Phase 2: Eliminate ApplicationDbContext from domain controllers

Migrated InvoicesController, QuotesController, JobsController, BillsController,
PurchaseOrdersController, and CustomersController to route all data access
through IUnitOfWork typed/generic repositories instead of injecting
ApplicationDbContext directly.

New typed repositories added: IJobRepository (GetScheduledJobsForDateAsync,
GetActiveJobsForMobileAsync, LoadForCostingAsync), INotificationLogRepository
(GetLatestForJobAsync, GetAllForJobAsync), IQuoteRepository (GetItemsWithCoatsAsync
with CatalogItem eager load + AsNoTracking), and IJobRepository.GetOrphanedConversionJobAsync.

All EF complex include chains relocated into repository methods; controllers now
call named query methods rather than composing raw IQueryable chains.

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

src/PowderCoating.Web/Controllers/CustomersController.cs

@@ -25,7 +25,6 @@ public class CustomersController : Controller
     private readonly INotificationService _notificationService;
     private readonly ISubscriptionService _subscriptionService;
     private readonly ITenantContext _tenantContext;
-    private readonly ApplicationDbContext _context;
     private readonly UserManager<ApplicationUser> _userManager;
 
     public CustomersController(
@@ -35,7 +34,6 @@ public class CustomersController : Controller
         INotificationService notificationService,
         ISubscriptionService subscriptionService,
         ITenantContext tenantContext,
-        ApplicationDbContext context,
         UserManager<ApplicationUser> userManager)
     {
         _unitOfWork = unitOfWork;
@@ -44,7 +42,6 @@ public class CustomersController : Controller
         _notificationService = notificationService;
         _subscriptionService = subscriptionService;
         _tenantContext = tenantContext;
-        _context = context;
         _userManager = userManager;
     }
 
@@ -555,11 +552,9 @@ public class CustomersController : Controller
                 try { await _notificationService.NotifySmsConsentGrantedAsync(customer); }
                 catch (Exception ex) { _logger.LogWarning(ex, "SMS consent confirmation failed for customer {Id}", customer.Id); }
 
-                var smsLog = await _context.NotificationLogs
-                    .IgnoreQueryFilters()
-                    .Where(n => n.CustomerId == customer.Id)
-                    .OrderByDescending(n => n.SentAt)
-                    .FirstOrDefaultAsync();
+                var logs = await _unitOfWork.NotificationLogs.FindAsync(
+                    n => n.CustomerId == customer.Id, ignoreQueryFilters: true);
+                var smsLog = logs.OrderByDescending(n => n.SentAt).FirstOrDefault();
                 this.SetNotificationResultToast(smsLog);
             }
 
@@ -679,11 +674,9 @@ public class CustomersController : Controller
                 try { await _notificationService.NotifySmsConsentGrantedAsync(customer); }
                 catch (Exception ex) { _logger.LogWarning(ex, "SMS consent confirmation failed for customer {Id}", customer.Id); }
 
-                var smsLog = await _context.NotificationLogs
-                    .IgnoreQueryFilters()
-                    .Where(n => n.CustomerId == customer.Id)
-                    .OrderByDescending(n => n.SentAt)
-                    .FirstOrDefaultAsync();
+                var logs = await _unitOfWork.NotificationLogs.FindAsync(
+                    n => n.CustomerId == customer.Id, ignoreQueryFilters: true);
+                var smsLog = logs.OrderByDescending(n => n.SentAt).FirstOrDefault();
                 this.SetNotificationResultToast(smsLog);
             }