Fix VFS rmdir, prefix/launch issues, add version + beta channel

- VFS: add mo2_rmdir + OverwriteManager::removeDirectory so Wrye Bash
  shutil.rmtree stops failing with WinError 267 (issue #47).
- FileRenamer: case-insensitive fallback via new resolvePathCaseInsensitive
  walks each path component; bulk hide in Conflict tab no longer dies with
  a misleading "Input/output error" when DirectoryEntry normalised parent
  dir case (issue #54). formatSystemMessage stops aliasing Windows error
  code 5 to errno 5 (EIO).
- Versioning: FLUORINE_VERSION_* + fluorine_build_info.h generated from
  CMake; Linux createVersionInfo returns Fluorine's version. About dialog
  shows Fluorine version + MO2 engine + commit. Beta builds stamp
  "<semver>B<yyyymmddhhmm>" (issue #51).
- CI: ci.yml determines channel from ref (v* tags = stable, main = beta),
  publishes a rolling `beta` GitHub release whose body carries a
  machine-parseable fluorine-meta block (timestamp, commit) for the
  in-app updater.
- Updater: new FluorineUpdater polls GitHub API on startup, compares
  against embedded metadata, notifies on new release without auto-install.
  Channel toggle piggybacks on the existing "beta versions" checkbox.
- Bethesda plugins: determineMyGamesPath no longer creates
  Documents/My Games/<GameName> for every possible title at plugin load;
  only games with a detected install path get their dirs created
  (issue #55).
- Starfield: dataDirectory() on Linux now points at <game>/Data instead
  of My Games/Starfield/Data so the single FUSE mount lands where SFSE
  loads plugins; My Games Data becomes a secondary symlinked mapping
  (issue #56).
- Prefix resolution: prefer Fluorine config, then explicit
  fluorine/prefix_path, then legacy Settings/* keys (with a warning) so
  auto-detected Heroic/Bottles prefixes can't silently override a user-
  configured Fluorine prefix (issue #52). compatDataPathFromPrefix no
  longer hands Proton the wrong parent dir for plain wine prefixes.
- xrandr: ensureXrandrInstalled back-fills the helper for existing SLR
  installs, prefix init runs it before wineboot, SLR wrap exposes
  xrandr-bin via --filesystem= and prepends PATH inside the container
  (issue #49).
- Process tracking: drop the wineserver-as-last-resort fallback that made
  MO2 hang on Proton's session manager after game exit. Rescan the prefix
  for matching game executables instead (covers reparented launcher
  children like f4se_loader → Fallout4.exe). Unlock button now kills
  wineserver for the prefix (SIGTERM then SIGKILL on timeout).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

12 files changed, 66 insertions, 24 deletions

diff --git a/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp b/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp
index 9d29dcf..fc3ba8a 100644
--- a/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp
+++ b/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp
@@ -56,7 +56,7 @@ GameGamebryo::GameGamebryo() {}
 void GameGamebryo::detectGame()
 {
   m_GamePath    = identifyGamePath();
-  m_MyGamesPath = determineMyGamesPath(gameName());
+  m_MyGamesPath = determineMyGamesPath(gameName(), !m_GamePath.isEmpty());
 }
 
 bool GameGamebryo::init(MOBase::IOrganizer* moInfo)
@@ -714,7 +714,8 @@ QString GameGamebryo::getSpecialPath(const QString& name)
 }
 #endif  // _WIN32
 
-QString GameGamebryo::determineMyGamesPath(const QString& gameName)
+QString GameGamebryo::determineMyGamesPath(const QString& gameName,
+                                           bool createIfMissing)
 {
   const QString pattern = "%1/My Games/" + gameName;
 
@@ -781,21 +782,36 @@ QString GameGamebryo::determineMyGamesPath(const QString& gameName)
     }
   }
 
-  // If no existing directory was found, try to create it in the configured prefix
-  // so that the game launcher can populate it on first run.
+  // No existing directory found. By default we return the expected path
+  // (under the configured prefix) WITHOUT creating it — every Bethesda
+  // plugin constructs itself at startup, and pre-creating `My Games/<Game>`
+  // for every possible title (Fallout4, Oblivion, Morrowind, …) clutters
+  // the user's prefix with empty folders for games they don't have.
+  // See issue #55.
+  //
+  // Callers that actually need the directory (profile initialization,
+  // save writes, ini deployment) should mkpath on demand or pass
+  // createIfMissing=true explicitly.
   if (!configuredPrefix.isEmpty()) {
     const QString configuredDocs =
         QDir(configuredPrefix).filePath("drive_c/users/steamuser/Documents");
     const QString newPath = pattern.arg(configuredDocs);
-    if (QDir().mkpath(newPath)) {
-      MOBase::log::info("determineMyGamesPath: created '{}' for game '{}'", newPath,
-                        gameName);
+    if (createIfMissing) {
+      if (QDir().mkpath(newPath)) {
+        MOBase::log::info("determineMyGamesPath: created '{}' for game '{}'",
+                          newPath, gameName);
+        return newPath;
+      }
+    } else {
+      // Return the expected path for reference; callers may check for
+      // existence before writing.
       return newPath;
     }
   }
 
-  MOBase::log::warn("determineMyGamesPath: could not find My Games path for '{}'",
-                    gameName);
+  MOBase::log::debug(
+      "determineMyGamesPath: no existing My Games path for '{}' (create=false)",
+      gameName);
 #endif
 
   return {};
diff --git a/libs/game_bethesda/src/gamebryo/gamegamebryo.h b/libs/game_bethesda/src/gamebryo/gamegamebryo.h
index 78ac1d4..c926c4e 100644
--- a/libs/game_bethesda/src/gamebryo/gamegamebryo.h
+++ b/libs/game_bethesda/src/gamebryo/gamegamebryo.h
@@ -148,7 +148,13 @@ protected:
 
   WORD getArch(QString const& program) const;
 
-  static QString determineMyGamesPath(const QString& gameName);
+  // createIfMissing=false is the safe default: the per-game plugin ctor
+  // calls this for every installed Bethesda game and we don't want to
+  // spam `Documents/My Games/<GameName>` directories for games the user
+  // isn't actually managing (see issue #55). Pass true only when we
+  // know the game is installed and likely to be used.
+  static QString determineMyGamesPath(const QString& gameName,
+                                      bool createIfMissing = false);
 
   static QString parseEpicGamesLocation(const QStringList& manifests);
 
diff --git a/libs/game_bethesda/src/games/enderalse/gameenderalse.cpp b/libs/game_bethesda/src/games/enderalse/gameenderalse.cpp
index 26587b8..e2f8952 100644
--- a/libs/game_bethesda/src/games/enderalse/gameenderalse.cpp
+++ b/libs/game_bethesda/src/games/enderalse/gameenderalse.cpp
@@ -55,7 +55,7 @@ void GameEnderalSE::detectGame()
 {
   m_GamePath = identifyGamePath();
   checkVariants();
-  m_MyGamesPath = determineMyGamesPath(gameDirectoryName());
+  m_MyGamesPath = determineMyGamesPath(gameDirectoryName(), !m_GamePath.isEmpty());
 }
 
 QString GameEnderalSE::identifyGamePath() const
@@ -99,7 +99,7 @@ void GameEnderalSE::setGamePath(const QString& path)
 {
   m_GamePath = path;
   checkVariants();
-  m_MyGamesPath = determineMyGamesPath(gameDirectoryName());
+  m_MyGamesPath = determineMyGamesPath(gameDirectoryName(), !m_GamePath.isEmpty());
 }
 
 QDir GameEnderalSE::savesDirectory() const
diff --git a/libs/game_bethesda/src/games/fallout3/gamefallout3.cpp b/libs/game_bethesda/src/games/fallout3/gamefallout3.cpp
index 75e1ea3..b0d3be7 100644
--- a/libs/game_bethesda/src/games/fallout3/gamefallout3.cpp
+++ b/libs/game_bethesda/src/games/fallout3/gamefallout3.cpp
@@ -104,7 +104,7 @@ void GameFallout3::detectGame()
 {
   m_GamePath = identifyGamePath();
   setGameVariant(identifyVariant());
-  m_MyGamesPath = determineMyGamesPath("Fallout3");
+  m_MyGamesPath = determineMyGamesPath("Fallout3", !m_GamePath.isEmpty());
 }
 
 QList<ExecutableInfo> GameFallout3::executables() const
diff --git a/libs/game_bethesda/src/games/fallout4/gamefallout4.cpp b/libs/game_bethesda/src/games/fallout4/gamefallout4.cpp
index 02d30cb..d1ba92f 100644
--- a/libs/game_bethesda/src/games/fallout4/gamefallout4.cpp
+++ b/libs/game_bethesda/src/games/fallout4/gamefallout4.cpp
@@ -63,7 +63,7 @@ QString GameFallout4::gameName() const
 void GameFallout4::detectGame()
 {
   m_GamePath    = identifyGamePath();
-  m_MyGamesPath = determineMyGamesPath("Fallout4");
+  m_MyGamesPath = determineMyGamesPath("Fallout4", !m_GamePath.isEmpty());
 }
 
