feat(weather): live current conditions endpoint + polling display in briefing view

src/fabledassistant/services/weather.py

@@ -184,6 +184,54 @@ async def geocode(query: str) -> tuple[float, float, str]:
         return float(r["lat"]), float(r["lon"]), r.get("display_name", query)
 
 
+async def fetch_current_conditions(lat: float, lon: float) -> dict | None:
+    """Fetch current temperature + conditions + next 3 hours precipitation.
+
+    Lightweight call — no daily forecast, no caching needed.
+    Returns dict with: temperature, windspeed, weathercode, description,
+    and precip_next_3h (list of hourly precip probabilities).
+    """
+    try:
+        async with httpx.AsyncClient(timeout=10.0) as client:
+            resp = await client.get(OPEN_METEO_URL, params={
+                "latitude": lat,
+                "longitude": lon,
+                "current_weather": "true",
+                "hourly": "precipitation_probability",
+                "forecast_days": 1,
+                "timezone": "auto",
+            })
+            resp.raise_for_status()
+            data = resp.json()
+
+        current = data.get("current_weather", {})
+        hourly = data.get("hourly", {})
+        hourly_times = hourly.get("time", [])
+        hourly_precip = hourly.get("precipitation_probability", [])
+
+        # Find the current hour index and get next 3 hours of precip
+        current_time = current.get("time", "")
+        precip_next_3h = []
+        try:
+            idx = next(i for i, t in enumerate(hourly_times) if t >= current_time)
+            precip_next_3h = hourly_precip[idx:idx + 3]
+        except (StopIteration, IndexError):
+            pass
+
+        code = current.get("weathercode", 0)
+        return {
+            "temperature": current.get("temperature"),
+            "windspeed": current.get("windspeed"),
+            "weathercode": code,
+            "description": describe_weathercode(code),
+            "time": current_time,
+            "precip_next_3h": precip_next_3h,
+        }
+    except Exception:
+        logger.debug("Failed to fetch current conditions for %s, %s", lat, lon, exc_info=True)
+        return None
+
+
 async def _fetch_open_meteo(lat: float, lon: float) -> dict:
     """Fetch 7-day forecast from Open-Meteo with current conditions and yesterday's data."""
     async with httpx.AsyncClient(timeout=15.0) as client: