Players are verified when they're in the configured Steam group (public memberslistxml,
refetched every 10 minutes, kept on failure) or have an unexpired override row in
gv_verified, written by the web panel. Settings and data live in CS2-SimpleAdmin's MySQL
database (gv_verified, gv_settings, gv_migrations), reached through its API.
- css_gv_group <groupId64|0>, css_gv_enable, css_gv_disable (@css/root): verification runs
only when enabled with a group set.
- css_verify <target>: why a player is or isn't verified. Admin and above (by immunity from
SimpleAdmin's groups) plus Guardian, unless admin_overrides.json says otherwise.
- groupverify:api (shared/GroupVerifyApi): IsVerified, GetStatus, IsActive and
OnVerifiedChanged. The API object lives in the shared assembly, so it survives hot
reloads of GroupVerify.
