minor: yugioh support added

core/include/ccm/games/magic/MagicCardPreviewSource.hpp

@@ -19,9 +19,10 @@ class MagicCardPreviewSource final : public ICardPreviewSource {
 public:
     explicit MagicCardPreviewSource(IHttpClient& http);
 
-    Result<std::string> fetchImageUrl(std::string_view name,
-                                      std::string_view setId,
-                                      std::string_view setNo) override;
+    Result<std::string, PreviewLookupError>
+        fetchImageUrl(std::string_view name,
+                      std::string_view setId,
+                      std::string_view setNo) override;
 
     // Build the fully URL-encoded Scryfall search URL for the given card.
     // Exposed for unit testing and to keep encoding rules in one place.
@@ -29,11 +30,13 @@ public:
                                       std::string_view setId);
 
     // Parse a Scryfall /cards/search response body and pull out the
-    // `data[0].image_uris.normal` URL. Returns an error result when no
-    // matching printing is found, when the JSON is malformed, or when the
-    // entry has no top-level `image_uris` (double-faced cards expose them
-    // on a face object - no fallback in this compatibility behavior either).
-    static Result<std::string> parseResponse(const std::string& body);
+    // `data[0].image_uris.normal` URL. Errors are classified:
+    //   - JSON parse failure or missing/non-array `data` => Transient.
+    //   - Empty `data` array, missing top-level `image_uris`, or missing
+    //     `image_uris.normal` => NotFound (the upstream answered, but the
+    //     printing simply has no preview we can use).
+    static Result<std::string, PreviewLookupError>
+        parseResponse(const std::string& body);
 
 private:
     IHttpClient& http_;