feat(fc2c-i): showcase view with shortest-column masonry

frontend/src/views/ShowcaseView.vue

@@ -0,0 +1,54 @@
+<template>
+  <v-container fluid class="py-6">
+    <div class="fc-showcase__head">
+      <h1 class="fc-h1">Showcase</h1>
+      <v-btn
+        prepend-icon="mdi-shuffle-variant" variant="tonal" color="accent"
+        :loading="store.loading" @click="store.shuffle()"
+      >Shuffle</v-btn>
+    </div>
+
+    <v-alert v-if="store.error" type="error" variant="tonal" closable class="my-4">
+      Failed to load: {{ store.error }}
+    </v-alert>
+    <v-alert v-else-if="store.isEmpty" type="info" variant="tonal" class="my-4">
+      No images yet.
+    </v-alert>
+
+    <MasonryGrid
+      :items="store.images"
+      :loading="store.loading"
+      :has-more="store.hasMore"
+      @load-more="store.fetchPage()"
+      @open="openImage"
+    />
+  </v-container>
+</template>
+
+<script setup>
+import { onMounted } from 'vue'
+import { useRouter } from 'vue-router'
+import { useShowcaseStore } from '../stores/showcase.js'
+import MasonryGrid from '../components/discovery/MasonryGrid.vue'
+
+const store = useShowcaseStore()
+const router = useRouter()
+
+onMounted(() => { if (store.images.length === 0) store.fetchPage() })
+
+function openImage(id) {
+  router.push({ name: 'gallery', query: { image: id } })
+}
+</script>
+
+<style scoped>
+.fc-h1 {
+  font-family: 'Fraunces', Georgia, serif;
+  font-size: 32px; font-weight: 500;
+  color: rgb(var(--v-theme-on-surface));
+}
+.fc-showcase__head {
+  display: flex; align-items: center; justify-content: space-between;
+  margin-bottom: 16px;
+}
+</style>