Clip Pocket 0.5.3

Bug fix

• fixes a startup crash where the UI applied language strings before the platform host was initialized
• adds a regression test for status-key lookup during early UI initialization

Validation

• 77 tests OK
• py_compile OK
• uv run --extra build python tools/build_exe.py --clean OK through Windows uv.exe
• built dist/windows/ClipPocket/ClipPocket.exe
• smoke-started the built executable without the initialization traceback