feat: weather card — precip probability %, condition text, unit-aware wind

- Fetch precipitation_probability_max from Open-Meteo (replaces precip_sum
  in the card display — probability is more useful at a glance than mm)
- Show WMO condition description text on each forecast day
- Convert wind speed to mph when temp unit is F; pass wind_unit in response
- Display 💧 X% chance of rain; 💨 X mph/km/h wind per day

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/WeatherCard.vue

@@ -6,7 +6,7 @@ interface ForecastDay {
   condition: string
   high: number
   low: number
-  precip_mm: number
+  precip_probability: number | null
   windspeed_max: number
 }
 
@@ -19,6 +19,7 @@ interface WeatherData {
   today_low: number | null
   yesterday_high: number | null
   yesterday_low: number | null
+  wind_unit?: string
   forecast: ForecastDay[]
 }
 
@@ -87,10 +88,11 @@ const fetchedAtLabel = computed(() => {
       <div v-for="day in weather.forecast" :key="day.day" class="weather-forecast-day">
         <span class="forecast-day-name">{{ day.day }}</span>
         <span class="forecast-icon">{{ weatherIcon(day.condition) }}</span>
+        <span class="forecast-condition">{{ day.condition }}</span>
         <span class="forecast-temps">{{ day.high }}° / {{ day.low }}°</span>
-        <span v-if="day.precip_mm > 0" class="forecast-precip">💧 {{ day.precip_mm }}mm</span>
-        <span v-else class="forecast-precip forecast-precip--dry">—</span>
-        <span class="forecast-wind">💨 {{ day.windspeed_max }}km/h</span>
+        <span v-if="day.precip_probability != null && day.precip_probability > 0" class="forecast-precip">💧 {{ day.precip_probability }}%</span>
+        <span v-else class="forecast-precip forecast-precip--dry">💧 —</span>
+        <span class="forecast-wind">💨 {{ day.windspeed_max }} {{ weather.wind_unit ?? 'km/h' }}</span>
       </div>
     </div>
   </div>
@@ -186,6 +188,14 @@ const fetchedAtLabel = computed(() => {
   line-height: 1;
 }
 
+.forecast-condition {
+  font-size: 0.7rem;
+  color: var(--color-text-muted);
+  text-align: center;
+  line-height: 1.2;
+  word-break: break-word;
+}
+
 .forecast-temps {
   white-space: nowrap;
 }

frontend/src/views/BriefingView.vue

@@ -35,7 +35,8 @@ interface WeatherData {
   today_low: number | null
   yesterday_high: number | null
   yesterday_low: number | null
-  forecast: { day: string; condition: string; high: number; low: number; precip_mm: number; windspeed_max: number }[]
+  wind_unit?: string
+  forecast: { day: string; condition: string; high: number; low: number; precip_probability: number | null; windspeed_max: number }[]
 }
 
 const chatStore = useChatStore()

src/fabledassistant/services/weather.py

@@ -15,7 +15,7 @@ NOMINATIM_URL = "https://nominatim.openstreetmap.org/search"
 OPEN_METEO_URL = "https://api.open-meteo.com/v1/forecast"
 OPEN_METEO_DAILY = (
     "temperature_2m_max,temperature_2m_min,precipitation_sum,"
-    "weathercode,windspeed_10m_max"
+    "precipitation_probability_max,weathercode,windspeed_10m_max"
 )
 
 # WMO weather code → description (subset; covers the most common codes)
@@ -42,12 +42,14 @@ def parse_forecast(raw: dict) -> list[dict]:
     """Convert Open-Meteo daily response into a clean list of day dicts."""
     daily = raw.get("daily", {})
     dates = daily.get("time", [])
+    precip_prob = daily.get("precipitation_probability_max", [])
     return [
         {
             "date": dates[i],
             "temp_max": daily.get("temperature_2m_max", [])[i],
             "temp_min": daily.get("temperature_2m_min", [])[i],
             "precip_mm": daily.get("precipitation_sum", [])[i],
+            "precip_probability": precip_prob[i] if i < len(precip_prob) else None,
             "weathercode": daily.get("weathercode", [])[i],
             "description": describe_weathercode(daily.get("weathercode", [])[i]),
             "windspeed_max": daily.get("windspeed_10m_max", [])[i],
@@ -119,10 +121,13 @@ def parse_weather_card_data(
     yesterday_day = next((d for d in days if d["date"] == yesterday_str), None)
     future_days = [d for d in days if d["date"] > today_str][:5]
 
+    imperial = temp_unit == "F"
+
     def to_temp(c: float) -> int:
-        if temp_unit == "F":
-            return round(c * 9 / 5 + 32)
-        return round(c)
+        return round(c * 9 / 5 + 32) if imperial else round(c)
+
+    def to_wind(kmh: float) -> int:
+        return round(kmh * 0.621371) if imperial else round(kmh)
 
     def day_label(date_str: str) -> str:
         from datetime import date as _date
@@ -131,6 +136,8 @@ def parse_weather_card_data(
         except ValueError:
             return date_str
 
+    wind_unit = "mph" if imperial else "km/h"
+
     return {
         "location": getattr(cache_row, "location_label", ""),
         "fetched_at": cache_row.fetched_at.isoformat(),
@@ -140,14 +147,15 @@ def parse_weather_card_data(
         "today_low": to_temp(today_day["temp_min"]) if today_day else None,
         "yesterday_high": to_temp(yesterday_day["temp_max"]) if yesterday_day else None,
         "yesterday_low": to_temp(yesterday_day["temp_min"]) if yesterday_day else None,
+        "wind_unit": wind_unit,
         "forecast": [
             {
                 "day": day_label(d["date"]),
                 "condition": d["description"],
                 "high": to_temp(d["temp_max"]),
                 "low": to_temp(d["temp_min"]),
-                "precip_mm": round(d["precip_mm"], 1),
-                "windspeed_max": round(d["windspeed_max"]),
+                "precip_probability": d["precip_probability"],
+                "windspeed_max": to_wind(d["windspeed_max"]),
             }
             for d in future_days
         ],