 QList<ExecutableInfo> GameFallout4::executables() const
diff --git a/libs/game_bethesda/src/games/fallout4london/gamefo4london.cpp b/libs/game_bethesda/src/games/fallout4london/gamefo4london.cpp
index 646bf1c..06a39bd 100644
--- a/libs/game_bethesda/src/games/fallout4london/gamefo4london.cpp
+++ b/libs/game_bethesda/src/games/fallout4london/gamefo4london.cpp
@@ -65,7 +65,7 @@ QString GameFallout4London::gameName() const
 void GameFallout4London::detectGame()
 {
   m_GamePath    = identifyGamePath();
-  m_MyGamesPath = determineMyGamesPath("Fallout4");
+  m_MyGamesPath = determineMyGamesPath("Fallout4", !m_GamePath.isEmpty());
 }
 
 QString GameFallout4London::identifyGamePath() const
diff --git a/libs/game_bethesda/src/games/fallout4vr/gamefallout4vr.cpp b/libs/game_bethesda/src/games/fallout4vr/gamefallout4vr.cpp
index 852bf7d..e0e5e38 100644
--- a/libs/game_bethesda/src/games/fallout4vr/gamefallout4vr.cpp
+++ b/libs/game_bethesda/src/games/fallout4vr/gamefallout4vr.cpp
@@ -55,7 +55,7 @@ QString GameFallout4VR::gameName() const
 void GameFallout4VR::detectGame()
 {
   m_GamePath    = identifyGamePath();
-  m_MyGamesPath = determineMyGamesPath("Fallout4VR");
+  m_MyGamesPath = determineMyGamesPath("Fallout4VR", !m_GamePath.isEmpty());
 }
 
 QList<ExecutableInfo> GameFallout4VR::executables() const
diff --git a/libs/game_bethesda/src/games/fallout76/gamefallout76.cpp b/libs/game_bethesda/src/games/fallout76/gamefallout76.cpp
index bfeb507..c1348f3 100644
--- a/libs/game_bethesda/src/games/fallout76/gamefallout76.cpp
+++ b/libs/game_bethesda/src/games/fallout76/gamefallout76.cpp
@@ -50,7 +50,7 @@ QString GameFallout76::gameName() const
 void GameFallout76::detectGame()
 {
   m_GamePath    = identifyGamePath();
-  m_MyGamesPath = determineMyGamesPath(gameName());
+  m_MyGamesPath = determineMyGamesPath(gameName(), !m_GamePath.isEmpty());
 }
 
 QList<ExecutableInfo> GameFallout76::executables() const
diff --git a/libs/game_bethesda/src/games/falloutnv/gamefalloutnv.cpp b/libs/game_bethesda/src/games/falloutnv/gamefalloutnv.cpp
index 7a147e5..f7b9413 100644
--- a/libs/game_bethesda/src/games/falloutnv/gamefalloutnv.cpp
+++ b/libs/game_bethesda/src/games/falloutnv/gamefalloutnv.cpp
@@ -102,7 +102,7 @@ void GameFalloutNV::setGamePath(const QString& path)
 {
   m_GamePath = path;
   checkVariants();
-  m_MyGamesPath = determineMyGamesPath(gameDirectoryName());
+  m_MyGamesPath = determineMyGamesPath(gameDirectoryName(), !m_GamePath.isEmpty());
 }
 
 QDir GameFalloutNV::savesDirectory() const
@@ -137,7 +137,7 @@ void GameFalloutNV::detectGame()
 {
   m_GamePath = identifyGamePath();
   checkVariants();
-  m_MyGamesPath = determineMyGamesPath(gameDirectoryName());
+  m_MyGamesPath = determineMyGamesPath(gameDirectoryName(), !m_GamePath.isEmpty());
 }
 
 QList<ExecutableInfo> GameFalloutNV::executables() const
diff --git a/libs/game_bethesda/src/games/skyrimse/gameskyrimse.cpp b/libs/game_bethesda/src/games/skyrimse/gameskyrimse.cpp
index d0492af..377c65c 100644
--- a/libs/game_bethesda/src/games/skyrimse/gameskyrimse.cpp
+++ b/libs/game_bethesda/src/games/skyrimse/gameskyrimse.cpp
@@ -58,7 +58,7 @@ void GameSkyrimSE::detectGame()
 {
   m_GamePath = identifyGamePath();
   checkVariants();
-  m_MyGamesPath = determineMyGamesPath(gameDirectoryName());
+  m_MyGamesPath = determineMyGamesPath(gameDirectoryName(), !m_GamePath.isEmpty());
 }
 
