Extract shared catalog enrichment into EnrichFromCatalogAsync helper

AiLookup and ScanLabel were running separate catalog lookup + auto-contribute
code paths. Both now go through EnrichFromCatalogAsync so any future change
to catalog logic only needs to be made once.

- EnrichFromCatalogAsync: private helper that finds a matching PowderCatalogItem
  by SKU + manufacturer, overwrites AI-inferred spec fields with catalog values
  (catalog is authoritative), fills gaps for URL/price fields with ??=, and
  optionally auto-contributes new entries to the platform catalog. Returns
  (wasInCatalog, addedToCatalog) for callers that show UI badges.
- AiLookup: now calls EnrichFromCatalogAsync then ApplyTdsCureFallbackAsync
  before returning — same enrichment pipeline as ScanLabel.
- ScanLabel: replaced ~50-line inline catalog block with two helper calls.
  Return statement simplified from catalogMatch?.X ?? aiResult.X to just
  aiResult.X since EnrichFromCatalogAsync already merged catalog values in.

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

src/PowderCoating.Application/Interfaces/IInventoryAiLookupService.cs

@@ -54,4 +54,11 @@ public interface IInventoryAiLookupService
     /// using Claude vision. Used by the in-browser label scanner.
     /// </summary>
     Task<InventoryAiLookupResult> ScanLabelAsync(string base64Image, string mediaType);
+
+    /// <summary>
+    /// Fetches a Technical Data Sheet URL and extracts cure temperature and cure time.
+    /// Called when the main lookup found a TDS URL but cure specs are still missing.
+    /// Returns Success=false silently (no UI error) when the TDS is a PDF or unreachable.
+    /// </summary>
+    Task<InventoryAiLookupResult> FetchTdsCureSpecsAsync(string tdsUrl, string? colorName);
 }

