feat: area admin con editor tiptap, api crud e upload immagini

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/pages/api/admin/posts/[id].ts

@@ -0,0 +1,29 @@
+import type { APIRoute } from 'astro';
+import { getDb } from '../../../../lib/db';
+import { getPostById, updatePost, deletePost } from '../../../../lib/posts';
+import { parsePostBody } from '../../../../lib/post-body';
+export const prerender = false;
+
+const json = (status: number, body: object) =>
+  new Response(JSON.stringify(body), { status, headers: { 'Content-Type': 'application/json' } });
+
+export const PUT: APIRoute = async ({ params, request }) => {
+  const id = Number(params.id);
+  if (!getPostById(getDb(), id)) return json(404, { error: 'Articolo non trovato.' });
+  let data: Record<string, unknown>;
+  try { data = await request.json(); } catch { return json(400, { error: 'Dati non validi.' }); }
+  const parsed = parsePostBody(data);
+  if ('error' in parsed) return json(400, { error: parsed.error });
+  try {
+    updatePost(getDb(), id, parsed.value);
+    return json(200, { ok: true });
+  } catch (err: any) {
+    if (String(err?.message).includes('UNIQUE')) return json(400, { error: 'Slug già esistente.' });
+    throw err;
+  }
+};
+
+export const DELETE: APIRoute = ({ params }) => {
+  deletePost(getDb(), Number(params.id));
+  return json(200, { ok: true });
+};