Merge origin/dev into feat/rag-clinical-guidelines

Conflict in app/api/routes.py: /demo/personas keeps the dev version (demo console, DB patients
with scenarios); the patient app gets its own /patient/demo-personas (synthetic ЕМИАС accounts).
Anonymous sign-in now always creates a doctor-less pseudonymous profile, since the dialog API
of #12 serves known profiles only.

Refs #77

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

app/dialog/flows/meds.py

@@ -42,7 +42,8 @@ from app.dialog.contracts import Button, Event, Reply
 from app.dialog.flows.core import menu_reply
 from app.dialog.fsm import Ctx, Step, abandonable, get_trigger, handler_for, state, trigger, trigger_payload
 from app.integrations.base import integrations
-from app.llm.med_qa import fallback_text, med_qa
+from app.llm import agent
+from app.llm.med_qa import DOSE_QUESTION, fallback_text, med_qa
 
 QUESTION_STATE = "meds.question"
 SIDE_EFFECT_TEXT_STATE = "meds.side_effect_text"
@@ -441,6 +442,11 @@ async def answer_question(ctx: Ctx, rx: Rx | None) -> str:
     """Answer from the instruction excerpt only (SPEC §7 п.5); dose questions and gaps → «уточните у врача»."""
     if rx is None or ctx.text is None:
         return load_meds_texts().question.no_prescription
+    if DOSE_QUESTION.search(ctx.text.lower()) is None:
+        # Agent: instruction + ЕМИАС record (other drugs, conditions, intolerances) + guidelines; else excerpt only.
+        smart = await agent.answer_chat(ctx.token, ctx.text)
+        if smart is not None:
+            return agent.render(smart)
     answer = await med_qa(rx.drug, ctx.text)
     return answer.text if answer is not None else fallback_text()