fix(podcasts): page search hits episode titles/descriptions (issue #8)

WHY: the /podcasts search box filtered feed CARDS only (title, display
name, host, publisher, feed description). D14's episode search existed
only as the /api/podcasts/search endpoint and was never wired into the
page — searching 'Quarter' (present only in episode titles) cleared the
grid while 'Trader' (feed metadata) survived.

The page query now consults SearchMyPodcastEpisodes (subscription-scoped
via RLS — the caller's identity) when a query is present; a feed
surfaces when its OWN metadata OR any of its episodes matches, with an
'N matching episode(s)' badge on the card.

PIN: SSR test with a needle that exists only in an episode title — the
feed must surface with the match count.

cmd/server/tests/podcast_test.go

@@ -697,3 +697,36 @@ func TestPodcastOrderFormEncoding(t *testing.T) {
 	assert.Equal(t, http.StatusBadRequest, formPut(""), "missing order stays rejected (required)")
 	assert.Equal(t, http.StatusBadRequest, formPut("order=sideways"), "invalid order stays rejected")
 }
+
+// ---- issue #8: page search hits EPISODE titles/descriptions too ----
+
+func TestPodcastPageSearchEpisodes(t *testing.T) {
+	setup := setupTestServer(t)
+	lib, _ := createPodcastsLibrary(t, setup, "test PageSearch Podcasts")
+	// Feed title deliberately does NOT contain the needle.
+	feed, err := setup.DB.CreatePodcastFeed(adminSeedCtx(t, setup), database.CreatePodcastFeedParams{
+		LibraryID: lib.ID,
+		FeedUrl:   "https://feed.invalid/page-search.xml",
+		Title:     "Trader Tales Show",
+	})
+	require.NoError(t, err)
+	upsertTestEpisode(t, setup, feed, "ps-1", "Zarkorrin Blaster", 1)
+
+	subscribeRaw(t, setup, getRegularUserID(t, setup.DB), feed.ID)
+
+	// SSR page search: the needle exists only in an EPISODE title.
+	req, _ := http.NewRequest(http.MethodGet, setup.Server.URL+"/podcasts?q=Zarkorrin", nil)
+	req.Header.Set("Authorization", "Bearer "+setup.RegularToken)
+	resp, err := http.DefaultClient.Do(req)
+	require.NoError(t, err)
+	defer func() { _ = resp.Body.Close() }()
+	require.Equal(t, http.StatusOK, resp.StatusCode)
+	var buf bytes.Buffer
+	_, _ = buf.ReadFrom(resp.Body)
+	body := buf.String()
+
+	assert.Contains(t, body, "Trader Tales Show",
+		"PIN: a feed surfaces when an EPISODE matches the query, even when the feed's own metadata does not")
+	assert.Contains(t, body, "matching episode",
+		"the match count renders on the card")
+}