Under gateway.multiplex_profiles every secondary profile's config loads inside
_profile_runtime_scope, yet every apply_yaml_config_fn hook (feishu, matrix,
whatsapp, slack, dingtalk, discord non-gate keys, telegram non-gate keys) and
gateway/config_loader.py::bridge_core_env_settings still wrote os.environ there.
First-writer-wins: the first secondary with a require_mention / allowlist /
allow_bots / reactions block made that policy the DEFAULT profile's (live:
TELEGRAM_REQUIRE_MENTION written from a secondary load), and secondaries read
the default's env for the same keys.
- gateway/platforms/_shared.py::yaml_env_setter: the one env-write shape for
YAML->env bridges — env wins, skipped under an active secondary scope.
- Every hook now seeds its values into the profile's PlatformConfig.extra and
uses yaml_env_setter; bridge_core_env_settings seeds telegram/signal
require_mention into extra and skips the env write under scope.
- Readers that bypassed extra/scope now consult extra first (matrix flags +
session_scope, slack reactions, telegram reactions/mention_patterns/_extra_bool,
discord reactions/auto_thread/history_backfill/approval_mentions/allow_mentions,
feishu allow_bots, dingtalk mention_patterns, signal require_mention).
Salvages the shape of PR #100604 (whatsapp, earliest report #80099), #100435
(discord) and #100448 (telegram) by @nftpoetrist on top of current main.
Fixes#80099
Co-authored-by: nftpoetrist <264138787+nftpoetrist@users.noreply.github.com>
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