feat(frontend): Kartenansicht für Bienenstände (Später-Liste)

Neue Seite /apiaries/map zeigt alle Bienenstände mit hinterlegten
Koordinaten auf einer Leaflet-Karte (OpenStreetMap-Kacheln), mit
Marker-Popup, das zum jeweiligen Bienenstand verlinkt. Karte wird
per next/dynamic mit ssr:false geladen, da Leaflet auf window/document
zugreift.

Breiten-/Längengrad waren zwar seit dem MVP im Backend-DTO vorhanden,
aber über kein Formular erreichbar – ohne diese Lücke wäre die Karte
dauerhaft leer geblieben. Daher Breitengrad-/Längengrad-Felder auf der
Bienenstand-Anlegen- und Bearbeiten-Seite ergänzt.

Marker-Icons werden aus public/leaflet/ bedient statt aus
node_modules-Bild-Imports, da Turbopack Bilder aus node_modules nicht
als StaticImageData auflöst (führte zu "iconUrl not set"-Laufzeitfehler,
live im Browser gefunden und behoben) – der von Leaflet empfohlene
Workaround für Bundler-Icon-Probleme.

Live verifiziert: Koordinaten speichern, Karte zeigt Marker an
korrekter Position, Popup verlinkt korrekt, Empty State bei fehlenden
Koordinaten, mobile Breite ohne Overflow. Zero Konsolenfehler.

ApiCore-Frontend/package-lock.json

@@ -1,22 +1,24 @@
 {
-  "name": "apicore-frontend-tmp",
+  "name": "apicore-frontend",
   "version": "0.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "apicore-frontend-tmp",
+      "name": "apicore-frontend",
       "version": "0.1.0",
       "dependencies": {
         "@base-ui/react": "^1.7.0",
         "@tanstack/react-query": "^5.101.4",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
+        "leaflet": "^1.9.4",
         "lucide-react": "^1.33.0",
         "next": "16.3.1",
         "next-themes": "^0.4.6",
         "react": "19.2.8",
         "react-dom": "19.2.8",
+        "react-leaflet": "^5.0.0",
         "shadcn": "^4.18.0",
         "sonner": "^2.0.8",
         "tailwind-merge": "^3.6.0",
@@ -27,6 +29,7 @@
         "@testing-library/jest-dom": "^7.0.1",
         "@testing-library/react": "^16.3.2",
         "@testing-library/user-event": "^14.6.5",
+        "@types/leaflet": "^1.9.22",
         "@types/node": "^20",
         "@types/react": "^19",
         "@types/react-dom": "^19",
@@ -2690,6 +2693,17 @@
         "node": ">=12.4.0"
       }
     },
+    "node_modules/@react-leaflet/core": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/@react-leaflet/core/-/core-3.0.0.tgz",
+      "integrity": "sha512-3EWmekh4Nz+pGcr+xjf0KNyYfC3U2JjnkWsh0zcqaexYqmmB5ZhH37kz41JXGmKzpaMZCnPofBBm64i+YrEvGQ==",
+      "license": "Hippocratic-2.1",
+      "peerDependencies": {
+        "leaflet": "^1.9.0",
+        "react": "^19.0.0",
+        "react-dom": "^19.0.0"
+      }
+    },
     "node_modules/@rolldown/pluginutils": {
       "version": "1.0.0-beta.27",
       "resolved": "https://registry.npmjs.org/@rolldown/pluginutils/-/pluginutils-1.0.0-beta.27.tgz",
@@ -3710,6 +3724,13 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/geojson": {
+      "version": "7946.0.16",
+      "resolved": "https://registry.npmjs.org/@types/geojson/-/geojson-7946.0.16.tgz",
+      "integrity": "sha512-6C8nqWur3j98U6+lXDfTUWIfgvZU+EumvpHKcYjujKH7woYyLj2sUmff0tRhrqM7BohUw7Pz3ZB1jj2gW9Fvmg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/json-schema": {
       "version": "7.0.15",
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
@@ -3724,6 +3745,16 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/leaflet": {
+      "version": "1.9.22",
+      "resolved": "https://registry.npmjs.org/@types/leaflet/-/leaflet-1.9.22.tgz",
+      "integrity": "sha512-h3lhECYEKDasG7LFHu+GiHqAvsgLuQvlJvVZzJDGONo3sEL+wUOqSFLnwkZlK0qVxnxbuGFW8iBlJNYs5wgndA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/geojson": "*"
+      }
+    },
     "node_modules/@types/node": {
       "version": "20.19.43",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.43.tgz",
@@ -8325,6 +8356,12 @@
         "node": ">=0.10"
       }
     },
+    "node_modules/leaflet": {
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/leaflet/-/leaflet-1.9.4.tgz",
+      "integrity": "sha512-nxS1ynzJOmOlHp+iL3FyWqK89GtNL8U8rvlMOsQdTTssxZwCXh8N2NB3GDQOL+YR3XnWyZAxwQixURb+FA74PA==",
+      "license": "BSD-2-Clause"
+    },
     "node_modules/levn": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/levn/-/levn-0.4.1.tgz",
@@ -9940,6 +9977,20 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/react-leaflet": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/react-leaflet/-/react-leaflet-5.0.0.tgz",
+      "integrity": "sha512-CWbTpr5vcHw5bt9i4zSlPEVQdTVcML390TjeDG0cK59z1ylexpqC6M1PJFjV8jD7CF+ACBFsLIDs6DRMoLEofw==",
+      "license": "Hippocratic-2.1",
+      "dependencies": {
+        "@react-leaflet/core": "^3.0.0"
+      },
+      "peerDependencies": {
+        "leaflet": "^1.9.0",
+        "react": "^19.0.0",
+        "react-dom": "^19.0.0"
+      }
+    },
     "node_modules/react-refresh": {
       "version": "0.17.0",
       "resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.17.0.tgz",