Replace Python plugins with native C++ .so, remove bundled Python (~95MB)

- Add native plugins: form43_checker, script_extender_checker, preview_dds,
  basic_games (75 game defs via IPluginProxy pattern with Steam/GOG detection)
- Remove portable Python from Dockerfile and build-inner.sh
- Add Python settings tab with venv support (system python3 + PyQt6)
- Skip loading plugin_python.so when Python disabled (default: off)
- Update pythonrunner.cpp to use venv at ~/.local/share/fluorine/python-venv/
- Preserve real file permissions in FUSE VFS (fixes native executable +x bits)
- Add FUSE_SET_ATTR_MODE handler so chmod works through VFS
- Fix desktop shortcut Exec= to use fluorine-manager launcher, not bare binary

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

3 files changed, 446 insertions, 0 deletions

diff --git a/libs/script_extender_checker_native/src/CMakeLists.txt b/libs/script_extender_checker_native/src/CMakeLists.txt
new file mode 100644
index 0000000..7d63643
--- /dev/null
+++ b/libs/script_extender_checker_native/src/CMakeLists.txt
@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.16)
+
+file(GLOB script_extender_checker_native_SOURCES CONFIGURE_DEPENDS
+  ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp
+  ${CMAKE_CURRENT_SOURCE_DIR}/*.h
+)
+
+add_library(script_extender_checker_native SHARED ${script_extender_checker_native_SOURCES})
+mo2_configure_plugin(script_extender_checker_native NO_SOURCES WARNINGS OFF)
+target_link_libraries(script_extender_checker_native PRIVATE mo2::uibase)
+mo2_install_plugin(script_extender_checker_native)
diff --git a/libs/script_extender_checker_native/src/scriptextenderchecker.cpp b/libs/script_extender_checker_native/src/scriptextenderchecker.cpp
new file mode 100644
index 0000000..65276ad
--- /dev/null
+++ b/libs/script_extender_checker_native/src/scriptextenderchecker.cpp
@@ -0,0 +1,363 @@
+#include "scriptextenderchecker.h"
+
+#include <uibase/iplugingame.h>
+#include <uibase/pluginrequirements.h>
+
+#include <QCoreApplication>
+#include <QDir>
+#include <QFile>
+#include <QFileInfo>
+#include <QMap>
+#include <QRegularExpression>
+#include <QStringConverter>
+#include <QTextStream>
+
+using namespace MOBase;
+
+// Regex patterns matching SKSE/F4SE/etc log formats
+static const QRegularExpression RE_NORMAL(
+    R"(plugin (?P<pluginPath>.+) \((?P<infoVersion>[\dA-Fa-f]{8}) (?P<name>.*) (?P<version>[\dA-Fa-f]{8})\) (?P<loadStatus>.+?)(?P<errorCode> \d+)?( \(handle \d+\))?\s*$)");
+
+static const QRegularExpression RE_COULDNT_LOAD(
+    R"(couldn't load plugin (?P<pluginPath>.+) \(Error (?:code )?(?P<lastError>[-+]?\d+)(?::\s*(?P<seDetails>.*))?\)\s*)");
+
+static const QRegularExpression RE_NOT_PLUGIN(
+    R"(plugin (?P<pluginPath>.+) does not appear to be an (?:SK|F4|NV|FO|OB)SE plugin\s*)");
+
+ScriptExtenderChecker::ScriptExtenderChecker() : m_organizer(nullptr) {}
+
+const QMap<QString, ScriptExtenderChecker::GameType>&
+ScriptExtenderChecker::supportedGames()
+{
+  static const QMap<QString, GameType> games = {
+      {"Skyrim",
+       {LogLocation::Docs, "SKSE/skse.log", "SKSE/skse_editor.log"}},
+      {"Skyrim Special Edition",
+       {LogLocation::Docs, "SKSE/skse64.log", ""}},
+      {"Skyrim VR",
+       {LogLocation::Docs, "SKSE/sksevr.log", ""}},
+      {"Fallout 4",
+       {LogLocation::Docs, "F4SE/f4se.log", ""}},
+      {"Oblivion",
+       {LogLocation::Install, "obse.log", "obse_editor.log"}},
+      {"New Vegas",
+       {LogLocation::Install, "nvse.log", "nvse_editor.log"}},
+      {"TTW",
+       {LogLocation::Install, "nvse.log", "nvse_editor.log"}},
+      {"Fallout 3",
+       {LogLocation::Install, "fose.log", "fose_editor.log"}},
+  };
+  return games;
+}
+
+bool ScriptExtenderChecker::init(IOrganizer* moInfo)
+{
+  m_organizer = moInfo;
+  m_organizer->onFinishedRun(
+      [this](const QString&, unsigned int) { invalidate(); });
+  return true;
+}
+
+QString ScriptExtenderChecker::name() const
+{
+  return "Script Extender Plugin Load Checker (Native)";
+}
+
+QString ScriptExtenderChecker::localizedName() const
+{
+  return tr("Script Extender Plugin Load Checker (Native)");
+}
+
+QString ScriptExtenderChecker::author() const
+{
+  return "AnyOldName3";
+}
+
+QString ScriptExtenderChecker::description() const
+{
+  return tr("Checks script extender log to see if any plugins failed to load.");
+}
+
+VersionInfo ScriptExtenderChecker::version() const
+{
