feat(03-01): pagina SwipeFile UI + TanStack hooks + navigazione

- frontend/src/types.ts: aggiunge SwipeItem, SwipeItemCreate, SwipeItemUpdate, SwipeListResponse
- frontend/src/api/hooks.ts: aggiunge useSwipeItems, useAddSwipeItem, useUpdateSwipeItem, useDeleteSwipeItem
- frontend/src/pages/SwipeFile.tsx: pagina completa con form aggiunta, filtro nicchia, modifica inline, eliminazione con dialog conferma, data relativa
- frontend/src/components/Sidebar.tsx: aggiunge voce "Swipe File" con icona Lightbulb
- frontend/src/App.tsx: registra route /swipe-file
- TypeScript + build Vite: nessun errore

frontend/src/api/hooks.ts

@@ -10,7 +10,7 @@
  */
 
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
-import { apiDownload, apiGet, apiPost, apiPut, triggerDownload } from './client'
+import { apiFetch, apiDownload, apiGet, apiPost, apiPut, triggerDownload } from './client'
 import type {
   CalendarRequest,
   CalendarResponse,
@@ -23,6 +23,10 @@ import type {
   PromptListResponse,
   Settings,
   SettingsStatus,
+  SwipeItem,
+  SwipeItemCreate,
+  SwipeItemUpdate,
+  SwipeListResponse,
 } from '../types'
 
 // ---------------------------------------------------------------------------
@@ -234,3 +238,49 @@ export function useResetPrompt() {
     },
   })
 }
+
+// ---------------------------------------------------------------------------
+// Swipe File
+// ---------------------------------------------------------------------------
+
+/** Lista tutte le idee salvate nello Swipe File (ordine: piu' recenti prima). */
+export function useSwipeItems() {
+  return useQuery<SwipeListResponse>({
+    queryKey: ['swipe'],
+    queryFn: () => apiGet<SwipeListResponse>('/swipe/'),
+    staleTime: 30_000,
+  })
+}
+
+/** Aggiunge una nuova idea allo Swipe File. */
+export function useAddSwipeItem() {
+  const queryClient = useQueryClient()
+  return useMutation<SwipeItem, Error, SwipeItemCreate>({
+    mutationFn: (item) => apiPost<SwipeItem>('/swipe/', item),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['swipe'] })
+    },
+  })
+}
+
+/** Aggiorna una voce esistente dello Swipe File. */
+export function useUpdateSwipeItem() {
+  const queryClient = useQueryClient()
+  return useMutation<SwipeItem, Error, { id: string; data: SwipeItemUpdate }>({
+    mutationFn: ({ id, data }) => apiPut<SwipeItem>(`/swipe/${id}`, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['swipe'] })
+    },
+  })
+}
+
+/** Elimina una voce dallo Swipe File. */
+export function useDeleteSwipeItem() {
+  const queryClient = useQueryClient()
+  return useMutation<{ deleted: boolean }, Error, string>({
+    mutationFn: (id) => apiFetch<{ deleted: boolean }>(`/swipe/${id}`, { method: 'DELETE' }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['swipe'] })
+    },
+  })
+}