src/PowderCoating.Infrastructure/Services/InventoryAiLookupService.cs

@@ -478,6 +478,108 @@ Rules:
         }
     }
 
+    /// <summary>
+    /// Fetches a TDS URL (if it is an HTML page — PDFs are silently skipped) and asks Claude
+    /// to extract cure temperature and cure time only. Uses the same <see cref="FetchPageAsync"/>
+    /// pipeline so JSON-LD and document links are still extracted before stripping HTML.
+    /// Returns <see cref="InventoryAiLookupResult.Success"/> = <c>false</c> without an error
+    /// message when the page could not be fetched (PDF, redirect loop, etc.) so the caller
+    /// can merge results without surfacing a user-visible error.
+    /// </summary>
+    public async Task<InventoryAiLookupResult> FetchTdsCureSpecsAsync(string tdsUrl, string? colorName)
+    {
+        var apiKey = _config["AI:Anthropic:ApiKey"];
+        if (string.IsNullOrWhiteSpace(apiKey) || apiKey.StartsWith("your-"))
+            return new InventoryAiLookupResult { Success = false };
+
+        try
+        {
+            var (pageContent, _) = await FetchPageAsync(tdsUrl);
+            if (string.IsNullOrWhiteSpace(pageContent))
+            {
+                // PDF or unreachable — nothing to send to Claude
+                _logger.LogInformation("TDS cure lookup skipped (PDF or unreachable): {Url}", tdsUrl);
+                return new InventoryAiLookupResult { Success = false };
+            }
+
+            // Targeted prompt: we only need cure specs from this document
+            const string curePrompt = @"You are reading a Technical Data Sheet (TDS) for a powder coating product.
+Extract ONLY the cure schedule. Respond with a valid JSON object — no markdown, no explanation:
+
+{
+  ""cureTemperatureF"": number or null,
+  ""cureTimeMinutes"": number or null,
+  ""reasoning"": ""one sentence: what cure schedule you found""
+}
+
+Rules:
+- cureTemperatureF: the recommended cure temperature in °F. Convert from °C if needed (multiply by 1.8 + 32). If a range is given use the midpoint. Most powders cure 325–400 °F.
+- cureTimeMinutes: the hold time at cure temperature in minutes (NOT total oven time). Typically 10–20 min.
+- If neither value can be found in the document, return null for both.";
+
+            var sb = new StringBuilder();
+            sb.AppendLine("Technical Data Sheet content:");
+            if (!string.IsNullOrWhiteSpace(colorName)) sb.AppendLine($"Product: {colorName}");
+            sb.AppendLine($"Source: {tdsUrl}");
+            sb.AppendLine();
+            sb.AppendLine(pageContent);
+
+            var client = new AnthropicClient(apiKey);
+            var messageRequest = new MessageParameters
+            {
+                Model = "claude-sonnet-4-6",
+                MaxTokens = 256,
+                SystemMessage = curePrompt,
+                Messages = new List<Message>
+                {
+                    new Message
+                    {
+                        Role = RoleType.User,
+                        Content = new List<ContentBase> { new TextContent { Text = sb.ToString() } }
+                    }
+                }
+            };
+
+            var response = await client.Messages.GetClaudeMessageAsync(messageRequest);
+            var rawText = (response.FirstMessage?.Text
+                ?? response.Content.OfType<TextContent>().FirstOrDefault()?.Text
+                ?? string.Empty).Trim();
+
+            if (rawText.StartsWith("```"))
+            {
+                var start = rawText.IndexOf('\n') + 1;
+                var end   = rawText.LastIndexOf("```");
+                rawText   = rawText[start..end].Trim();
+            }
+
+            if (!rawText.StartsWith("{"))
+            {
+                var j = rawText.IndexOf('{');
+                var k = rawText.LastIndexOf('}');
+                if (j >= 0 && k > j) rawText = rawText[j..(k + 1)];
+                else return new InventoryAiLookupResult { Success = false };
+            }
+
+            var parsed = JsonSerializer.Deserialize<JsonElement>(rawText);
+            var result = new InventoryAiLookupResult
+            {
+                Success          = true,
+                CureTemperatureF = GetDecimal(parsed, "cureTemperatureF"),
+                CureTimeMinutes  = GetInt(parsed,     "cureTimeMinutes"),
+                Reasoning        = GetString(parsed,  "reasoning"),
+            };
+
+            _logger.LogInformation("TDS cure lookup for {Url}: temp={Temp}°F, time={Time}min ({Reasoning})",
+                tdsUrl, result.CureTemperatureF, result.CureTimeMinutes, result.Reasoning);
+            return result;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "TDS cure spec fetch failed for {Url}", tdsUrl);
+            return new InventoryAiLookupResult { Success = false };
+        }
+    }
+
     // ── Manufacturer URL pattern: build direct product page URL ───────────────
 
     /// <summary>

src/PowderCoating.Web/Controllers/InventoryController.cs

@@ -679,6 +679,11 @@ public class InventoryController : Controller
             return Json(new { success = false, errorMessage = "AI Inventory Assist is not enabled for your account. Contact your administrator." });
 
         var result = await _aiLookupService.LookupAsync(manufacturer, colorName, colorCode, partNumber);
+        if (result.Success)
+        {
+            await EnrichFromCatalogAsync(result, autoContribute: true);
+            await ApplyTdsCureFallbackAsync(result, colorName);
+        }
         return Json(result);
     }
 
@@ -701,9 +706,117 @@ public class InventoryController : Controller
             return Json(new { success = false, errorMessage = "No product URL provided." });
 
         var result = await _aiLookupService.LookupByUrlAsync(productUrl, colorName);
+        if (result.Success) await ApplyTdsCureFallbackAsync(result, colorName);
         return Json(result);
     }
 
