feat: fruit search by name/synonym and type filter (story #06)

Backend: List repo query gains name (ILIKE with wildcard escaping on
name + synonym LEFT JOIN, SELECT DISTINCT) and types (ANY cast) params;
handler parses ?name= and ?type=, resolves combined-type aliases from
domain.FruitTypeAliases, validates plain types against validFruitTypes
to prevent Postgres enum cast errors. ORDER BY f.name, f.id for stable
pagination.

Frontend: listFruits gains optional {name, type} params; fruitStore adds
searchName/searchType state and setSearch action (resets offset, refetches);
FruitList.vue wires text input (debounced 300 ms + Enter) and flat type
dropdown (17 enum values + 4 aliases per spec §5 order); debounce timer
cleared on unmount.

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

frontend/src/stores/fruitStore.test.ts

@@ -115,4 +115,15 @@ describe('fruitStore', () => {
     expect(store.fruits.find((f) => f.id === 1)).toBeUndefined()
     expect(store.total).toBe(1)
   })
+
+  it('setSearch updates search state and resets offset', async () => {
+    const store = useFruitStore()
+    await store.fetchFruits()
+    store.offset = 50
+    await store.setSearch('Boskop', 'Apfelsorten')
+    expect(store.searchName).toBe('Boskop')
+    expect(store.searchType).toBe('Apfelsorten')
+    expect(store.offset).toBe(0)
+    expect(fetchMock).toHaveBeenLastCalledWith(expect.stringContaining('name=Boskop'))
+  })
 })

frontend/src/stores/fruitStore.ts

@@ -18,12 +18,19 @@ export const useFruitStore = defineStore('fruit', () => {
   const current = ref<Fruit | null>(null)
   const loading = ref(false)
   const error = ref<string | null>(null)
+  const searchName = ref('')
+  const searchType = ref('')
 
   async function fetchFruits(lim = limit.value, off = offset.value) {
     loading.value = true
     error.value = null
     try {
-      const resp = await listFruits(lim, off)
+      const resp = await listFruits({
+        limit: lim,
+        offset: off,
+        name: searchName.value || undefined,
+        type: searchType.value || undefined,
+      })
       fruits.value = resp.items
       total.value = resp.total
       limit.value = resp.limit
@@ -35,6 +42,13 @@ export const useFruitStore = defineStore('fruit', () => {
     }
   }
 
+  async function setSearch(name: string, type: string) {
+    searchName.value = name
+    searchType.value = type
+    offset.value = 0
+    await fetchFruits(limit.value, 0)
+  }
+
   async function fetchFruit(id: number) {
     loading.value = true
     error.value = null
@@ -71,5 +85,5 @@ export const useFruitStore = defineStore('fruit', () => {
     if (current.value?.id === id) current.value = null
   }
 
-  return { fruits, total, limit, offset, current, loading, error, fetchFruits, fetchFruit, create, update, remove }
+  return { fruits, total, limit, offset, current, loading, error, searchName, searchType, fetchFruits, fetchFruit, create, update, remove, setSearch }
 })