Weather proxy: fall back to the classic request if 15-minute data is rejected

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

app/server.js

@@ -714,7 +714,14 @@ app.get('/api/weather', async (req, res) => {
       precipitation_unit: useMetric ? 'mm' : 'inch'
     });
 
-    const r = await fetchWithRetry(`https://api.open-meteo.com/v1/forecast?${params}`, { attempts: 3, timeoutMs: 12000, retryDelayMs: 500 });
+    let r;
+    try {
+      // Single quick attempt with 15-minute rain data; if Open-Meteo rejects it, fall back to the classic request
+      r = await fetchWithRetry(`https://api.open-meteo.com/v1/forecast?${params}`, { attempts: 1, timeoutMs: 12000 });
+    } catch (firstErr) {
+      params.delete('minutely_15'); params.delete('forecast_minutely_15');
+      r = await fetchWithRetry(`https://api.open-meteo.com/v1/forecast?${params}`, { attempts: 3, timeoutMs: 12000, retryDelayMs: 500 });
+    }
     const data = await r.json();
     setCache(cacheKey, data);
     return res.json(data);