feat: extract shop from mp/shop — initial libreshop/shop

Source moved verbatim from mp/shop/ on 2026-04-29; mp was the first
concrete adapter consuming the libreshop toolkit. Builds and publishes
git.librete.ch/libreshop/shop on every main / v* push via the standard
.gitea/workflows/build.yml shared across libreshop components.

components/LocationMap.vue

@@ -0,0 +1,59 @@
+<template>
+	<div class="space-y-6">
+		<!-- Address -->
+		<div v-if="showAddress" class="flex items-start gap-3">
+			<IconMapPin class="w-6 h-6 mt-1 text-gray-600 flex-shrink-0" />
+			<div>
+				<p class="font-semibold text-lg">{{ address.name }}</p>
+				<p>{{ address.street }}</p>
+				<p>{{ address.postalCode }} {{ address.city }}</p>
+			</div>
+		</div>
+
+		<!-- OpenStreetMap Embed -->
+		<div class="relative w-full aspect-video rounded-xl overflow-hidden shadow-lg">
+			<iframe
+				:src="mapUrl"
+				width="100%"
+				height="100%"
+				style="border: 0"
+				allowfullscreen=""
+				loading="lazy"
+				class="absolute inset-0"
+			></iframe>
+		</div>
+
+		<!-- Directions Link -->
+		<a :href="directionsUrl" target="_blank" rel="noopener noreferrer" class="inline-flex items-center gap-2 text-gray-900 font-medium hover:underline">
+			<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+				<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z" />
+				<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 11a3 3 0 11-6 0 3 3 0 016 0z" />
+			</svg>
+			Route planen
+		</a>
+	</div>
+</template>
+
+<script setup lang="ts">
+import IconMapPin from "~/components/icons/IconMapPin.vue";
+
+const props = defineProps<{
+	address: {
+		name: string;
+		street: string;
+		postalCode: string;
+		city: string;
+	};
+	showAddress?: boolean;
+}>();
+
+// OpenStreetMap embed — hardcoded coordinates for Rotenbergstraße 39, 70190 Stuttgart
+const lat = 48.7862;
+const lon = 9.2;
+const bbox = `${lon - 0.005},${lat - 0.0025},${lon + 0.005},${lat + 0.0025}`;
+
+const mapUrl = `https://www.openstreetmap.org/export/embed.html?bbox=${bbox}&layer=mapnik&marker=${lat},${lon}`;
+
+const encodedAddress = computed(() => encodeURIComponent(`${props.address.street}, ${props.address.postalCode} ${props.address.city}`));
+const directionsUrl = computed(() => `https://www.openstreetmap.org/directions?to=${lat},${lon}#map=16/${lat}/${lon}`);
+</script>