feat(frontend): einheitliche Seiten-Header mit Icon-Badge

Neue PageHeader-Komponente (Gradient-Icon-Badge + Titel + Beschreibung
+ Aktionen) ersetzt die nackten <h1>-Zeilen auf den meistgenutzten
Seiten (Voelker, Bienenstaende, Koeniginnen, Aufgaben, Honigchargen,
Statistik, Webhooks, Benutzerverwaltung). Gradient variiert pro
Bereich (Honig/Salbei/Himmel), passend zum jeweiligen Sidebar-Icon.

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

@@ -2,12 +2,14 @@
 
 import { useState } from "react";
 import Link from "next/link";
+import { MapPin } from "lucide-react";
 import { useQuery } from "@tanstack/react-query";
 import { fetchApiaries } from "@/lib/apiaries/api";
 import { ApiaryStatus } from "@/lib/apiaries/types";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
 import { Input } from "@/components/ui/input";
+import { PageHeader } from "@/components/page-header";
 import {
   Select,
   SelectContent,
@@ -35,12 +37,16 @@ export default function ApiariesPage() {
 
   return (
     <main className="flex flex-col gap-4 p-4 sm:p-6">
-      <div className="flex items-center justify-between">
-        <h1 className="text-2xl font-semibold tracking-tight">Bienenstände</h1>
+      <PageHeader
+        icon={MapPin}
+        title="Bienenstände"
+        description="Standorte deiner Völker"
+        actions={
           <Button nativeButton={false} render={<Link href="/apiaries/new" />}>
             + Neuer Bienenstand
           </Button>
-      </div>
+        }
+      />
 
       <div className="flex flex-wrap items-center gap-3">
         <Select

ApiCore-Frontend/src/app/(app)/colonies/page.tsx

@@ -2,6 +2,7 @@
 
 import { useState } from "react";
 import Link from "next/link";
+import { Layers } from "lucide-react";
 import { useMutation, useQuery } from "@tanstack/react-query";
 import { fetchColonies } from "@/lib/colonies/api";
 import { ColonyStatus } from "@/lib/colonies/types";
@@ -9,6 +10,7 @@ import { exportColoniesCsv } from "@/lib/export/api";
 import { statusTone } from "@/lib/status-tone";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
+import { PageHeader } from "@/components/page-header";
 import {
   Select,
   SelectContent,
@@ -48,9 +50,12 @@ export default function ColoniesPage() {
 
   return (
     <main className="flex flex-col gap-4 p-4 sm:p-6">
-      <div className="flex items-center justify-between">
-        <h1 className="text-2xl font-semibold tracking-tight">Völker</h1>
-        <div className="flex gap-2">
+      <PageHeader
+        icon={Layers}
+        title="Völker"
+        description="Alle Bienenvölker im Überblick"
+        actions={
+          <>
             <Button
               variant="outline"
               disabled={exportMutation.isPending}
@@ -61,8 +66,9 @@ export default function ColoniesPage() {
             <Button nativeButton={false} render={<Link href="/colonies/new" />}>
               + Neues Volk
             </Button>
-        </div>
-      </div>
+          </>
+        }
+      />
 
       <Select
         value={status || "ALL"}

ApiCore-Frontend/src/app/(app)/honey-batches/page.tsx

@@ -2,6 +2,7 @@
 
 import { useState } from "react";
 import Link from "next/link";
+import { Droplet } from "lucide-react";
 import { useMutation, useQuery } from "@tanstack/react-query";
 import { fetchHoneyBatches } from "@/lib/honey-batches/api";
 import { HoneyBatchStatus } from "@/lib/honey-batches/types";
@@ -9,6 +10,7 @@ import { exportHoneyBatchesCsv } from "@/lib/export/api";
 import { statusTone } from "@/lib/status-tone";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
+import { PageHeader } from "@/components/page-header";
 import {
   Select,
   SelectContent,
@@ -49,9 +51,12 @@ export default function HoneyBatchesPage() {
 
