Extract egress_resolve_token_values_with_provider into bot_bottle/egress.py.
Both docker and smolmachines launch paths now call the shared function
instead of duplicating the forward_host_credentials / CODEX_HOST_CREDENTIAL_TOKEN_REF
resolution block.
Also fixes the host_env: object annotation on smolmachines._resolve_token_env
to the correct dict[str, str].
Closes#118.
didericis-claude
didericis-codex