fix(router): guard OperationalError si tables météo inexistantes

backend/app/routers/meteo.py

@@ -4,6 +4,7 @@ from typing import Any, Optional
 
 from fastapi import APIRouter, Depends, HTTPException, Query
 from sqlalchemy import text
+from sqlalchemy.exc import OperationalError
 from sqlmodel import Session
 
 from app.database import get_session
@@ -13,6 +14,7 @@ router = APIRouter(tags=["météo"])
 
 def _station_daily_summary(session: Session, iso_date: str) -> Optional[dict]:
     """Agrège les mesures horaires d'une journée en résumé."""
+    try:
         rows = session.exec(
             text(
                 "SELECT temp_ext, t_min, t_max, pluie_mm, vent_kmh, humidite "
@@ -20,6 +22,8 @@ def _station_daily_summary(session: Session, iso_date: str) -> Optional[dict]:
             ),
             params={"d": iso_date},
         ).fetchall()
+    except OperationalError:
+        return None
 
     if not rows:
         return None
@@ -46,12 +50,15 @@ def _station_daily_summary(session: Session, iso_date: str) -> Optional[dict]:
 
 def _station_current_row(session: Session) -> Optional[dict]:
     """Dernière mesure station (max 2h d'ancienneté)."""
+    try:
         row = session.exec(
             text(
                 "SELECT temp_ext, humidite, pression, pluie_mm, vent_kmh, vent_dir, uv, solaire, date_heure "
                 "FROM meteostation WHERE type='current' ORDER BY date_heure DESC LIMIT 1"
             )
         ).fetchone()
+    except OperationalError:
+        return None
 
     if not row:
         return None
@@ -64,6 +71,7 @@ def _station_current_row(session: Session) -> Optional[dict]:
 
 
 def _open_meteo_day(session: Session, iso_date: str) -> Optional[dict]:
+    try:
         row = session.exec(
             text(
                 "SELECT t_min, t_max, pluie_mm, vent_kmh, wmo, label, humidite_moy, sol_0cm, etp_mm "
@@ -71,6 +79,8 @@ def _open_meteo_day(session: Session, iso_date: str) -> Optional[dict]:
             ),
             params={"d": iso_date},
         ).fetchone()
+    except OperationalError:
+        return None
 
     if not row:
         return None