+    /// <summary>
+    /// Looks up <paramref name="result"/> in the platform powder catalog by SKU + manufacturer.
+    /// If a match is found, catalog values overwrite Claude-inferred ones for spec fields
+    /// (catalog is the authoritative source) and fill gaps for URL/price fields.
+    /// If no match and <paramref name="autoContribute"/> is true, inserts a new catalog entry
+    /// so future lookups resolve instantly without an API call.
+    /// Returns (wasInCatalog, addedToCatalog) so callers can surface UI badges.
+    /// Mutates <paramref name="result"/> in place.
+    /// </summary>
+    private async Task<(bool wasInCatalog, bool addedToCatalog)> EnrichFromCatalogAsync(
+        InventoryAiLookupResult result, bool autoContribute)
+    {
+        var sku          = result.ManufacturerPartNumber?.Trim();
+        var manufacturer = (result.Manufacturer ?? result.VendorName)?.Trim();
+        var colorName    = result.ColorName?.Trim();
+
+        PowderCatalogItem? match = null;
+        if (!string.IsNullOrEmpty(sku) && !string.IsNullOrEmpty(manufacturer))
+        {
+            var skuLower = sku.ToLower();
+            var mfrLower = manufacturer.ToLower();
+            var hits = await _unitOfWork.PowderCatalog.FindAsync(p =>
+                p.Sku.ToLower() == skuLower && p.VendorName.ToLower().Contains(mfrLower));
+            match = hits.FirstOrDefault();
+        }
+
+        if (match != null)
+        {
+            // Catalog is authoritative for spec fields — overwrite AI inference
+            if (match.Finish             != null) result.Finish             = match.Finish;
+            if (match.CureTemperatureF   != null) result.CureTemperatureF   = match.CureTemperatureF;
+            if (match.CureTimeMinutes    != null) result.CureTimeMinutes    = match.CureTimeMinutes;
+            if (match.ColorFamilies      != null) result.ColorFamilies      = match.ColorFamilies;
+            if (match.RequiresClearCoat  != null) result.RequiresClearCoat  = match.RequiresClearCoat;
+            if (match.CoverageSqFtPerLb  != null) result.CoverageSqFtPerLb  = match.CoverageSqFtPerLb;
+            if (match.TransferEfficiency != null) result.TransferEfficiency = match.TransferEfficiency;
+            // URL / price fields: fill gaps only — AI may have found something better
+            result.ImageUrl    ??= match.ImageUrl;
+            result.SpecPageUrl ??= match.ProductUrl;
+            result.SdsUrl      ??= match.SdsUrl;
+            result.TdsUrl      ??= match.TdsUrl;
+            if (match.UnitPrice > 0) result.UnitCostPerLb ??= match.UnitPrice;
+            return (true, false);
+        }
+
+        if (!autoContribute
+            || string.IsNullOrEmpty(sku)
+            || string.IsNullOrEmpty(manufacturer)
+            || string.IsNullOrEmpty(colorName))
+            return (false, false);
+
+        // Auto-contribute: insert into platform catalog so future lookups/scans resolve instantly
+        try
+        {
+            var newItem = new PowderCatalogItem
+            {
+                VendorName         = manufacturer,
+                Sku                = sku,
+                ColorName          = colorName,
+                CureTemperatureF   = result.CureTemperatureF,
+                CureTimeMinutes    = result.CureTimeMinutes,
+                Finish             = result.Finish,
+                ColorFamilies      = result.ColorFamilies,
+                RequiresClearCoat  = result.RequiresClearCoat,
+                CoverageSqFtPerLb  = result.CoverageSqFtPerLb,
+                TransferEfficiency = result.TransferEfficiency,
+                ImageUrl           = result.ImageUrl,
+                ProductUrl         = result.SpecPageUrl,
+                SdsUrl             = result.SdsUrl,
+                TdsUrl             = result.TdsUrl,
+                IsUserContributed  = true,
+                CreatedAt          = DateTime.UtcNow,
+            };
+            await _unitOfWork.PowderCatalog.AddAsync(newItem);
+            await _unitOfWork.CompleteAsync();
+            _logger.LogInformation("Auto-contributed new catalog entry: {Manufacturer} {Sku}", manufacturer, sku);
+            return (false, true);
+        }
+        catch (Exception ex)
+        {
+            // Unique constraint violation means another request beat us — not an error
+            _logger.LogInformation("Catalog auto-insert skipped (likely duplicate): {Message}", ex.Message);
+            return (false, false);
+        }
+    }
+
+    /// <summary>
+    /// If cure temperature or cure time is still missing after the primary lookup but a TDS URL
+    /// was returned, fetches that page and asks Claude to extract only the cure schedule.
+    /// Mutates <paramref name="result"/> in place; silently no-ops on failure so callers
+    /// can always return the result even if the TDS fetch does not help.
+    /// </summary>
+    private async Task ApplyTdsCureFallbackAsync(InventoryAiLookupResult result, string? colorName)
+    {
+        if ((result.CureTemperatureF == null || result.CureTimeMinutes == null)
+            && !string.IsNullOrEmpty(result.TdsUrl))
+        {
+            _logger.LogInformation("Cure specs missing after lookup; trying TDS at {Url}", result.TdsUrl);
+            var tds = await _aiLookupService.FetchTdsCureSpecsAsync(result.TdsUrl, colorName);
+            if (tds.Success)
+            {
+                if (result.CureTemperatureF == null) result.CureTemperatureF = tds.CureTemperatureF;
+                if (result.CureTimeMinutes  == null) result.CureTimeMinutes  = tds.CureTimeMinutes;
+            }
+        }
+    }
+
     /// <summary>
     /// Accepts a base64 label photo or a decoded QR URL from the in-browser label scanner,
     /// runs it through Claude (vision for photos, URL-fetch for QR), searches the platform
@@ -776,63 +889,15 @@ public class InventoryController : Controller
         if (!aiResult.Success)
             return Json(new { success = false, errorMessage = aiResult.ErrorMessage });
 
