Articoli: cestino con ripristino, e azioni a icona come in Utenti

Eliminare un articolo non lasciava nulla di recuperabile: ora la riga
finisce nel cestino (colonna deleted_at, aggiunta anche ai database già
esistenti) e sparisce da sito e pannello, ma resta ripristinabile dalla
nuova pagina /admin/cestino, dove sta anche la cancellazione definitiva.
L'API la accetta solo su articoli già cestinati, così il contenuto non si
perde per un clic distratto.

Ogni lettura pubblica — elenco, recenti, archivio per mese, pagina del
singolo articolo — filtra il cestino, e chi non gestisce vede nel cestino
soltanto i propri articoli.

Le azioni di riga diventano icone (matita e cestino) come nell'elenco
utenti, con etichetta accessibile che nomina l'articolo.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/lib/posts.ts

@@ -4,6 +4,8 @@ export interface Post {
   id: number; title: string; slug: string; category: string; excerpt: string;
   body_html: string; cover: string | null; draft: number; author_id: number | null;
   published_at: string | null; created_at: string; updated_at: string;
+  /** Momento in cui è finito nel cestino; null se attivo. */
+  deleted_at: string | null;
 }
 
 export interface PostInput {
@@ -30,6 +32,16 @@ export function updatePost(db: Database.Database, id: number, input: PostInput):
   ).run({ ...input, id, cover: input.cover ?? null, draft: input.draft ? 1 : 0 });
 }
 
+/** Sposta nel cestino: l'articolo sparisce dal sito e dall'elenco, ma resta recuperabile. */
+export function trashPost(db: Database.Database, id: number): void {
+  db.prepare("UPDATE posts SET deleted_at = datetime('now') WHERE id = ?").run(id);
+}
+
+export function restorePost(db: Database.Database, id: number): void {
+  db.prepare('UPDATE posts SET deleted_at = NULL WHERE id = ?').run(id);
+}
+
+/** Cancellazione definitiva: si usa solo dal cestino. */
 export function deletePost(db: Database.Database, id: number): void {
   db.prepare('DELETE FROM posts WHERE id = ?').run(id);
 }
@@ -39,7 +51,7 @@ export function getPostById(db: Database.Database, id: number): Post | undefined
 }
 
 export function getPublishedBySlug(db: Database.Database, slug: string): Post | undefined {
-  return db.prepare('SELECT * FROM posts WHERE slug = ? AND draft = 0').get(slug) as Post | undefined;
+  return db.prepare('SELECT * FROM posts WHERE slug = ? AND draft = 0 AND deleted_at IS NULL').get(slug) as Post | undefined;
 }
 
 export function listPublished(
@@ -47,7 +59,8 @@ export function listPublished(
   opts: { category?: string; page?: number; perPage?: number } = {},
 ): { items: Post[]; total: number } {
   const { category, page = 1, perPage = 9 } = opts;
-  const where = category ? 'WHERE draft = 0 AND category = @category' : 'WHERE draft = 0';
+  const base = 'WHERE draft = 0 AND deleted_at IS NULL';
+  const where = category ? `${base} AND category = @category` : base;
   const total = (db.prepare(`SELECT COUNT(*) AS n FROM posts ${where}`)
     .get({ category }) as { n: number }).n;
   const items = db.prepare(
@@ -57,24 +70,33 @@ export function listPublished(
 }
 
 export function listAllPosts(db: Database.Database): Post[] {
-  return db.prepare('SELECT * FROM posts ORDER BY updated_at DESC').all() as Post[];
+  return db.prepare('SELECT * FROM posts WHERE deleted_at IS NULL ORDER BY updated_at DESC').all() as Post[];
+}
+
+/** Articoli nel cestino: tutti per chi gestisce, i propri per gli altri. */
+export function listTrashed(db: Database.Database, authorId?: number): Post[] {
+  return authorId === undefined
+    ? db.prepare('SELECT * FROM posts WHERE deleted_at IS NOT NULL ORDER BY deleted_at DESC').all() as Post[]
+    : db.prepare('SELECT * FROM posts WHERE deleted_at IS NOT NULL AND author_id = ? ORDER BY deleted_at DESC')
+        .all(authorId) as Post[];
 }
 
 export function listRecent(db: Database.Database, limit = 4): Post[] {
   return db.prepare(
-    'SELECT * FROM posts WHERE draft = 0 ORDER BY published_at DESC LIMIT ?'
+    'SELECT * FROM posts WHERE draft = 0 AND deleted_at IS NULL ORDER BY published_at DESC LIMIT ?'
   ).all(limit) as Post[];
 }
 
 export function listArchiveMonths(db: Database.Database): { month: string; count: number }[] {
   return db.prepare(
     `SELECT strftime('%Y-%m', published_at) AS month, COUNT(*) AS count
-     FROM posts WHERE draft = 0 GROUP BY month ORDER BY month DESC`
+     FROM posts WHERE draft = 0 AND deleted_at IS NULL GROUP BY month ORDER BY month DESC`
   ).all() as { month: string; count: number }[];
 }
 
 export function listByAuthor(db: Database.Database, authorId: number): Post[] {
-  return db.prepare('SELECT * FROM posts WHERE author_id = ? ORDER BY updated_at DESC').all(authorId) as Post[];
+  return db.prepare('SELECT * FROM posts WHERE author_id = ? AND deleted_at IS NULL ORDER BY updated_at DESC')
+    .all(authorId) as Post[];
 }
 
 export function canModifyPost(role: string, userId: number, post: { author_id: number | null }): boolean {