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>

1 files changed, 25 insertions, 9 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 {};