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/PurchaseOrdersController.cs

@@ -23,19 +23,22 @@ public class PurchaseOrdersController : Controller
     private readonly UserManager<ApplicationUser> _userManager;
     private readonly ILogger<PurchaseOrdersController> _logger;
     private readonly IPdfService _pdfService;
+    private readonly ICompanyLogoService _logoService;
 
     public PurchaseOrdersController(
         IUnitOfWork unitOfWork,
         IMapper mapper,
         UserManager<ApplicationUser> userManager,
         ILogger<PurchaseOrdersController> logger,
-        IPdfService pdfService)
+        IPdfService pdfService,
+        ICompanyLogoService logoService)
     {
         _unitOfWork = unitOfWork;
         _mapper = mapper;
         _userManager = userManager;
         _logger = logger;
         _pdfService = pdfService;
+        _logoService = logoService;
     }
 
     // -----------------------------------------------------------------------
@@ -684,8 +687,9 @@ public class PurchaseOrdersController : Controller
                 PrimaryContactEmail  = company?.PrimaryContactEmail
             };
 
+            var (logoData, logoContentType) = await LoadCompanyLogoAsync(company);
             var pdfBytes = await _pdfService.GeneratePurchaseOrderPdfAsync(
-                dto, company?.LogoData, company?.LogoContentType, companyInfo);
+                dto, logoData, logoContentType, companyInfo);
 
             return File(pdfBytes, "application/pdf", $"{po.PoNumber}.pdf");
         }
@@ -847,4 +851,15 @@ public class PurchaseOrdersController : Controller
         vendors.Insert(0, new SelectListItem("All Vendors", ""));
         ViewBag.VendorList = vendors;
     }
+
+    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);
+    }
 }