fix: replace mojibake pound signs with unicode escape across all price strings

EbayListingTool/Models/PhotoAnalysisResult.cs

@@ -1,4 +1,4 @@
-namespace EbayListingTool.Models;
+namespace EbayListingTool.Models;
 
 public class PhotoAnalysisResult
 {
@@ -18,6 +18,6 @@ public class PhotoAnalysisResult
 
     public string PriceRangeDisplay =>
         PriceMin > 0 && PriceMax > 0
-            ? $"£{PriceMin:F2} – £{PriceMax:F2}  (suggested £{PriceSuggested:F2})"
+            ? $"\u00A3{PriceMin:F2} – \u00A3{PriceMax:F2}  (suggested \u00A3{PriceSuggested:F2})"
-            : PriceSuggested > 0 ? $"£{PriceSuggested:F2}" : "";
+            : PriceSuggested > 0 ? $"\u00A3{PriceSuggested:F2}" : "";
 }

EbayListingTool/Models/SavedListing.cs

@@ -1,4 +1,4 @@
-namespace EbayListingTool.Models;
+namespace EbayListingTool.Models;
 
 public class SavedListing
 {
@@ -28,7 +28,7 @@ public class SavedListing
 
     public string FirstPhotoPath => PhotoPaths.Count > 0 ? PhotoPaths[0] : "";
 
-    public string PriceDisplay => Price > 0 ? $"£{Price:F2}" : "—";
+    public string PriceDisplay => Price > 0 ? $"\u00A3{Price:F2}" : "—";
 
     public string SavedAtDisplay => SavedAt.ToLocalTime().ToString("d MMM yyyy, HH:mm");
 

EbayListingTool/Services/AiAssistantService.cs

@@ -1,4 +1,4 @@
-using System.Net.Http;
+using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Text;
 using EbayListingTool.Models;
@@ -65,7 +65,7 @@ public class AiAssistantService
         string priceContext = "";
         if (soldPrices != null && soldPrices.Any())
         {
-            var prices = soldPrices.Select(p => $"£{p:F2}");
+            var prices = soldPrices.Select(p => $"\u00A3{p:F2}");
             priceContext = $"\nRecent eBay UK sold prices for similar items: {string.Join(", ", prices)}";
         }
 
@@ -143,7 +143,7 @@ public class AiAssistantService
         RefineWithCorrectionsAsync(string title, string description, decimal price, string corrections)
     {
         var priceContext = price > 0
-            ? $"Current price: £{price:F2}\n\n"
+            ? $"Current price: \u00A3{price:F2}\n\n"
             : "";
 
         var prompt =
@@ -246,7 +246,7 @@ public class AiAssistantService
             "  \"confidence_notes\": \"one sentence explaining confidence level, e.g. brand clearly visible on label\"\n" +
             "}\n\n" +
             "For prices: research realistic eBay UK sold prices in your knowledge. " +
-            "price_suggested should be a good Buy It Now price. Use GBP numbers only (no £ symbol).";
+            "price_suggested should be a good Buy It Now price. Use GBP numbers only (no \u00A3 symbol).";
 
         var json = await CallWithVisionAsync(dataUrls, prompt);
 

EbayListingTool/Services/PriceLookupService.cs

@@ -1,4 +1,4 @@
-using System.Text.RegularExpressions;
+using System.Text.RegularExpressions;
 using EbayListingTool.Models;
 
 namespace EbayListingTool.Services;
@@ -39,7 +39,7 @@ public class PriceLookupService
                 return new PriceSuggestion(
                     result.Suggested,
                     "ebay",
-                    $"eBay suggests £{result.Suggested:F2} (from {result.Count} listings)");
+                    $"eBay suggests \u00A3{result.Suggested:F2} (from {result.Count} listings)");
         }
         catch { /* eBay unavailable — fall through */ }
 
@@ -58,7 +58,7 @@ public class PriceLookupService
             return new PriceSuggestion(
                 avg,
                 "history",
-                $"Your avg for {listing.Category}: £{avg:F2} ({sameCat.Count} listings)");
+                $"Your avg for {listing.Category}: \u00A3{avg:F2} ({sameCat.Count} listings)");
         }
 
         // 3. AI estimate
@@ -73,7 +73,7 @@ public class PriceLookupService
                     out var price)
                 && price > 0)
             {
-                return new PriceSuggestion(price, "ai", $"AI estimate: £{price:F2}");
+                return new PriceSuggestion(price, "ai", $"AI estimate: \u00A3{price:F2}");
             }
         }
         catch { /* AI unavailable */ }

EbayListingTool/Services/SavedListingsService.cs

@@ -196,7 +196,7 @@ public class SavedListingsService
         var sb = new System.Text.StringBuilder();
         sb.AppendLine($"Title: {title}");
         sb.AppendLine($"Category: {category}");
-        sb.AppendLine($"Price: £{price:F2}");
+        sb.AppendLine($"Price: \u00A3{price:F2}");
         if (!string.IsNullOrWhiteSpace(conditionNotes))
             sb.AppendLine($"Condition: {conditionNotes}");
         sb.AppendLine();

EbayListingTool/Views/NewListingView.xaml.cs

@@ -230,7 +230,7 @@ public partial class NewListingView : UserControl
 
         if (result.PriceMin > 0 && result.PriceMax > 0)
         {
-            BPriceHint.Text       = $"AI estimate: £{result.PriceMin:F2} – £{result.PriceMax:F2}";
+            BPriceHint.Text       = $"AI estimate: \u00A3{result.PriceMin:F2} – \u00A3{result.PriceMax:F2}";
             BPriceHint.Visibility = Visibility.Visible;
         }
     }