+  return VersionInfo(1, 2, 0, VersionInfo::RELEASE_FINAL);
+}
+
+std::vector<std::shared_ptr<const IPluginRequirement>>
+ScriptExtenderChecker::requirements() const
+{
+  const auto& games = supportedGames();
+  return {PluginRequirementFactory::gameDependency(QStringList(games.keys()))};
+}
+
+QList<PluginSetting> ScriptExtenderChecker::settings() const
+{
+  return {};
+}
+
+std::vector<unsigned int> ScriptExtenderChecker::activeProblems() const
+{
+  if (!listBadPluginMessages().isEmpty()) {
+    return {PROBLEM_PLUGIN_LOAD};
+  }
+  return {};
+}
+
+QString ScriptExtenderChecker::shortDescription(unsigned int key) const
+{
+  return tr("Script extender log reports incompatible plugins.");
+}
+
+QString ScriptExtenderChecker::fullDescription(unsigned int key) const
+{
+  QStringList plugins     = listBadPluginMessages();
+  QString pluginListString = "\n  \u2022 " + plugins.join("\n  \u2022 ");
+  return tr("You have one or more script extender plugins which failed to "
+            "load!\n\n"
+            "If you want this notification to go away, here are some steps you "
+            "can take:\n"
+            "  \u2022 Look for updates to the mod or the specific plugin "
+            "included in the mod.\n"
+            "  \u2022 Disable the mod containing the plugin.\n"
+            "  \u2022 Hide or delete the plugin from the mod.\n\n"
+            "To refresh the script extender logs, you will need to run the game "
+            "and/or editor again!\n\n"
+            "The failed plugins are:%1")
+      .arg(pluginListString);
+}
+
+bool ScriptExtenderChecker::hasGuidedFix(unsigned int key) const
+{
+  return false;
+}
+
+void ScriptExtenderChecker::startGuidedFix(unsigned int key) const {}
+
+QString ScriptExtenderChecker::resolveOrigin(const QString& pluginPath) const
+{
+  try {
+    QString dataDir =
+        m_organizer->managedGame()->dataDirectory().absolutePath();
+    QString relativePath = QDir(dataDir).relativeFilePath(pluginPath);
+    QStringList origins  = m_organizer->getFileOrigins(relativePath);
+    if (!origins.isEmpty()) {
+      return origins.first();
+    }
+  } catch (...) {
+  }
+  return QString();
+}
+
+ScriptExtenderChecker::PluginMessage
+ScriptExtenderChecker::parseNormalLine(
+    const QRegularExpressionMatch& match) const
+{
+  PluginMessage msg;
+  msg.pluginPath    = match.captured("pluginPath");
+  QString name      = match.captured("name");
+  QString version   = match.captured("version");
+  QString status    = match.captured("loadStatus");
+  msg.origin        = resolveOrigin(msg.pluginPath);
+  msg.success =
+      msg.origin.isEmpty() || status == "loaded correctly" || status == "no version data";
+
+  if (!msg.success) {
+    QString trStatus = status;
+    // Translate known statuses
+    if (status == "disabled, address library needs to be updated")
+      trStatus = tr("disabled, address library needs to be updated");
+    else if (status == "disabled, fatal error occurred while loading plugin")
+      trStatus = tr("disabled, fatal error occurred while loading plugin");
+    else if (status == "disabled, bad version data")
+      trStatus = tr("disabled, bad version data");
+    else if (status == "disabled, no name specified")
+      trStatus = tr("disabled, no name specified");
+    else if (status == "disabled, unsupported version independence method")
+      trStatus = tr("disabled, unsupported version independence method");
+    else if (status == "disabled, incompatible with current runtime version")
+      trStatus = tr("disabled, incompatible with current runtime version");
+    else if (status == "disabled, requires newer script extender")
+      trStatus = tr("disabled, requires newer script extender");
+    else if (status == "reported as incompatible during query")
+      trStatus = tr("reported as incompatible during query");
+    else if (status == "reported as incompatible during load")
+      trStatus = tr("reported as incompatible during load");
+    else if (status ==
+             "disabled, fatal error occurred while checking plugin compatibility")
+      trStatus = tr("disabled, fatal error occurred while checking plugin "
+                     "compatibility");
+    else if (status == "disabled, fatal error occurred while querying plugin")
+      trStatus = tr("disabled, fatal error occurred while querying plugin");
+
+    msg.message = tr("%1 version %2 (%3, %4) %5.")
