feat: manage fruits — full CRUD with images and synonyms (story #02)

Backend: domain structs, FruitRepository interface + pg implementation,
9 Echo v4 handlers (list/get/create/update/delete, image sub-resources),
migration 000002 (fruit_type ENUM, fruits, fruit_synonyms, fruit_images),
route-scoped BodyLimit("5M") for uploads, http.DetectContentType for serving.

Frontend: typed fetch API layer, Pinia setup-style fruitStore, FruitList
(paginated), FruitCreate, and FruitDetail (edit + synonyms editor + image
gallery). 25 backend unit tests + integration test; 18 frontend tests.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/views/FruitDetail.vue

@@ -0,0 +1,266 @@
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { useRouter } from 'vue-router'
+import { useFruitStore } from '../stores/fruitStore'
+import { addImage, deleteImage, FRUIT_TYPES } from '../api/fruits'
+import type { Fruit } from '../api/fruits'
+
+const props = defineProps<{ id: string }>()
+const router = useRouter()
+const store = useFruitStore()
+
+const editing = ref(false)
+const editName = ref('')
+const editOsdbNumber = ref('')
+const editComment = ref('')
+const editFruitType = ref('')
+const editSynonyms = ref<string[]>([])
+const synonymInput = ref('')
+const saving = ref(false)
+const deleting = ref(false)
+const serverError = ref<string | null>(null)
+
+const imageFile = ref<File | null>(null)
+const imageType = ref('fruit')
+const imageTitle = ref('')
+const uploading = ref(false)
+const uploadError = ref<string | null>(null)
+
+onMounted(async () => {
+  await store.fetchFruit(Number(props.id))
+  if (store.current) startEdit(store.current)
+})
+
+function startEdit(f: Fruit) {
+  editName.value = f.name
+  editOsdbNumber.value = f.osdb_number
+  editComment.value = f.comment ?? ''
+  editFruitType.value = f.fruit_type
+  editSynonyms.value = [...f.synonyms]
+}
+
+function addSynonym() {
+  const s = synonymInput.value.trim()
+  if (s && !editSynonyms.value.includes(s)) editSynonyms.value.push(s)
+  synonymInput.value = ''
+}
+
+function removeSynonym(idx: number) {
+  editSynonyms.value.splice(idx, 1)
+}
+
+async function save() {
+  if (!store.current) return
+  serverError.value = null
+  saving.value = true
+  try {
+    const updated = await store.update(Number(props.id), {
+      name: editName.value,
+      osdb_number: editOsdbNumber.value,
+      comment: editComment.value || null,
+      fruit_type: editFruitType.value,
+      synonyms: editSynonyms.value,
+    })
+    startEdit(updated)
+    editing.value = false
+  } catch (e) {
+    serverError.value = e instanceof Error ? e.message : 'Fehler beim Speichern'
+  } finally {
+    saving.value = false
+  }
+}
+
+async function remove() {
+  if (!confirm('Frucht wirklich löschen?')) return
+  deleting.value = true
+  try {
+    await store.remove(Number(props.id))
+    router.push('/fruits')
+  } catch (e) {
+    serverError.value = e instanceof Error ? e.message : 'Fehler beim Löschen'
+    deleting.value = false
+  }
+}
+
+function onFileChange(e: Event) {
+  const input = e.target as HTMLInputElement
+  imageFile.value = input.files?.[0] ?? null
+}
+
+async function uploadImage() {
+  if (!imageFile.value) return
+  uploadError.value = null
+  uploading.value = true
+  try {
+    await addImage(Number(props.id), imageFile.value, imageType.value, imageTitle.value || undefined)
+    imageFile.value = null
+    imageTitle.value = ''
+    await store.fetchFruit(Number(props.id))
+  } catch (e) {
+    uploadError.value = e instanceof Error ? e.message : 'Upload fehlgeschlagen'
+  } finally {
+    uploading.value = false
+  }
+}
+
+async function removeImage(imageId: number) {
+  if (!confirm('Bild wirklich löschen?')) return
+  try {
+    await deleteImage(Number(props.id), imageId)
+    await store.fetchFruit(Number(props.id))
+  } catch (e) {