   return (
     <main className="flex flex-col gap-4 p-4 sm:p-6">
-      <div className="flex items-center justify-between">
-        <h1 className="text-2xl font-semibold tracking-tight">Honigchargen</h1>
-        <div className="flex gap-2">
+      <PageHeader
+        icon={Droplet}
+        title="Honigchargen"
+        description="Vom Schleudern bis zur Abfüllung"
+        actions={
+          <>
             <Button
               variant="outline"
               disabled={exportMutation.isPending}
@@ -60,8 +65,9 @@ export default function HoneyBatchesPage() {
               CSV exportieren
             </Button>
             <CreateHoneyBatchDialog />
-        </div>
-      </div>
+          </>
+        }
+      />
 
       <Select
         value={status || "ALL"}

ApiCore-Frontend/src/app/(app)/queens/page.tsx

@@ -2,11 +2,13 @@
 
 import { useState } from "react";
 import Link from "next/link";
+import { Crown } from "lucide-react";
 import { useQuery } from "@tanstack/react-query";
 import { fetchQueens } from "@/lib/queens/api";
 import { QueenStatus } from "@/lib/queens/types";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
+import { PageHeader } from "@/components/page-header";
 import {
   Select,
   SelectContent,
@@ -44,12 +46,17 @@ export default function QueensPage() {
 
   return (
     <main className="flex flex-col gap-4 p-4 sm:p-6">
-      <div className="flex items-center justify-between">
-        <h1 className="text-2xl font-semibold tracking-tight">Königinnen</h1>
+      <PageHeader
+        icon={Crown}
+        title="Königinnen"
+        description="Zuchtlinien und Bewertungen"
+        gradient="var(--gradient-sage)"
+        actions={
           <Button nativeButton={false} render={<Link href="/queens/new" />}>
             + Neue Königin
           </Button>
-      </div>
+        }
+      />
 
       <Select
         value={status || "ALL"}

ApiCore-Frontend/src/app/(app)/settings/users/page.tsx

@@ -1,11 +1,13 @@
 "use client";
 
+import { Users } from "lucide-react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { toast } from "sonner";
 import { activateUser, deactivateUser, fetchUsers } from "@/lib/users/api";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
 import { ConfirmDialog } from "@/components/confirm-dialog";
+import { PageHeader } from "@/components/page-header";
 import {
   Table,
   TableBody,
@@ -45,10 +47,13 @@ export default function UsersPage() {
 
   return (
     <main className="flex flex-col gap-4 p-4 sm:p-6">
-      <div className="flex items-center justify-between">
-        <h1 className="text-2xl font-semibold tracking-tight">Benutzerverwaltung</h1>
-        <CreateUserDialog />
-      </div>
+      <PageHeader
+        icon={Users}
+        title="Benutzerverwaltung"
+        description="Zugänge und Rollen verwalten"
+        gradient="var(--gradient-sage)"
+        actions={<CreateUserDialog />}
+      />
 
       {isLoading ? <p className="text-sm text-muted-foreground">Lädt…</p> : null}
       {isError ? (

ApiCore-Frontend/src/app/(app)/settings/webhooks/page.tsx

@@ -1,10 +1,12 @@
 "use client";
 
+import { Webhook } from "lucide-react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { toast } from "sonner";
 import { deleteWebhook, fetchWebhooks } from "@/lib/webhooks/api";
 import { Badge } from "@/components/ui/badge";
 import { ConfirmDialog } from "@/components/confirm-dialog";
+import { PageHeader } from "@/components/page-header";
 import {
   Table,
   TableBody,
@@ -33,15 +35,13 @@ export default function WebhooksPage() {
 
   return (
     <main className="flex flex-col gap-4 p-4 sm:p-6">
-      <div className="flex items-center justify-between">
-        <div>
-          <h1 className="text-2xl font-semibold tracking-tight">Webhooks</h1>
-          <p className="text-sm text-muted-foreground">
-            Externe Systeme über Ereignisse in ApiCore benachrichtigen
-          </p>
-        </div>
-        <CreateWebhookDialog />
-      </div>
+      <PageHeader
+        icon={Webhook}
+        title="Webhooks"
+        description="Externe Systeme über Ereignisse in ApiCore benachrichtigen"
+        gradient="var(--gradient-sky)"
+        actions={<CreateWebhookDialog />}
+      />
 
