- discord/telegram/slack/matrix standalone senders read bot tokens via
get_secret (in-turn: they run inside an installed scope — cron scheduler
and delegate spawns propagate it), never borrowing another profile's
env-bridged token under multiplex.
- telegram webhook-secret and matrix access-token/password startup reads
use the Slack pattern (#59739): get_secret, falling back to os.environ
only on UnscopedSecretError.