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hosts/docs/adr/0001-privileged-mode-gates-writes.md
phg e268794564 Fix #13: Expose Pre-edit Backup restoration 
Preserve full diff opcodes before grouping, route modal navigation to a two-axis viewport-sized scroller, and calculate side-by-side layout using terminal cell widths so tabbed Hosts File lines keep a stable divider.
2026-09-04 21:37:51 +02:00

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Privileged mode gates system-file writes

The application starts read-only and permits changes to /etc/hosts only after sudo access has been validated and a timestamped backup has been created. All privileged writes go through HostsManager during that mode. This makes the authorization boundary visible to the user and guarantees a pre-edit safety snapshot. While Privileged Mode remains active, the TUI exposes that session's exact Pre-edit Backup path and can restore it after explicit confirmation. The restore confirmation identifies both the backup source and Hosts File target; it presents an exact-file Git-style diff and rechecks both reviewed files before restoring. On success the application reloads the Hosts File and clears undo/redo history.