Migrate data paths to ~/.local/share/fluorine/, add native build, fix %command% and system Proton scanning

- All data paths migrated from ~/.var/app/com.fluorine.manager/ to
  ~/.local/share/fluorine/ so native and Flatpak builds share the same
  instances, plugins, and configs
- New fluorinepaths.h/.cpp with fluorineDataDir() helper and one-time
  migration from old path (writes MOVED.txt breadcrumb)
- New libs/nak/src/paths.rs as Rust equivalent (data_dir())
- Strip %command% tokens from launch wrapper in protonlauncher.cpp
- Always scan /usr/share/steam/compatibilitytools.d/ for system Proton
  packages (Arch installs Proton there); add Flatpak filesystem permission
- Native build (build-native.sh) installs to ~/.local/share/fluorine/
  with desktop entry and ~/.local/bin symlink instead of portable zip
- build-flatpak.sh wrapper for Flatpak builds
- Fix container locale (LANG=C.UTF-8) for AutoUic warnings
- Fix prefixExists() to handle both compatdata and pfx directory layouts
- Fix globalInstancesRootPath() to use fluorineDataDir() on Linux
- Fix umu-run Flatpak lookup to use fluorineDataDir()
- Update README with build instructions and Arch dependency list

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

1 files changed, 2 insertions, 1 deletions

diff --git a/libs/game_bethesda/src/games/fallout4/fallout4savegame.cpp b/libs/game_bethesda/src/games/fallout4/fallout4savegame.cpp
index 2f88d1b..17863ad 100644
--- a/libs/game_bethesda/src/games/fallout4/fallout4savegame.cpp
+++ b/libs/game_bethesda/src/games/fallout4/fallout4savegame.cpp
@@ -4,6 +4,7 @@
 #include <Windows.h>
 #else
 #include <QDateTime>
+#include <QTimeZone>
 
 using SYSTEMTIME = _SYSTEMTIME;
 
@@ -14,7 +15,7 @@ static void FileTimeToSystemTime(const FILETIME* ft, SYSTEMTIME* st)
   const int64_t unixSecs = static_cast<int64_t>(ticks / 10000000ULL) - 11644473600LL;
   const uint64_t remainderHns = ticks % 10000000ULL;
 
-  const QDateTime dt = QDateTime::fromSecsSinceEpoch(unixSecs, Qt::UTC);
+  const QDateTime dt = QDateTime::fromSecsSinceEpoch(unixSecs, QTimeZone::UTC);
   const QDate d      = dt.date();
   const QTime t      = dt.time();