-        // Search catalog by SKU first (most precise), then fall back to color name
         var sku          = aiResult.ManufacturerPartNumber?.Trim();
         var manufacturer = (aiResult.Manufacturer ?? aiResult.VendorName)?.Trim();
         var colorName    = aiResult.ColorName?.Trim();
 
-        PowderCatalogItem? catalogMatch = null;
-        if (!string.IsNullOrEmpty(sku) && !string.IsNullOrEmpty(manufacturer))
-        {
-            var skuLower = sku.ToLower();
-            var mfrLower = manufacturer.ToLower();
-            var skuMatches = await _unitOfWork.PowderCatalog.FindAsync(p =>
-                p.Sku.ToLower() == skuLower && p.VendorName.ToLower().Contains(mfrLower));
-            catalogMatch = skuMatches.FirstOrDefault();
-        }
+        // Catalog lookup, merge, and auto-contribute — same logic as AiLookup button
+        var (wasInCatalog, addedToCatalog) = await EnrichFromCatalogAsync(aiResult, autoContribute: true);
 
-        var wasInCatalog   = catalogMatch != null;
-        var addedToCatalog = false;
-
-        // Auto-contribute: insert into platform catalog if we have the minimum viable fields
-        // and this SKU isn't already there
-        if (!wasInCatalog
-            && !string.IsNullOrEmpty(sku)
-            && !string.IsNullOrEmpty(manufacturer)
-            && !string.IsNullOrEmpty(colorName))
-        {
-            try
-            {
-                var newItem = new PowderCatalogItem
-                {
-                    VendorName        = manufacturer,
-                    Sku               = sku,
-                    ColorName         = colorName,
-                    CureTemperatureF  = aiResult.CureTemperatureF,
-                    CureTimeMinutes   = aiResult.CureTimeMinutes,
-                    Finish            = aiResult.Finish,
-                    ColorFamilies     = aiResult.ColorFamilies,
-                    RequiresClearCoat = aiResult.RequiresClearCoat,
-                    CoverageSqFtPerLb = aiResult.CoverageSqFtPerLb,
-                    TransferEfficiency= aiResult.TransferEfficiency,
-                    ImageUrl          = aiResult.ImageUrl,
-                    ProductUrl        = aiResult.SpecPageUrl,
-                    SdsUrl            = aiResult.SdsUrl,
-                    TdsUrl            = aiResult.TdsUrl,
-                    IsUserContributed = true,
-                    CreatedAt         = DateTime.UtcNow,
-                };
-                await _unitOfWork.PowderCatalog.AddAsync(newItem);
-                await _unitOfWork.CompleteAsync();
-                addedToCatalog = true;
-                _logger.LogInformation("Label scan contributed new catalog entry: {Manufacturer} {Sku}", manufacturer, sku);
-            }
-            catch (Exception ex)
-            {
-                // Unique constraint violation means another request beat us — not an error
-                _logger.LogInformation("Catalog auto-insert skipped (likely duplicate): {Message}", ex.Message);
-            }
-        }
+        // TDS cure fallback — same logic as AiLookup button
+        await ApplyTdsCureFallbackAsync(aiResult, colorName);
 
