DisableAppTool

pm disable-user --user 0 <pkg> — disable a system or user app for the primary user without uninstalling it (hides it from the launcher, stops background activity). Reversible via EnableAppTool. Idempotent. Success is detected by "disabled-user" in stdout.

Privilege: requires a working ShellBackend.

Params: package_name (required).

On success the result map carries success (true), package_name, and state ("disabled").