feat(bot): chat answers questions in any state; OpenRouter via proxy from the RF server

A question asked mid-questionnaire, mid-check-in or during a crisis is answered right away (agent →
guidelines/instruction); the pending question is re-shown with its buttons (engine remembers the last
prompt), in a crisis the answer carries the emergency contacts and the crisis stays open until the doctor's
ack. Acute messages still get the fixed crisis script. OpenRouter blocks RF IPs: OPENROUTER_PROXY_URL routes
the agent through an HTTP proxy, as vobot does.

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

app/dialog/crisis.py

@@ -44,6 +44,10 @@ def open_crisis(ctx: Ctx, categories: list[str], source: str) -> Step:
     )
 
 
+def crisis_resource_lines(resources: list[CrisisResource]) -> list[str]:
+    return _resource_lines(resources)
+
+
 def no_consent_crisis_text(script: CrisisScript) -> str:
     """Crisis script without the "doctor notified" line — for people we may not (or did not) notify about."""
     return "\n".join([script.body, "", *_resource_lines(script.resources), "", script.grounding])