       {isLoading ? <p className="text-sm text-muted-foreground">Lädt…</p> : null}
       {isError ? (

ApiCore-Frontend/src/app/(app)/statistics/page.tsx

@@ -1,5 +1,6 @@
 "use client";
 
+import { BarChart3 } from "lucide-react";
 import { useQuery } from "@tanstack/react-query";
 import { fetchApiaries } from "@/lib/apiaries/api";
 import { fetchColonies } from "@/lib/colonies/api";
@@ -12,6 +13,7 @@ import {
   fetchVarroaStats,
 } from "@/lib/statistics/api";
 import { StatBarList } from "@/components/stat-bar-list";
+import { PageHeader } from "@/components/page-header";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
 
@@ -286,10 +288,12 @@ export default function StatisticsPage() {
 
   return (
     <main className="flex flex-col gap-6 p-4 sm:p-6">
-      <div>
-        <h1 className="text-2xl font-semibold tracking-tight">Statistik</h1>
-        <p className="text-sm text-muted-foreground">Auswertungen über deine Imkerei</p>
-      </div>
+      <PageHeader
+        icon={BarChart3}
+        title="Statistik"
+        description="Auswertungen über deine Imkerei"
+        gradient="var(--gradient-sky)"
+      />
 
       <Tabs defaultValue="colonies">
         <TabsList className="w-full sm:w-fit">

ApiCore-Frontend/src/app/(app)/tasks/page.tsx

@@ -2,11 +2,13 @@
 
 import { useState } from "react";
 import Link from "next/link";
+import { ListTodo } from "lucide-react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { completeTask, fetchTasks } from "@/lib/tasks/api";
 import { TaskPriority, TaskStatus } from "@/lib/tasks/types";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
+import { PageHeader } from "@/components/page-header";
 import {
   Select,
   SelectContent,
@@ -56,12 +58,17 @@ export default function TasksPage() {
 
   return (
     <main className="flex flex-col gap-4 p-4 sm:p-6">
-      <div className="flex items-center justify-between">
-        <h1 className="text-2xl font-semibold tracking-tight">Aufgaben</h1>
+      <PageHeader
+        icon={ListTodo}
+        title="Aufgaben"
+        description="Was als Nächstes ansteht"
+        gradient="var(--gradient-sky)"
+        actions={
           <Button nativeButton={false} render={<Link href="/tasks/new" />}>
             + Neue Aufgabe
           </Button>
-      </div>
+        }
+      />
 
       <div className="flex flex-wrap items-center gap-3">
         <Select

ApiCore-Frontend/src/components/page-header.tsx

@@ -0,0 +1,38 @@
+import { ReactNode } from "react";
+import type { LucideIcon } from "lucide-react";
+
+interface PageHeaderProps {
+  icon: LucideIcon;
+  title: string;
+  description?: string;
+  gradient?: string;
+  actions?: ReactNode;
+}
+
+export function PageHeader({
+  icon: Icon,
+  title,
+  description,
+  gradient = "var(--gradient-honey)",
+  actions,
+}: PageHeaderProps) {
+  return (
+    <div className="flex flex-wrap items-center justify-between gap-3">
+      <div className="flex items-center gap-3">
+        <span
+          className="flex size-10 shrink-0 items-center justify-center rounded-xl text-white shadow-[var(--shadow-soft)]"
+          style={{ background: gradient }}
+        >
+          <Icon className="size-5" />
+        </span>
+        <div>
+          <h1 className="font-heading text-2xl font-semibold tracking-tight">{title}</h1>
+          {description ? (
+            <p className="text-sm text-muted-foreground">{description}</p>
+          ) : null}
+        </div>
+      </div>
+      {actions ? <div className="flex flex-wrap gap-2">{actions}</div> : null}
+    </div>
+  );
+}