Add BethINI Pie tool plugin

Native IPluginTool that integrates BethINI Pie (performance INI editor)
into the Tools menu. Auto-downloads the latest Linux build from GitHub
releases, checks for updates via commit SHA, and pre-configures it for
the current game and profile INI directory.

Supports: Skyrim SE, Fallout 4, Fallout New Vegas, Starfield.

Includes post-extraction fixes for PyInstaller bundle quirks:
- Patches tm.tcl hardcoded Tcl module path
- Symlinks apps/icons/fonts from _internal/ to executable directory
- Sets TCL_LIBRARY/TK_LIBRARY env vars on launch

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/libs/tool_bethinipie/src/bethinipie.h b/libs/tool_bethinipie/src/bethinipie.h
new file mode 100644
index 0000000..b52d5a9
--- /dev/null
+++ b/libs/tool_bethinipie/src/bethinipie.h
@@ -0,0 +1,64 @@
+#ifndef BETHINIPIE_H
+#define BETHINIPIE_H
+
+#include <uibase/iplugintool.h>
+
+class QNetworkAccessManager;
+
+class BethiniPie : public MOBase::IPluginTool
+{
+  Q_OBJECT
+  Q_INTERFACES(MOBase::IPlugin MOBase::IPluginTool)
+  Q_PLUGIN_METADATA(IID "com.fluorine.BethiniPie")
+
+public:
+  BethiniPie();
+
+  bool init(MOBase::IOrganizer* moInfo) 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;
+
+  QString displayName() const override;
+  QString tooltip() const override;
+  QIcon icon() const override;
+
+public slots:
+  void display() const override;
+
+private:
+  /// Returns ~/.local/share/fluorine/tools/bethini-pie/
+  QString toolDir() const;
+
+  /// Returns the path to the BethiniPie executable inside toolDir()
+  QString executablePath() const;
+
+  /// Returns the stored SHA from .sha file, or empty string
+  QString localSha() const;
+
+  /// Writes the SHA to .sha file
+  void saveLocalSha(const QString& sha) const;
+
+  /// Maps Fluorine game name to BethIni Pie app name (they match, but provides
+  /// a validation point)
+  QString bethiniGameName() const;
+
+  /// Returns the BethIni.ini directory key for the current game
+  /// e.g. "sSkyrim Special EditionINIPath"
+  QString iniDirectoryKey() const;
+
+  /// Writes/updates the Bethini.ini config pointing at the profile's INI directory
+  void writeBethiniConfig(const QString& bethiniDir,
+                          const QString& iniPath) const;
+
+  /// Checks for update and downloads if needed. Returns true if ready to launch.
+  bool ensureUpToDate() const;
+
+  const MOBase::IOrganizer* m_MOInfo;
+  mutable QNetworkAccessManager* m_Network;
+};
+
+#endif  // BETHINIPIE_H