Sprint 11: Freunde & Chat + Phosphor-Icon-Vollmigration

- Freundschaften (pending/accepted), Nutzersuche, Anfragen per Push
- Direktnachrichten mit Polling, iMessage-Stil, Deep-Links aus Push
- Alle Seiten (map, places, diary, health, dog-profile, sitting, knigge,
  forum, wiki, walks) vollständig auf Phosphor-Icons migriert
- Wikidata-Rassen-Scraper (~833 neue Rassen, lokal gespiegelte Fotos)
- TheDogAPI lokal gespiegelt (169 Rassen + Fotos)
- Quiz-Result-Cards horizontal (korrekte Bildproportionen)
- SW by-v89

backend/weather.py

@@ -0,0 +1,71 @@
+"""
+BAN YARO — Wetter-Zusammenfassung via Open-Meteo
+Prüft mehrere deutsche Städte und liefert max. Temperatur und Gewitterwarnung.
+"""
+
+import logging
+import httpx
+
+logger = logging.getLogger(__name__)
+
+# Wichtige deutsche Städte als Stichprobe
+CITIES = [
+    {"name": "Berlin",    "lat": 52.52, "lon": 13.41},
+    {"name": "München",   "lat": 48.14, "lon": 11.58},
+    {"name": "Hamburg",   "lat": 53.55, "lon": 10.00},
+    {"name": "Frankfurt", "lat": 50.11, "lon":  8.68},
+    {"name": "Köln",      "lat": 50.94, "lon":  6.96},
+]
+
+# WMO-Wettercodes 95–99 = Gewitter
+THUNDERSTORM_CODES = {95, 96, 99}
+
+
+async def get_weather_summary() -> dict:
+    """
+    Holt Tagesprognose für mehrere deutsche Städte von Open-Meteo.
+    Gibt zurück: {"max_temp_c": float, "thunderstorm": bool}
+    """
+    max_temp = -999.0
+    thunderstorm = False
+
+    async with httpx.AsyncClient(timeout=10.0) as client:
+        for city in CITIES:
+            url = (
+                "https://api.open-meteo.com/v1/forecast"
+                f"?latitude={city['lat']}&longitude={city['lon']}"
+                "&daily=temperature_2m_max,precipitation_probability_max,weathercode"
+                "&timezone=Europe%2FBerlin&forecast_days=1"
+            )
+            try:
+                resp = await client.get(url)
+                resp.raise_for_status()
+                data = resp.json()
+
+                daily = data.get("daily", {})
+                temps = daily.get("temperature_2m_max", [None])
+                precip_probs = daily.get("precipitation_probability_max", [None])
+                weathercodes = daily.get("weathercode", [None])
+
+                temp = temps[0] if temps else None
+                precip_prob = precip_probs[0] if precip_probs else None
+                weathercode = weathercodes[0] if weathercodes else None
+
+                if temp is not None and temp > max_temp:
+                    max_temp = temp
+
+                if (
+                    precip_prob is not None and precip_prob > 50
+                    and weathercode is not None and int(weathercode) in THUNDERSTORM_CODES
+                ):
+                    thunderstorm = True
+                    logger.info(f"Gewitter erkannt: {city['name']} (Code {weathercode}, {precip_prob}% Niederschlag)")
+
+            except Exception as e:
+                logger.warning(f"Wetter-Abruf für {city['name']} fehlgeschlagen: {e}")
+
+    if max_temp == -999.0:
+        max_temp = 0.0
+
+    logger.info(f"Wetter-Zusammenfassung: max_temp={max_temp}°C, thunderstorm={thunderstorm}")
+    return {"max_temp_c": max_temp, "thunderstorm": thunderstorm}