+    serverError.value = e instanceof Error ? e.message : 'Fehler beim Löschen des Bildes'
+  }
+}
+</script>
+
+<template>
+  <div class="p-6 max-w-3xl mx-auto">
+    <div v-if="store.loading" class="text-gray-500">Wird geladen...</div>
+    <div v-else-if="store.error" class="text-red-600">{{ store.error }}</div>
+    <div v-else-if="!store.current" class="text-gray-400">Frucht nicht gefunden.</div>
+    <div v-else>
+      <div class="flex items-start justify-between mb-6">
+        <h1 class="text-2xl font-bold text-gray-900">{{ store.current.name }}</h1>
+        <div class="flex gap-2">
+          <button
+            v-if="!editing"
+            @click="editing = true"
+            class="bg-blue-600 text-white px-4 py-2 rounded hover:bg-blue-700 transition-colors text-sm"
+          >
+            Bearbeiten
+          </button>
+          <button
+            @click="remove"
+            :disabled="deleting"
+            class="bg-red-600 text-white px-4 py-2 rounded hover:bg-red-700 disabled:opacity-50 transition-colors text-sm"
+          >
+            Löschen
+          </button>
+        </div>
+      </div>
+
+      <div v-if="serverError" class="mb-4 p-3 bg-red-50 border border-red-300 rounded text-red-700 text-sm">
+        {{ serverError }}
+      </div>
+
+      <!-- View / Edit form -->
+      <div class="space-y-4">
+        <div v-if="!editing" class="grid grid-cols-2 gap-4 text-sm">
+          <div>
+            <span class="font-medium text-gray-700">OSDB-Kürzel:</span>
+            <span class="ml-2 text-gray-900">{{ store.current.osdb_number }}</span>
+          </div>
+          <div>
+            <span class="font-medium text-gray-700">Typ:</span>
+            <span class="ml-2 text-gray-900">{{ store.current.fruit_type }}</span>
+          </div>
+          <div v-if="store.current.comment" class="col-span-2">
+            <span class="font-medium text-gray-700">Kommentar:</span>
+            <span class="ml-2 text-gray-900">{{ store.current.comment }}</span>
+          </div>
+          <div class="col-span-2">
+            <span class="font-medium text-gray-700">Synonyme:</span>
+            <span v-if="store.current.synonyms.length === 0" class="ml-2 text-gray-400">keine</span>
+            <span v-else class="ml-2 text-gray-900">{{ store.current.synonyms.join(', ') }}</span>
+          </div>
+        </div>
+
+        <form v-else @submit.prevent="save" class="space-y-4">
+          <div>
+            <label class="block text-sm font-medium text-gray-700 mb-1">Name *</label>
+            <input v-model="editName" type="text" required class="w-full border border-gray-300 rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-green-500" />
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-gray-700 mb-1">OSDB-Kürzel *</label>
+            <input v-model="editOsdbNumber" type="text" required class="w-full border border-gray-300 rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-green-500" />
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-gray-700 mb-1">Typ *</label>
+            <select v-model="editFruitType" required class="w-full border border-gray-300 rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-green-500">
+              <option v-for="t in FRUIT_TYPES" :key="t" :value="t">{{ t }}</option>
+            </select>
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-gray-700 mb-1">Kommentar</label>
+            <textarea v-model="editComment" rows="3" class="w-full border border-gray-300 rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-green-500" />
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-gray-700 mb-1">Synonyme</label>
+            <div class="flex gap-2 mb-2">
+              <input v-model="synonymInput" type="text" @keydown.enter.prevent="addSynonym" placeholder="Synonym hinzufügen" class="flex-1 border border-gray-300 rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-green-500" />
