7abdc938ee
For a multiplexed secondary the middleware wrote a top-level YUANBAO_HOME_CHANNEL key that load_gateway_config never reads and skipped the (correctly suppressed) process-env write, so cron and home-channel delivery had no target in-process and none after a reload either. Persist through the gateway's persist_home_channel (the profile-aware config path every /sethome uses) and set the live PlatformConfig.home_channel; the process env is still untouched under a secondary's scope. Refs #108440 (ehz0ah inline, gateway/platforms/yuanbao.py)