chore: update version to 1.6.3 in documentation and configuration files

chore: bump gpui preview to 2.0.0-gpui-preview.6

OxideTerm GPUI preview 5

chore: bump version to 1.6.2

fix: release 1.6.1 upstream proxy patch

fix: repair native preview packaging workflow

chore: update version to 1.6.0 in documentation and configuration files

OxideTerm GPUI preview 3

feat: update privilege prompt detection to handle generic password pr…

…ompts without command guessing

fix: keep appimage agent payloads architecture-neutral