gplay games (Play Games Services configuration)

gplay games configures a game's Play Games Services resources, achievement and leaderboard configurations, each with the full CRUD set (list / view / create / update / delete). It is an Admin API surface: the developer configures the game. It is not the Play Games Services runtime the game itself calls (sign-in, score submission); that is out of scope. Shared conventions (auth, output, exit codes, --dry-run/--confirm) are in gplay-cli-usage. The whole namespace is [experimental].

Addressing: --application-id, not --package

This is the trap. Play Games resources are keyed by the numeric Play Games application ID (a distinct ID space), not the Android package name. --application-id <numeric-id> is required on list and create; the per-resource commands view / update / delete are addressed by the achievement/leaderboard id alone (no --application-id). The .gplay/config.json package pin does not apply anywhere here.