Fall back when weather forecast is unavailable

README.md

@@ -254,6 +254,8 @@ available at `scripts/smoke_modal.py`.
 - Public pages use opaque slugs but are intentionally public for calendar use.
 - Plant identification and watering dates are suggestions, not horticultural
   guarantees.
+- If the weather API is unavailable, Waterleaf still generates dates from the
+  care baseline and labels them as seasonal estimates.
 - Dates after the 16-day forecast are labeled seasonal estimates.
 - ICS `ATTACH` support varies by calendar client; every event also includes a
   portable public profile link.

tests/test_adapters.py

@@ -211,6 +211,17 @@ def test_open_meteo_geocodes_and_parses_forecast():
     assert forecast[1].precipitation_mm == 7.2
 
 
+def test_open_meteo_uses_seasonal_schedule_when_forecast_is_rate_limited():
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(429, text="Too Many Requests")
+
+    client = OpenMeteoClient(
+        http_client=httpx.Client(transport=httpx.MockTransport(handler))
+    )
+
+    assert client.forecast(59.33, 18.07) == []
+
+
 def test_llama_cpp_sends_all_images_and_constrained_schema(tmp_path):
     image_paths: list[Path] = []
     for index in range(2):

waterleaf/services/open_meteo.py

@@ -32,28 +32,30 @@ class OpenMeteoClient:
         )
 
     def forecast(self, latitude: float, longitude: float) -> list[WeatherDay]:
-        response = self.http_client.get(
-            "https://api.open-meteo.com/v1/forecast",
-            params={
-                "latitude": latitude,
-                "longitude": longitude,
-                "daily": (
-                    "precipitation_sum,temperature_2m_max,"
-                    "et0_fao_evapotranspiration"
-                ),
-                "forecast_days": 16,
-                "timezone": "auto",
-            },
-        )
-        response.raise_for_status()
-        daily = response.json()["daily"]
-        return [
-            WeatherDay(
-                date=date.fromisoformat(day),
-                precipitation_mm=float(daily["precipitation_sum"][index] or 0),
-                max_temperature_c=float(daily["temperature_2m_max"][index] or 0),
-                et0_mm=float(daily["et0_fao_evapotranspiration"][index] or 0),
+        try:
+            response = self.http_client.get(
+                "https://api.open-meteo.com/v1/forecast",
+                params={
+                    "latitude": latitude,
+                    "longitude": longitude,
+                    "daily": (
+                        "precipitation_sum,temperature_2m_max,"
+                        "et0_fao_evapotranspiration"
+                    ),
+                    "forecast_days": 16,
+                    "timezone": "auto",
+                },
             )
-            for index, day in enumerate(daily["time"])
-        ]
-
+            response.raise_for_status()
+            daily = response.json()["daily"]
+            return [
+                WeatherDay(
+                    date=date.fromisoformat(day),
+                    precipitation_mm=float(daily["precipitation_sum"][index] or 0),
+                    max_temperature_c=float(daily["temperature_2m_max"][index] or 0),
+                    et0_mm=float(daily["et0_fao_evapotranspiration"][index] or 0),
+                )
+                for index, day in enumerate(daily["time"])
+            ]
+        except (httpx.HTTPError, KeyError, TypeError, ValueError):
+            return []