Reading Library V4.3.10 — Customer-friendly Windows updater
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This release improves the Windows update experience without changing the Reading Library teaching workflow.

Changes:
- Replaces the technical PowerShell/WebRequest progress display with a dedicated Reading Library Update window.
- Explains clearly why the update is offered and what it changes.
- Makes the update safety model visible: HTTPS download, SHA-256 verification and automatic application-file backup.
- States that the updater only replaces files inside the Reading Library application folder and does not change Windows settings, other installed programs or personal documents.
- Shows download progress using downloaded size, total size, amount remaining and percentage complete.
- Shows five clear update stages: download, verify, prepare, back up and install.
- Shows installation progress using application files completed and files remaining.
- Closes the command window so customers see the branded updater rather than technical PowerShell output.
- Improves successful-update and safely-stopped messages.

All V4.3.9 Reading Text zoom, premium resource panels, Reading Framework, Discover and UK/US localisation functionality is retained.
