Add sensor freshness checks

custom_components/heating_mpc/config_flow.py

@@ -9,6 +9,7 @@ from homeassistant.core import callback
 from homeassistant.helpers import selector
 
 from .const import (
+    CONF_ROOM_MAX_AGE, CONF_WEATHER_MAX_AGE,
     DOMAIN, CONF_CLIMATE, CONF_HEATER, CONF_OUTSIDE, CONF_ROOMS,
     CONF_WEIGHTS, CONF_HORIZON, CONF_MIN_ON, CONF_MIN_OFF,
     CONF_SWITCH_COST, CONF_HEAT_COST, CONF_BAND, DEFAULTS,
@@ -37,6 +38,9 @@ def _main_schema(config: dict[str, Any] | None = None, detailed: bool = False):
             selector.EntitySelectorConfig(domain="switch")),
         _required(CONF_ROOMS, data): _entity_picker(multiple=True),
     }
+    for key in (CONF_ROOM_MAX_AGE, CONF_WEATHER_MAX_AGE):
+        schema[vol.Required(key, default=data.get(key, DEFAULTS[key]))] = vol.All(
+            vol.Coerce(int), vol.Range(min=5, max=1440))
     if detailed:
         for key, allowed in {
             CONF_HORIZON: vol.In([60, 90, 120, 150, 180]),