Add native Root Builder and OMOD Installer plugins

- libs/rootbuilder_native/: Native C++ port of rootbuilder.py (IPluginTool)
  - Root/ dir scanning, copy (reflink/CoW) and symlink modes
  - JSON manifest tracking, backup/restore, auto-deploy hooks
  - Legacy migration and third-party conflict detection
- libs/installer_omod_native/: Native C++ port of installer_omod.py
  - Handles .omod archives (Oblivion Mod Manager format)
  - Binary config parsing, .NET string format, CRC file parsing
  - zlib raw deflate and LZMA decompression
  - Repackages to zip for MO2's installation manager
- Added both to build-inner.sh plugin packaging

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

1 files changed, 79 insertions, 0 deletions

diff --git a/libs/rootbuilder_native/src/rootbuilder.h b/libs/rootbuilder_native/src/rootbuilder.h
new file mode 100644
index 0000000..121bcc1
--- /dev/null
+++ b/libs/rootbuilder_native/src/rootbuilder.h
@@ -0,0 +1,79 @@
+#ifndef ROOTBUILDER_NATIVE_H
+#define ROOTBUILDER_NATIVE_H
+
+#include <uibase/iplugintool.h>
+
+#include <QJsonObject>
+#include <QString>
+
+class RootBuilderNative : public MOBase::IPluginTool
+{
+    Q_OBJECT
+    Q_INTERFACES(MOBase::IPlugin MOBase::IPluginTool)
+    Q_PLUGIN_METADATA(IID "com.tannin.ModOrganizer.PluginTool/1.0")
+
+public:
+    RootBuilderNative();
+
+    // IPlugin
+    bool init(MOBase::IOrganizer* organizer) override;
+    QString name() const override;
+    QString localizedName() const override;
+    QString author() const override;
+    QString description() const override;
+    MOBase::VersionInfo version() const override;
+    QList<MOBase::PluginSetting> settings() const override;
+    bool enabledByDefault() const override;
+
+    // IPluginTool
+    QString displayName() const override;
+    QString tooltip() const override;
+    QIcon icon() const override;
+
+public slots:
+    void display() const override;
+
+private:
+    // Storage paths
+    QString storageDir() const;
+    QString backupDir() const;
+    QString manifestPath() const;
+    QString settingsPath() const;
+
+    // Settings (own JSON, not pluginSetting)
+    QJsonObject loadSettings() const;
+    void saveSettings(const QJsonObject& settings) const;
+    bool isAutoEnabled() const;
+
+    // Manifest
+    QJsonObject loadManifest() const;
+    void saveManifest(const QJsonObject& manifest) const;
+    void removeManifest() const;
+
+    // Legacy migration
+    void migrateLegacy() const;
+
+    // Third-party conflict detection
+    void checkThirdPartyRootBuilder() const;
+
+    // Build / Clear
+    int build() const;
+    int clear() const;
+
+    // File operations
+    static QString findRootDir(const QString& modPath);
+    static void reflinkCopy(const QString& src, const QString& dst);
+    static void ensureReadable(const QString& path);
+    static void ensureWritable(const QString& path);
+    static bool forceRemove(const QString& path);
+    static void cleanupEmptyDirs(const QString& baseDir,
+                                 const QStringList& paths);
+
+    // Hooks
+    bool onAboutToRun(const QString& executable);
+    void onFinishedRun(const QString& executable, unsigned int exitCode);
+
+    MOBase::IOrganizer* m_organizer = nullptr;
+};
+
+#endif // ROOTBUILDER_NATIVE_H