fix(podcasts): serialize explicit as a real boolean in API responses

SQLite has no boolean type, so raw rows return explicit as 0/1. The
podcast edit form round-trips whatever GET /api/podcasts/:id sends it,
and the update schema requires z.boolean() — so saving any change
without also touching the explicit checkbox failed validation with
"Expected boolean, received number".

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

server/src/app.test.ts

@@ -171,6 +171,23 @@ describe('podcasts, episodes, feed', () => {
     expect(res.statusCode).toBe(201);
     podcastId = res.json().id;
     expect(res.json().podcast_guid).toMatch(/^[0-9a-f-]{36}$/);
+    expect(res.json().explicit).toBe(false); // not the raw SQLite 0/1
+  });
+
+  it('lets the edit form round-trip a fetched podcast unmodified (regression: explicit came back as 0/1, not a bool)', async () => {
+    const fetched = await app.inject({ method: 'GET', url: `/api/podcasts/${podcastId}`, headers: { cookie } });
+    expect(fetched.json().explicit).toBe(false);
+
+    const { episodes: _episodes, feed_url: _feedUrl, ...editForm } = fetched.json();
+    const res = await app.inject({
+      method: 'PUT',
+      url: `/api/podcasts/${podcastId}`,
+      headers: { cookie },
+      payload: editForm,
+    });
+    expect(res.statusCode).toBe(200);
+    expect(res.json().lightning_address).toBe('tester@getalby.com');
+    expect(res.json().explicit).toBe(false);
   });
 
   it('registers an episode after verifying the blob on blossom', async () => {

server/src/routes/podcasts.ts

@@ -51,10 +51,18 @@ export default async function podcastRoutes(app: FastifyInstance) {
     return p && p.owner_pubkey === pubkey ? p : null;
   }
 
+  // SQLite has no boolean type — `explicit` comes back as a raw 0/1 integer.
+  // The client's edit form round-trips whatever this endpoint sends it, and the
+  // update schema requires a real boolean, so this needs to be a true boolean
+  // on the wire or re-submitting an untouched form fails validation.
+  function serializePodcast(p: Podcast): Omit<Podcast, 'explicit'> & { explicit: boolean } {
+    return { ...p, explicit: !!p.explicit };
+  }
+
   app.get('/api/podcasts', { preHandler: app.requireAuth }, async (req) => {
     const podcasts = listPodcasts.all(req.userPubkey) as Podcast[];
     return podcasts.map((p) => ({
-      ...p,
+      ...serializePodcast(p),
       feed_url: `${settings.all().public_url}/feeds/${p.id}/feed.xml`,
     }));
   });
@@ -75,7 +83,7 @@ export default async function podcastRoutes(app: FastifyInstance) {
       d.category, d.explicit ? 1 : 0, d.lightning_address ?? null, d.keysend_node ?? null,
       d.value_suggested ?? null, podcastGuidForFeedUrl(feedUrl), nowSecs(), nowSecs(),
     );
-    return reply.code(201).send({ ...(getPodcast.get(id) as Podcast), feed_url: feedUrl });
+    return reply.code(201).send({ ...serializePodcast(getPodcast.get(id) as Podcast), feed_url: feedUrl });
   });
 
   app.get('/api/podcasts/:id', { preHandler: app.requireAuth }, async (req, reply) => {
@@ -83,7 +91,7 @@ export default async function podcastRoutes(app: FastifyInstance) {
     const p = ownedPodcast(id, req.userPubkey!);
     if (!p) return reply.code(404).send({ error: 'podcast not found' });
     return {
-      ...p,
+      ...serializePodcast(p),
       feed_url: `${settings.all().public_url}/feeds/${p.id}/feed.xml`,
       episodes: listEpisodes.all(id) as Episode[],
     };
@@ -106,7 +114,7 @@ export default async function podcastRoutes(app: FastifyInstance) {
       d.lightning_address ?? null, d.keysend_node ?? null, d.value_suggested ?? null,
       d.resale_producer_share_pct, nowSecs(), id,
     );
-    return getPodcast.get(id) as Podcast;
+    return serializePodcast(getPodcast.get(id) as Podcast);
   });
 
   app.delete('/api/podcasts/:id', { preHandler: app.requireAuth }, async (req, reply) => {