+                      .arg(name)
+                      .arg(version)
+                      .arg(QFileInfo(msg.pluginPath).fileName())
+                      .arg(msg.origin)
+                      .arg(trStatus);
+  }
+  return msg;
+}
+
+ScriptExtenderChecker::PluginMessage
+ScriptExtenderChecker::parseCouldntLoadLine(
+    const QRegularExpressionMatch& match) const
+{
+  PluginMessage msg;
+  msg.pluginPath = match.captured("pluginPath");
+  int lastError  = match.captured("lastError").toInt();
+  QString details = match.captured("seDetails").trimmed();
+  msg.origin      = resolveOrigin(msg.pluginPath);
+  msg.success     = msg.origin.isEmpty();
+
+  if (!msg.success) {
+    QString fileName = QFileInfo(msg.pluginPath).fileName();
+    if (lastError == 126) {
+      msg.message =
+          tr("Couldn't load %1 (%2). A dependency DLL could not be found "
+             "(code %3). %4")
+              .arg(fileName)
+              .arg(msg.origin)
+              .arg(lastError)
+              .arg(details);
+    } else if (lastError == 193) {
+      msg.message = tr("Couldn't load %1 (%2). A DLL is invalid (code %3).")
+                        .arg(fileName)
+                        .arg(msg.origin)
+                        .arg(lastError);
+    } else {
+      msg.message =
+          tr("Couldn't load %1 (%2). The last error code was %3.")
+              .arg(fileName)
+              .arg(msg.origin)
+              .arg(lastError);
+    }
+  }
+  return msg;
+}
+
+ScriptExtenderChecker::PluginMessage
+ScriptExtenderChecker::parseNotAPluginLine(
+    const QRegularExpressionMatch& match) const
+{
+  PluginMessage msg;
+  msg.pluginPath = match.captured("pluginPath");
+  msg.origin     = resolveOrigin(msg.pluginPath);
+  msg.success    = msg.origin.isEmpty();
+
+  if (!msg.success) {
+    msg.message =
+        tr("%1 (%2) does not appear to be a script extender plugin.")
+            .arg(QFileInfo(msg.pluginPath).fileName())
+            .arg(msg.origin);
+  }
+  return msg;
+}
+
+QList<ScriptExtenderChecker::PluginMessage>
+ScriptExtenderChecker::parseLog(const QString& logPath) const
+{
+  QList<PluginMessage> messages;
+
+  QFile file(logPath);
+  if (!file.exists() || !file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+    return messages;
+  }
+
+  // Script extender logs use cp1252 encoding
+  QTextStream stream(&file);
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+  stream.setCodec("Windows-1252");
+#else
+  stream.setEncoding(QStringConverter::Latin1);
+#endif
+
+  while (!stream.atEnd()) {
+    QString line = stream.readLine() + "\n";
+
+    QRegularExpressionMatch match = RE_NORMAL.match(line);
+    if (match.hasMatch()) {
+      messages.append(parseNormalLine(match));
+      continue;
+    }
+
+    match = RE_COULDNT_LOAD.match(line);
+    if (match.hasMatch()) {
+      messages.append(parseCouldntLoadLine(match));
+      continue;
+    }
+
+    match = RE_NOT_PLUGIN.match(line);
+    if (match.hasMatch()) {
+      messages.append(parseNotAPluginLine(match));
+      continue;
+    }
+  }
+
+  return messages;
+}
+
+QStringList ScriptExtenderChecker::listBadPluginMessages() const
+{
+  const auto& games = supportedGames();
+  QString gameName  = m_organizer->managedGame()->gameName();
+
+  if (!games.contains(gameName)) {
+    return {};
+  }
+
+  const GameType& gameType = games[gameName];
+
+  QString baseDir;
+  if (gameType.base == LogLocation::Docs) {
+    baseDir = m_organizer->managedGame()->documentsDirectory().absolutePath();
+  } else {
+    baseDir = m_organizer->managedGame()->gameDirectory().absolutePath();
+  }
+
+  QList<PluginMessage> gameMessages;
