Route FEISHU_ALLOW_BOTS, FEISHU_GROUP_POLICY, FEISHU_ALLOWED_USERS,
FEISHU_BOT_*, FEISHU_APP_ID and FEISHU_REQUIRE_MENTION through
_get_scoped_secret, and snapshot FEISHU_ALLOW_ALL_USERS /
GATEWAY_ALLOW_ALL_USERS into settings.allow_all_dm at construct time so
_admit (running on the lark_oapi WS thread, no secret scope) no longer
reads the default profile's os.environ. Feishu open_ids are app-scoped,
so a secondary bot's DMs were always dm_policy_rejected against the
default profile's allow-list.
Salvaged from PR #86908 trimmed to the adapter call-site migration; the
fail-closed _get_scoped_secret / _auth_env rewrites are already on main
(2912c36aa4, agent/secret_scope.py get_secret policy).
SHT
9f40d3bdd0