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, 57 insertions, 0 deletions

diff --git a/libs/uibase/src/filesystemutilities.cpp b/libs/uibase/src/filesystemutilities.cpp
index b027f5f..ba05699 100644
--- a/libs/uibase/src/filesystemutilities.cpp
+++ b/libs/uibase/src/filesystemutilities.cpp
@@ -95,4 +95,61 @@ QString resolveFileCaseInsensitive(const QString& path)
 #endif
 }
 
+QString resolvePathCaseInsensitive(const QString& path)
+{
+#ifdef _WIN32
+  return QDir::cleanPath(path);
+#else
+  const QString clean = QDir::cleanPath(path);
+  if (QFileInfo::exists(clean)) {
+    return clean;
+  }
+
+  // Walk each component and match case-insensitively against the real
+  // filesystem. Stops as soon as a component has no case-insensitive match;
+  // returns the cleaned input in that case.
+  const QString prefix = clean.startsWith('/') ? QStringLiteral("/") : QString();
+  const QStringList parts =
+      clean.split('/', Qt::SkipEmptyParts);
+
+  QString current = prefix;
+  for (int i = 0; i < parts.size(); ++i) {
+    const QString& want = parts[i];
+    const QString next  = current.isEmpty() ? want : current + '/' + want;
+
+    if (QFileInfo::exists(next)) {
+      current = next;
+      continue;
+    }
+
+    QDir dir(current.isEmpty() ? QStringLiteral(".") : current);
+    if (!dir.exists()) {
+      return clean;
+    }
+
+    const QDir::Filters filters = (i + 1 < parts.size())
+                                      ? (QDir::Dirs | QDir::NoDotAndDotDot |
+                                         QDir::Hidden | QDir::System)
+                                      : (QDir::Dirs | QDir::Files |
+                                         QDir::NoDotAndDotDot | QDir::Hidden |
+                                         QDir::System);
+
+    bool matched = false;
+    for (const QString& entry : dir.entryList(filters)) {
+      if (entry.compare(want, Qt::CaseInsensitive) == 0) {
+        current = current.isEmpty() ? entry : current + '/' + entry;
+        matched = true;
+        break;
+      }
+    }
+
+    if (!matched) {
+      return clean;
+    }
+  }
+
+  return current;
+#endif
+}
+
 }  // namespace MOBase