+  QList<PluginMessage> editorMessages;
+
+  if (!gameType.gameSuffix.isEmpty()) {
+    gameMessages = parseLog(QDir(baseDir).filePath(gameType.gameSuffix));
+  }
+  if (!gameType.editorSuffix.isEmpty()) {
+    editorMessages = parseLog(QDir(baseDir).filePath(gameType.editorSuffix));
+  }
+
+  QStringList result;
+
+  // Report game log failures that aren't successful in editor log
+  for (const auto& gameMsg : gameMessages) {
+    if (!gameMsg.success) {
+      bool editorOk = false;
+      for (const auto& editorMsg : editorMessages) {
+        if (gameMsg.pluginPath == editorMsg.pluginPath && editorMsg.success) {
+          editorOk = true;
+          break;
+        }
+      }
+      if (!editorOk && !result.contains(gameMsg.message)) {
+        result.append(gameMsg.message);
+      }
+    }
+  }
+
+  // Report editor log failures that aren't successful in game log
+  for (const auto& editorMsg : editorMessages) {
+    if (!editorMsg.success) {
+      bool gameOk = false;
+      for (const auto& gameMsg : gameMessages) {
+        if (editorMsg.pluginPath == gameMsg.pluginPath && gameMsg.success) {
+          gameOk = true;
+          break;
+        }
+      }
+      if (!gameOk && !result.contains(editorMsg.message)) {
+        result.append(editorMsg.message);
+      }
+    }
+  }
+
+  return result;
+}
diff --git a/libs/script_extender_checker_native/src/scriptextenderchecker.h b/libs/script_extender_checker_native/src/scriptextenderchecker.h
new file mode 100644
index 0000000..8dbadcb
--- /dev/null
+++ b/libs/script_extender_checker_native/src/scriptextenderchecker.h
@@ -0,0 +1,72 @@
+#ifndef SCRIPTEXTENDERCHECKER_H
+#define SCRIPTEXTENDERCHECKER_H
+
+#include <memory>
+
+#include <QString>
+#include <QStringList>
+
+#include <uibase/iplugin.h>
+#include <uibase/iplugindiagnose.h>
+#include <uibase/pluginrequirements.h>
+
+class ScriptExtenderChecker : public QObject,
+                              public MOBase::IPlugin,
+                              public MOBase::IPluginDiagnose
+{
+  Q_OBJECT
+  Q_INTERFACES(MOBase::IPlugin MOBase::IPluginDiagnose)
+  Q_PLUGIN_METADATA(IID "org.tannin.ScriptExtenderCheckerNative")
+
+public:
+  ScriptExtenderChecker();
+
+public:  // IPlugin
+  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;
+  std::vector<std::shared_ptr<const MOBase::IPluginRequirement>>
+  requirements() const override;
+  QList<MOBase::PluginSetting> settings() const override;
+
+public:  // IPluginDiagnose
+  std::vector<unsigned int> activeProblems() const override;
+  QString shortDescription(unsigned int key) const override;
+  QString fullDescription(unsigned int key) const override;
+  bool hasGuidedFix(unsigned int key) const override;
+  void startGuidedFix(unsigned int key) const override;
+
+private:
+  static const unsigned int PROBLEM_PLUGIN_LOAD = 0;
+
+  enum class LogLocation { Docs, Install };
+
+  struct GameType {
+    LogLocation base;
+    QString gameSuffix;
+    QString editorSuffix;  // empty if no editor log
+  };
+
+  struct PluginMessage {
+    QString pluginPath;
+    QString origin;
+    QString message;
+    bool success;
+  };
+
+  QStringList listBadPluginMessages() const;
+  QList<PluginMessage> parseLog(const QString& logPath) const;
+  PluginMessage parseNormalLine(const QRegularExpressionMatch& match) const;
+  PluginMessage parseCouldntLoadLine(const QRegularExpressionMatch& match) const;
+  PluginMessage parseNotAPluginLine(const QRegularExpressionMatch& match) const;
+  QString resolveOrigin(const QString& pluginPath) const;
+
+  static const QMap<QString, GameType>& supportedGames();
+
+  MOBase::IOrganizer* m_organizer;
+};
+
+#endif  // SCRIPTEXTENDERCHECKER_H