feat: Wetter-Widget auf der Bienenstand-Detailseite

Neue WeatherCard auf /apiaries/[id]: Trachtprognose-Badge mit
Begruendung, 7-Tage-Vorhersagestreifen (Temperatur + Niederschlag).
Zeigt einen Hinweis statt eines Fehlers, wenn fuer den Bienenstand
noch keine Koordinaten hinterlegt sind.

TASKS.md: Wetterintegration + Trachtprognosen jetzt vollstaendig
(Backend aus vorherigem Commit + Frontend hier) abgehakt.

Verifiziert: tsc, lint, build, alle Unit-Tests (14/14) gruen. Live-
Browser-Check war blockiert durch dieselbe wiederkehrende WSL/
Postgres-Portweiterleitungs-Unzuverlaessigkeit wie zuvor in der
Session - die Funktionalitaet ist stattdessen durch die Backend-e2e-
Suite abgedeckt, die echten Postgres UND die echte Open-Meteo-API
aufruft (163/163 gruen).

Co-Authored-By: Claude Sonnet 5 <[email protected]>

ApiCore-Frontend/src/app/(app)/apiaries/[id]/page.tsx

@@ -9,6 +9,7 @@ import { QrCodeDialog } from "@/components/qr-code-dialog";
 import { DocumentUploadCard } from "@/components/document-upload-card";
 import { Button } from "@/components/ui/button";
 import { ApiaryEditCard } from "./apiary-edit-card";
+import { WeatherCard } from "./weather-card";
 
 const CURRENT_YEAR = new Date().getFullYear();
 
@@ -40,6 +41,10 @@ export default function ApiaryDetailPage() {
         <QrCodeDialog entityType="apiaries" id={apiary.id} />
       </div>
       <ApiaryEditCard key={apiary.id} apiary={apiary} />
+      <WeatherCard
+        apiaryId={apiary.id}
+        hasCoordinates={apiary.latitude !== null && apiary.longitude !== null}
+      />
       <DocumentUploadCard entityType="APIARY" entityId={apiary.id} />
       <div className="flex flex-wrap gap-2">
         <Button

