Fix company logo missing from PDFs and add AI photo save logging

When a tenant uploads a logo it is stored in Azure Blob Storage and
LogoData (the legacy DB byte[]) is cleared. All PDF controllers were
still reading the now-null LogoData, so logos never appeared on any
PDF after upload. Fixed by injecting ICompanyLogoService into all six
affected controllers (Quotes, Invoices, Deposits, GiftCertificates,
PurchaseOrders, CatalogItems) and loading the blob-stored logo first
before falling back to the legacy DB field.

Also added structured logging to the AI photo promotion path in
QuotesController Create/Edit POST so upload failures are visible in
production logs instead of silently swallowed.

Added onclick safety net to the Create and Edit quote submit buttons
so dynamically-injected hidden fields (AiPhotoTempIds) are written
before iOS Safari collects the form data on submit.

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

src/PowderCoating.Web/Controllers/InvoicesController.cs

@@ -27,6 +27,7 @@ public class InvoicesController : Controller
     private readonly ITenantContext _tenantContext;
     private readonly INotificationService _notificationService;
     private readonly IAccountBalanceService _accountBalanceService;
+    private readonly ICompanyLogoService _logoService;
 
     public InvoicesController(
         IUnitOfWork unitOfWork,
@@ -36,7 +37,8 @@ public class InvoicesController : Controller
         IPdfService pdfService,
         ITenantContext tenantContext,
         INotificationService notificationService,
-        IAccountBalanceService accountBalanceService)
+        IAccountBalanceService accountBalanceService,
+        ICompanyLogoService logoService)
     {
         _unitOfWork = unitOfWork;
         _mapper = mapper;
@@ -46,6 +48,7 @@ public class InvoicesController : Controller
         _tenantContext = tenantContext;
         _notificationService = notificationService;
         _accountBalanceService = accountBalanceService;
+        _logoService = logoService;
     }
 
     // -----------------------------------------------------------------------
@@ -1624,8 +1627,9 @@ public class InvoicesController : Controller
             DefaultTerms = prefs?.InDefaultTerms
         };
 
+        var (logoData, logoContentType) = await LoadCompanyLogoAsync(company);
         var dto = await BuildInvoiceDtoAsync(invoice);
-        return await _pdfService.GenerateInvoicePdfAsync(dto, company?.LogoData, company?.LogoContentType, companyInfo, template);
+        return await _pdfService.GenerateInvoicePdfAsync(dto, logoData, logoContentType, companyInfo, template);
     }
 
     // -----------------------------------------------------------------------
@@ -2444,4 +2448,19 @@ public class InvoicesController : Controller
 
         return false;
     }
+
+    /// <summary>
+    /// Returns logo bytes and content type for PDF generation.
+    /// Prefers blob-stored logos (LogoFilePath) over the legacy DB column (LogoData).
+    /// </summary>
+    private async Task<(byte[]? LogoData, string? LogoContentType)> LoadCompanyLogoAsync(Company? company)
+    {
+        if (company == null) return (null, null);
+        if (!string.IsNullOrEmpty(company.LogoFilePath))
+        {
+            var (ok, content, contentType, _) = await _logoService.GetCompanyLogoAsync(company.LogoFilePath);
+            if (ok) return (content, contentType);
+        }
+        return (company.LogoData, company.LogoContentType);
+    }
 }