minor: New Game Digimon Digi-Battle (#17)

* digimon digi battle added to supported games

* sonarqube update

* readme update

---------

Co-authored-by: sdine <sdine@sdine.com>

core/include/ccm/games/digibattle99/DigiBattle99CardPreviewSource.hpp

@@ -0,0 +1,67 @@
+#pragma once
+
+// DigiBattle99CardPreviewSource: digimoncard.io search + CDN card images for
+// Digimon Digi-Battle (1999 English).
+//
+// Preview key middle slot is Set.name (pack display name) so search.php?pack=
+// works without a reverse slug map. When setNo is present, the CDN URL is
+// built directly — no search round-trip.
+
+#include "ccm/ports/ICardPreviewSource.hpp"
+#include "ccm/ports/IHttpClient.hpp"
+
+#include <string>
+#include <string_view>
+#include <vector>
+
+namespace ccm {
+
+class DigiBattle99CardPreviewSource final : public ICardPreviewSource {
+public:
+    static constexpr const char* kSeries = "Digimon Digi-Battle Card Game";
+    static constexpr const char* kImageBase =
+        "https://images.digimoncard.io/images/cards/";
+
+    explicit DigiBattle99CardPreviewSource(IHttpClient& http);
+
+    [[nodiscard]] bool supportsAutoDetectPrint() const noexcept override { return true; }
+
+    Result<std::string, PreviewLookupError>
+        fetchImageUrl(std::string_view name,
+                      std::string_view setName,
+                      std::string_view setNo) override;
+    Result<AutoDetectedPrint> detectFirstPrint(std::string_view name,
+                                               std::string_view setName) override;
+    Result<std::vector<AutoDetectedPrint>> detectPrintVariants(std::string_view name,
+                                                               std::string_view setName) override;
+
+    // Uppercase the alphabetic prefix of a Digi-Battle card number (bo-88 -> BO-88).
+    // Does not invent zero-padding — CDN keys match API ids literally.
+    static std::string normalizeCardNumber(std::string_view setNo);
+
+    // CDN preview URL for a normalized card id (.jpg — wxImage registers
+    // JPEG/PNG only; digimoncard.io also serves .webp but we cannot decode it).
+    static std::string buildImageUrl(std::string_view setNo);
+
+    // digimoncard.io search URL: n= / pack= / series= / optional card=.
+    // setName is the pack display name (Set.name), not the slug id.
+    static std::string buildSearchUrl(std::string_view name,
+                                      std::string_view setName,
+                                      std::string_view setNo);
+
+    // Parse a digimoncard.io search.php body into a CDN image URL for the
+    // first exact name match (optional pack filter applied by the request).
+    static Result<std::string, PreviewLookupError>
+        parseImageUrlFromSearch(const std::string& body,
+                                std::string_view wantedCardName);
+
+    static Result<std::vector<AutoDetectedPrint>>
+        parsePrintVariants(const std::string& body,
+                           std::string_view setName,
+                           std::string_view wantedCardName);
+
+private:
+    IHttpClient& http_;
+};
+
+}  // namespace ccm

core/include/ccm/games/digibattle99/DigiBattle99GameModule.hpp

@@ -0,0 +1,27 @@
+#pragma once
+
+// DigiBattle99GameModule: Digimon Digi-Battle (1999 English) via digimoncard.io.
+
+#include "ccm/games/IGameModule.hpp"
+#include "ccm/games/digibattle99/DigiBattle99CardPreviewSource.hpp"
+#include "ccm/games/digibattle99/DigiBattle99SetSource.hpp"
+
+namespace ccm {
+
+class DigiBattle99GameModule final : public IGameModule {
+public:
+    explicit DigiBattle99GameModule(IHttpClient& http);
+
+    [[nodiscard]] Game        id() const noexcept override { return Game::DigiBattle99; }
+    [[nodiscard]] std::string dirName()     const override { return "digibattle99"; }
+    [[nodiscard]] std::string displayName() const override { return "Digimon (Digi-Battle)"; }
+
+    ISetSource&         setSource()          override { return setSource_; }
+    ICardPreviewSource* cardPreviewSource() noexcept override { return &previewSource_; }
+
+private:
+    DigiBattle99SetSource         setSource_;
+    DigiBattle99CardPreviewSource previewSource_;
+};
+
+}  // namespace ccm

core/include/ccm/games/digibattle99/DigiBattle99SetSource.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+// DigiBattle99SetSource: ISetSource for Digimon Digi-Battle (1999 English).
+// digimoncard.io has no dedicated sets endpoint; we derive unique pack names
+// from a bulk search.php call scoped to series=Digimon Digi-Battle Card Game.
+
+#include "ccm/games/IGameModule.hpp"
+#include "ccm/ports/IHttpClient.hpp"
+
+#include <string>
+#include <string_view>
+
+namespace ccm {
+
+class DigiBattle99SetSource final : public ISetSource {
+public:
+    static constexpr const char* kEndpoint =
+        "https://digimoncard.io/api-public/search.php?"
+        "series=Digimon%20Digi-Battle%20Card%20Game&limit=1000&sort=name&sortdirection=asc";
+
+    static constexpr const char* kSeries = "Digimon Digi-Battle Card Game";
+
+    explicit DigiBattle99SetSource(IHttpClient& http);
+
+    Result<std::vector<Set>> fetchAll() override;
+
+    // Pure parser exposed for unit testing without a network round-trip.
+    static Result<std::vector<Set>> parseResponse(const std::string& body);
+
+    // Stable Set.id from a pack display name (ASCII lower, non-alnum -> '-').
+    static std::string slugifyPackName(std::string_view packName);
+
+private:
+    IHttpClient& http_;
+};
+
+}  // namespace ccm