fix(bot): chat agent — ГРЛС excerpts in drug check, questions with alcohol answered, retry, clearer logs

Live run through the API (Andrey, real OpenRouter): onset questions now answered from the instruction
excerpt, «можно пиво?» reaches the agent although the check-in records alcohol, quit intent keeps the single
rule reaction, findings are mentioned only for intake/combination questions, one retry on a provider error,
provider error message logged.

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

app/llm/agent/tools.py

@@ -10,6 +10,7 @@ import re
 from dataclasses import dataclass, field
 from typing import Any
 
+from app.integrations.base import integrations
 from app.integrations.emias_record import PatientRecord, emias_records
 from app.llm.agent.drug_safety import check_patient, find_drug, load_db
 from app.llm.rag import retrieve
@@ -183,10 +184,12 @@ async def _check(ctx: ToolContext, name: str) -> dict[str, Any]:
             if hit
             else "в примере состава этого вещества нет; состав зависит от производителя."
         )
+    instruction = await _instruction(ctx, entry.inn)
     return {
         "found": True,
         "inn": entry.inn,
         "record": True,
+        "instruction": instruction,  # ГРЛС excerpts: onset, side effects, discontinuation, administration
         "findings": [f.model_dump() for f in findings],
         "intolerance_check": intolerance_check,
         "composition": comp.model_dump(exclude={"excipient_tags"}) if comp else None,
@@ -196,5 +199,21 @@ async def _check(ctx: ToolContext, name: str) -> dict[str, Any]:
     }
 
 
+INSTRUCTION_SECTIONS = ("onset", "side_effects", "discontinuation", "administration", "alcohol")
+
+
+async def _instruction(ctx: ToolContext, inn: str) -> dict[str, str]:
+    """ГРЛС excerpts for the drug (no doses in mg — see data/meds/grls)."""
+    try:
+        sections = await integrations.drug_info.sections(inn)
+    except Exception as exc:  # noqa: BLE001
+        log.error("drug_info unavailable: %s", type(exc).__name__)
+        return {}
+    out = {s.section: s.text for s in sections if s.section in INSTRUCTION_SECTIONS}
+    if out:
+        ctx.cite(sections[0].source.split(",")[0] + ": инструкция к препарату")
+    return out
+
+
 def _json(data: Any) -> str:
     return json.dumps(data, ensure_ascii=False)