feat(podcasts): standard ReactionsRow for the show between header and episodes

Give the podcast show itself the usual engagement affordance: the standard
NoteCompose ReactionsRow (comment / zap / react, with counts) now sits
between the show header and the episode list on the detail screen, bracketed
by the usual dividers like any other content detail. Acts on the resolved
show note and only renders once that event loads.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JGa1EM5KWyDo1o5Yr6sS18

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/podcasts/PodcastHeader.kt

@@ -44,6 +44,7 @@ import com.vitorpamplona.amethyst.commons.model.toImmutableListOfLists
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.ui.components.TranslatableRichTextViewer
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.note.ReactionsRow
 import com.vitorpamplona.amethyst.ui.note.types.PodcastCoverCard
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.theme.DividerThickness
@@ -137,9 +138,26 @@ fun PodcastHeader(
             }
         }
 
+        // Standard engagement row for the show itself (comment / zap / react), like any other
+        // content detail. Only shown once the show event resolves so it acts on a real note.
+        if (show != null) {
+            HorizontalDivider(thickness = DividerThickness)
+
+            ReactionsRow(
+                baseNote = metadataNote,
+                showReactionDetail = true,
+                addPadding = true,
+                editState = null,
+                accountViewModel = accountViewModel,
+                nav = nav,
+            )
+        }
+
         // Only render once episodes have actually loaded — avoids flashing "0 episodes"
         // under the cover while the relay request is still in flight.
         episodeCount?.let { count ->
+            HorizontalDivider(thickness = DividerThickness)
+
             Text(
                 text = pluralStringResource(R.plurals.podcast_episode_count, count, count),
                 style = MaterialTheme.typography.titleMedium,