 QString GameSkyrimSE::identifyGamePath() const
@@ -110,7 +110,7 @@ void GameSkyrimSE::setGamePath(const QString& path)
 {
   m_GamePath = path;
   checkVariants();
-  m_MyGamesPath = determineMyGamesPath(gameDirectoryName());
+  m_MyGamesPath = determineMyGamesPath(gameDirectoryName(), !m_GamePath.isEmpty());
 }
 
 QDir GameSkyrimSE::savesDirectory() const
diff --git a/libs/game_bethesda/src/games/starfield/gamestarfield.cpp b/libs/game_bethesda/src/games/starfield/gamestarfield.cpp
index c6c211a..ebec948 100644
--- a/libs/game_bethesda/src/games/starfield/gamestarfield.cpp
+++ b/libs/game_bethesda/src/games/starfield/gamestarfield.cpp
@@ -67,7 +67,7 @@ QString GameStarfield::gameName() const
 void GameStarfield::detectGame()
 {
   m_GamePath    = identifyGamePath();
-  m_MyGamesPath = determineMyGamesPath("Starfield");
+  m_MyGamesPath = determineMyGamesPath("Starfield", !m_GamePath.isEmpty());
 }
 
 QString GameStarfield::identifyGamePath() const
@@ -77,16 +77,36 @@ QString GameStarfield::identifyGamePath() const
 
 QDir GameStarfield::dataDirectory() const
 {
+#ifdef _WIN32
+  // On Windows, USVFS hooks both the game-side Data folder (where SFSE
+  // loads plugins from) and My Games\Starfield\Data (where loose content
+  // lives) transparently, so MO2 can report the My Games path as primary.
   QDir dataDir = documentsDirectory().absoluteFilePath("Data");
   if (!dataDir.exists())
     dataDir.mkdir(dataDir.path());
   return documentsDirectory().absoluteFilePath("Data");
+#else
+  // On Linux we have a single FUSE mount, so the primary dataDirectory
+  // MUST be the game-install Data folder — that's where SFSE looks for
+  // plugins. If the mount lived under My Games/Starfield/Data, the
+  // base game Data folder would only see dangling symlinks and SFSE
+  // plugins would silently fail to load. See issue #56.
+  return gameDirectory().absoluteFilePath("Data");
+#endif
 }
 
 QMap<QString, QDir> GameStarfield::secondaryDataDirectories() const
 {
   QMap<QString, QDir> directories;
+#ifdef _WIN32
   directories.insert("game_data", gameDirectory().absoluteFilePath("Data"));
+#else
+  // Primary is now gameDirectory/Data; My Games/Starfield/Data still
+  // needs to exist so the launcher and loose-file content work. Get it
+  // populated via the secondary-mapping symlink path.
+  directories.insert("documents_data",
+                     documentsDirectory().absoluteFilePath("Data"));
+#endif
   return directories;
 }
 
diff --git a/libs/game_bethesda/src/games/ttw/gamefalloutttw.cpp b/libs/game_bethesda/src/games/ttw/gamefalloutttw.cpp
index e09ddf0..7ba105b 100644
--- a/libs/game_bethesda/src/games/ttw/gamefalloutttw.cpp
+++ b/libs/game_bethesda/src/games/ttw/gamefalloutttw.cpp
@@ -126,7 +126,7 @@ void GameFalloutTTW::setGamePath(const QString& path)
 {
   m_GamePath = path;
   checkVariants();
-  m_MyGamesPath = determineMyGamesPath(gameDirectoryName());
+  m_MyGamesPath = determineMyGamesPath(gameDirectoryName(), !m_GamePath.isEmpty());
 }
 
 QDir GameFalloutTTW::savesDirectory() const
@@ -166,7 +166,7 @@ void GameFalloutTTW::detectGame()
 {
   m_GamePath = identifyGamePath();
   checkVariants();
-  m_MyGamesPath = determineMyGamesPath(gameDirectoryName());
+  m_MyGamesPath = determineMyGamesPath(gameDirectoryName(), !m_GamePath.isEmpty());
 }
 
 QList<ExecutableInfo> GameFalloutTTW::executables() const