订阅链路测试 · Delivery test (ignore)
这是一封一次性测试信：验证 Deep-Risk-OPP 订阅链路（订阅 → 收信）已打通。
忽略即可，下一封就是正式信号。
This is a one-off test email verifying the Deep-Risk-OPP subscription pipeline (subscribe -> inbox). Safe to ignore - the next one will be the real signal.
justinjchen-cornell.github.io/Deep-Risk-OPP/
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