fix: chat replies in any situation — no false crisis re-fire, answers in crisis, medicine questions anywhere

- An acked crisis is not raised again for the same signal: re-raised only if a newer triggering scale exists
  (seen live: AUDIT-C 0/0/0 re-fired the acked PHQ-9 item 9 crisis).
- In an open crisis every non-acute message gets a reply (agent for questions, support otherwise) plus
  emergency contacts; acute messages still get the fixed script.
- Questions and medicine mentions without «?» are answered mid-questionnaire; free-text steps (check-in,
  side effects, question states) keep parsing their input.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_services_crisis_refire.py

@@ -0,0 +1,32 @@
+"""An acked crisis is not raised again for the same signal; a newer PHQ-9 with item 9 raises a new one."""
+
+from datetime import datetime, timedelta
+
+from app.core.rules import Action
+from app.core.types import AlertLevel
+from app.services import monitoring
+
+
+class _A:
+    def __init__(self, code, ts, scale=None):
+        self.code, self.ts, self.scale = code, ts, scale
+
+
+async def test_drop_handled_crises(monkeypatch):
+    t0 = datetime(2026, 10, 4, 16, 32)
+    alerts = [_A("phq9_item9", t0 + timedelta(seconds=1))]
+    results = [_A(None, t0, "phq9"), _A(None, t0 + timedelta(hours=2), "auditc")]
+
+    async def list_alerts(s, token):
+        return alerts
+
+    async def list_scale_results(s, token):
+        return results
+
+    monkeypatch.setattr(monitoring.repo, "list_alerts", list_alerts)
+    monkeypatch.setattr(monitoring.repo, "list_scale_results", list_scale_results)
+    crisis = Action(type="crisis", level=AlertLevel.ACUTE, code="phq9_item9")
+    other = Action(type="alert", level=AlertLevel.HIGH, code="phq9_severe")
+    assert await monitoring._drop_handled_crises(None, "t", [crisis, other]) == [other]  # AUDIT-C is not a trigger
+    results.append(_A(None, t0 + timedelta(hours=3), "phq9"))  # a new PHQ-9 after the alert
+    assert await monitoring._drop_handled_crises(None, "t", [crisis]) == [crisis]