[BUG] phishing_v1 cassette replay is time-dependent: 4 items miss after some hours #346

Found 2026-11-09 while merging FIX-2 (#345). tests/integration/eval/test_cassettes.py::test_the_committed_cassettes_replay_offline_like_a_live_run[phishing_v1] passed earlier today and fails on main at fc0cf4f at 19:24 with no code change. phish-003, -004, -006 and -008 raise CassetteMiss in triage.assess (fast tier): the triage input hash differs from the recorded one.

Cause (suspected): a wall-clock value, such as the email's age or the time since it was received, goes into the triage prompt for email alerts.

Fix: derive any time-relative prompt input from the alert or eval clock, not the wall clock, so replays are deterministic. Then re-record only if the prompt content changes, and add a test that replays at two different wall-clock times.

This blocks every merge: safe_merge runs tests/integration/eval.