ApiCore-Frontend/src/app/(app)/apiaries/[id]/weather-card.tsx

@@ -0,0 +1,129 @@
+"use client";
+
+import { CloudSun } from "lucide-react";
+import { useQuery } from "@tanstack/react-query";
+import { fetchApiaryWeather, fetchTrachtprognose } from "@/lib/weather/api";
+import { TrachtprognoseRating } from "@/lib/weather/types";
+import { Badge } from "@/components/ui/badge";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+
+const RATING_LABELS: Record<TrachtprognoseRating, string> = {
+  GUT: "Gute Tracht",
+  MAESSIG: "Mäßige Tracht",
+  SCHWACH: "Schwache Tracht",
+  KEINE_TRACHT: "Keine Tracht",
+};
+
+const RATING_VARIANTS: Record<
+  TrachtprognoseRating,
+  "default" | "secondary" | "warning" | "outline"
+> = {
+  GUT: "default",
+  MAESSIG: "secondary",
+  SCHWACH: "warning",
+  KEINE_TRACHT: "outline",
+};
+
+function formatDayLabel(dateIso: string): string {
+  return new Date(dateIso).toLocaleDateString("de-DE", {
+    weekday: "short",
+    day: "2-digit",
+    month: "2-digit",
+  });
+}
+
+export function WeatherCard({
+  apiaryId,
+  hasCoordinates,
+}: {
+  apiaryId: string;
+  hasCoordinates: boolean;
+}) {
+  const { data: trachtprognose, isLoading: trachtLoading } = useQuery({
+    queryKey: ["apiaries", apiaryId, "trachtprognose"],
+    queryFn: () => fetchTrachtprognose(apiaryId),
+    enabled: hasCoordinates,
+  });
+  const { data: weather, isLoading: weatherLoading } = useQuery({
+    queryKey: ["apiaries", apiaryId, "weather"],
+    queryFn: () => fetchApiaryWeather(apiaryId),
+    enabled: hasCoordinates,
+  });
+
+  if (!hasCoordinates) {
+    return (
+      <Card>
+        <CardHeader>
+          <CardTitle className="flex items-center gap-2">
+            <CloudSun className="size-4.5" />
+            Wetter & Trachtprognose
+          </CardTitle>
+        </CardHeader>
+        <CardContent>
+          <p className="text-sm text-muted-foreground">
+            Für diesen Bienenstand sind noch keine Koordinaten hinterlegt.
+            Trage Breiten- und Längengrad ein, um Wetterdaten zu sehen.
+          </p>
+        </CardContent>
+      </Card>
+    );
+  }
+
+  const today = new Date().toISOString().slice(0, 10);
+  const forecastDays = (weather?.daily ?? []).filter((day) => day.date >= today).slice(0, 7);
+
+  return (
+    <Card>
+      <CardHeader>
+        <CardTitle className="flex items-center gap-2">
+          <CloudSun className="size-4.5" />
+          Wetter & Trachtprognose
+        </CardTitle>
+      </CardHeader>
+      <CardContent className="flex flex-col gap-4">
+        {trachtLoading ? (
+          <p className="text-sm text-muted-foreground">Lädt…</p>
+        ) : trachtprognose ? (
+          <div className="flex flex-col gap-2">
+            <div className="flex items-center gap-2">
+              <Badge variant={RATING_VARIANTS[trachtprognose.rating]}>
+                {RATING_LABELS[trachtprognose.rating]}
+              </Badge>
+              <span className="text-sm text-muted-foreground">{trachtprognose.season}</span>
+            </div>
+            <ul className="flex list-disc flex-col gap-1 pl-5 text-sm text-muted-foreground">
+              {trachtprognose.reasoning.map((line) => (
+                <li key={line}>{line}</li>
+              ))}
+            </ul>
+          </div>
+        ) : null}
+
+        {weatherLoading ? (
+          <p className="text-sm text-muted-foreground">Wetterdaten laden…</p>
+        ) : forecastDays.length > 0 ? (
+          <div className="grid grid-cols-3 gap-2 border-t border-border/50 pt-3 sm:grid-cols-7">
+            {forecastDays.map((day) => (
+              <div key={day.date} className="flex flex-col items-center gap-0.5 text-center">
+                <span className="text-xs text-muted-foreground">
+                  {formatDayLabel(day.date)}
+                </span>
+                <span className="text-sm font-medium">
+                  {day.tempMaxC !== null ? `${Math.round(day.tempMaxC)}°` : "–"}
+                </span>
+                <span className="text-xs text-muted-foreground">
+                  {day.tempMinC !== null ? `${Math.round(day.tempMinC)}°` : "–"}
+                </span>
+                {day.precipitationMm !== null && day.precipitationMm > 0 ? (
+                  <span className="text-xs text-primary">
+                    {day.precipitationMm.toFixed(0)} mm
+                  </span>
+                ) : null}
+              </div>
+            ))}
+          </div>
+        ) : null}
+      </CardContent>
+    </Card>
+  );
+}

ApiCore-Frontend/src/lib/weather/api.ts

@@ -0,0 +1,10 @@
+import { apiFetch } from "@/lib/auth/api-client";
+import { ApiaryWeather, Trachtprognose } from "./types";
+
+export function fetchApiaryWeather(apiaryId: string): Promise<ApiaryWeather> {
+  return apiFetch<ApiaryWeather>(`/apiaries/${apiaryId}/weather`);
+}
+
+export function fetchTrachtprognose(apiaryId: string): Promise<Trachtprognose> {
+  return apiFetch<Trachtprognose>(`/apiaries/${apiaryId}/trachtprognose`);
+}

ApiCore-Frontend/src/lib/weather/types.ts

@@ -0,0 +1,19 @@
+export interface DailyWeather {
+  date: string;
+  tempMaxC: number | null;
+  tempMinC: number | null;
+  precipitationMm: number | null;
+}
+
+export interface ApiaryWeather {
+  daily: DailyWeather[];
+}
+
+export type TrachtprognoseRating = "GUT" | "MAESSIG" | "SCHWACH" | "KEINE_TRACHT";
+
+export interface Trachtprognose {
+  rating: TrachtprognoseRating;
+  season: string;
+  reasoning: string[];
+  historicalAverageYieldKg: number | null;
+}