BW Crafting Tool by Arg v0.14.2-beta

Critical fix:
- UI updates from background Worker results now use QObject @Slot handlers.
- Every cross-thread Worker connection explicitly uses Qt.ConnectionType.QueuedConnection.
- QRunnable auto-delete is disabled.
- Workers are retained until a queued release signal reaches the GUI thread.
- Inventory/Encyclopedia still allow only one official request at a time and do not queue clicks.
- crash.log now records item-fetch breadcrumbs.

Build:
1. Extract this directory.
2. Run build_exe_windows.bat.
3. Launch dist\BW_Crafting_Tool_by_Arg_v0_14_2.exe.

Do not test by launching the older v0_14 or v0_14_1 executable.