         // Check if this product already exists in the tenant's inventory.
         // Match by ManufacturerPartNumber first (most precise); fall back to color name + manufacturer.
@@ -881,18 +946,18 @@ public class InventoryController : Controller
             manufacturerPartNumber = sku,
             colorName              = colorName,
             description            = aiResult.Description,
-            finish                 = catalogMatch?.Finish           ?? aiResult.Finish,
-            cureTemperatureF       = catalogMatch?.CureTemperatureF ?? aiResult.CureTemperatureF,
-            cureTimeMinutes        = catalogMatch?.CureTimeMinutes  ?? aiResult.CureTimeMinutes,
-            colorFamilies          = catalogMatch?.ColorFamilies    ?? aiResult.ColorFamilies,
-            requiresClearCoat      = catalogMatch?.RequiresClearCoat ?? aiResult.RequiresClearCoat,
-            coverageSqFtPerLb      = catalogMatch?.CoverageSqFtPerLb ?? aiResult.CoverageSqFtPerLb,
-            transferEfficiency     = catalogMatch?.TransferEfficiency ?? aiResult.TransferEfficiency,
-            unitPrice              = catalogMatch?.UnitPrice ?? aiResult.UnitCostPerLb ?? 0m,
-            imageUrl               = catalogMatch?.ImageUrl  ?? aiResult.ImageUrl,
-            productUrl             = catalogMatch?.ProductUrl ?? aiResult.SpecPageUrl,
-            sdsUrl                 = catalogMatch?.SdsUrl ?? aiResult.SdsUrl,
-            tdsUrl                 = catalogMatch?.TdsUrl ?? aiResult.TdsUrl,
+            finish                 = aiResult.Finish,
+            cureTemperatureF       = aiResult.CureTemperatureF,
+            cureTimeMinutes        = aiResult.CureTimeMinutes,
+            colorFamilies          = aiResult.ColorFamilies,
+            requiresClearCoat      = aiResult.RequiresClearCoat,
+            coverageSqFtPerLb      = aiResult.CoverageSqFtPerLb,
+            transferEfficiency     = aiResult.TransferEfficiency,
+            unitPrice              = aiResult.UnitCostPerLb ?? 0m,
+            imageUrl               = aiResult.ImageUrl,
+            productUrl             = aiResult.SpecPageUrl,
+            sdsUrl                 = aiResult.SdsUrl,
+            tdsUrl                 = aiResult.TdsUrl,
             vendorName             = manufacturer,
             wasInCatalog           = wasInCatalog,
             addedToCatalog         = addedToCatalog,

src/PowderCoating.Web/Views/Inventory/_InventoryColorFamilyScripts.cshtml

@@ -450,6 +450,21 @@
                 aiFilledImage = true;
             }
 
+            // SDS / TDS document URLs — fill inputs and show open-link buttons
+            const fillDocUrl = (fieldId, linkId, url, label) => {
+                if (!url) return;
+                const el   = document.getElementById(fieldId);
+                const link = document.getElementById(linkId);
+                if (el && (forceRefill || !el.value.trim())) {
+                    el.value = url;
+                    filled.push(label);
+                    if (!aiFilledFields.includes(fieldId)) aiFilledFields.push(fieldId);
+                }
+                if (link) { link.href = url; link.classList.remove('d-none'); }
+            };
+            fillDocUrl('field-sdsurl', 'field-sdsurl-link', data.sdsUrl, 'SDS');
+            fillDocUrl('field-tdsurl', 'field-tdsurl-link', data.tdsUrl, 'TDS');
+
             // Build a persistent "needs more info" tip if key identity fields are still unknown
             const missingHints = [];
             if (!data.manufacturer && !document.getElementById('field-manufacturer')?.value?.trim())