NotifyBySms;
             }
         }