+              <button type="button" @click="addSynonym" class="bg-gray-200 px-3 py-2 rounded hover:bg-gray-300">+</button>
+            </div>
+            <ul class="space-y-1">
+              <li v-for="(s, i) in editSynonyms" :key="i" class="flex items-center gap-2 text-sm">
+                <span class="flex-1 bg-gray-100 rounded px-2 py-1">{{ s }}</span>
+                <button type="button" @click="removeSynonym(i)" class="text-red-500 hover:text-red-700 text-xs">✕</button>
+              </li>
+            </ul>
+          </div>
+          <div class="flex gap-3">
+            <button type="submit" :disabled="saving" class="bg-green-600 text-white px-6 py-2 rounded hover:bg-green-700 disabled:opacity-50 transition-colors">
+              {{ saving ? 'Speichern...' : 'Speichern' }}
+            </button>
+            <button type="button" @click="editing = false" class="px-6 py-2 border rounded hover:bg-gray-50 transition-colors">
+              Abbrechen
+            </button>
+          </div>
+        </form>
+      </div>
+
+      <!-- Image gallery -->
+      <div class="mt-8">
+        <h2 class="text-lg font-semibold text-gray-800 mb-4">Bilder</h2>
+
+        <div v-if="store.current.images.length === 0" class="text-gray-400 text-sm mb-4">Keine Bilder vorhanden.</div>
+        <div v-else class="grid grid-cols-2 md:grid-cols-3 gap-4 mb-6">
+          <div v-for="img in store.current.images" :key="img.id" class="relative group border rounded overflow-hidden">
+            <img :src="img.url" :alt="img.title ?? img.image_type" class="w-full h-32 object-cover" />
+            <div class="absolute top-1 right-1 opacity-0 group-hover:opacity-100 transition-opacity">
+              <button
+                @click="removeImage(img.id)"
+                class="bg-red-600 text-white rounded-full w-6 h-6 text-xs flex items-center justify-center hover:bg-red-700"
+              >
+                ✕
+              </button>
+            </div>
+            <div class="p-1 text-xs text-gray-500">{{ img.image_type }}{{ img.title ? ' · ' + img.title : '' }}</div>
+          </div>
+        </div>
+
+        <!-- Upload form -->
+        <div class="border rounded p-4 bg-gray-50">
+          <h3 class="text-sm font-medium text-gray-700 mb-3">Bild hochladen</h3>
+          <div v-if="uploadError" class="mb-3 text-red-600 text-sm">{{ uploadError }}</div>
+          <div class="space-y-3">
+            <input type="file" accept="image/*" @change="onFileChange" class="block w-full text-sm text-gray-600" />
+            <div>
+              <label class="block text-xs font-medium text-gray-700 mb-1">Bildtyp *</label>
+              <select v-model="imageType" class="border border-gray-300 rounded px-3 py-1.5 text-sm focus:outline-none focus:ring-2 focus:ring-green-500">
+                <option value="fruit">Frucht</option>
+                <option value="flower">Blüte</option>
+                <option value="tree">Baum</option>
+              </select>
+            </div>
+            <div>
+              <label class="block text-xs font-medium text-gray-700 mb-1">Titel (optional)</label>
+              <input v-model="imageTitle" type="text" class="border border-gray-300 rounded px-3 py-1.5 text-sm w-full focus:outline-none focus:ring-2 focus:ring-green-500" />
+            </div>
+            <button
+              @click="uploadImage"
+              :disabled="!imageFile || uploading"
+              class="bg-green-600 text-white px-4 py-2 rounded text-sm hover:bg-green-700 disabled:opacity-50 transition-colors"
+            >
+              {{ uploading ? 'Hochladen...' : 'Hochladen' }}
+            </button>
+          </div>
+        </div>
+      </div>
+
+      <div class="mt-6">
+        <RouterLink to="/fruits" class="text-green-700 hover:underline text-sm">← Zurück zur Liste</RouterLink>
+      </div>
+    </div>
+  </div>
+</template>