* Fix is_pkg_installed() opkg detection: use list-installed + exact grep match
opkg status always returns exit code 0 regardless of whether the package
is installed, making the previous check unreliable. Replace with
opkg list-installed piped through grep -q with an anchored pattern to
ensure exact package name matching without partial matches.
Co-authored-by: Slava-Shchipunov <92646230+Slava-Shchipunov@users.noreply.github.com>
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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Slava-Shchipunov <92646230+Slava-Shchipunov@users.noreply.github.com>
