Added hook coverage for cached directory hydration, alias lookup, and fallback behavior, plus broader Electron automation tests around hidden BrowserWindow upload flows and failure cases. useDirectoriesState() and related fallback paths now stay synchronized when the shared cache is already populated but the GitHub refresh fails.
Updated Android/Electron upload paths to fail deterministically and report consistent stage details, while removing unsafe stage casting and path/package mismatches. This keeps postimages automation behavior intact and makes failures easier to diagnose.
