Show live and recording counts on /channels

apps/web/src/app/channels/page.tsx

@@ -21,6 +21,8 @@ interface ChannelDir {
   banner_url: string | null;
   subscriber_count: number;
   is_live: boolean;
+  live_count: number;
+  recording_count: number;
 }
 
 async function getChannels(): Promise<ChannelDir[]> {
@@ -120,6 +122,14 @@ export default async function ChannelsPage() {
                         <p className="text-xs text-gray-500">
                           {c.subscriber_count}{' '}
                           {c.subscriber_count === 1 ? 'subscriber' : 'subscribers'}
+                          {' · '}
+                          {c.live_count > 0 ? (
+                            <span className="font-medium text-red-600">{c.live_count} live</span>
+                          ) : (
+                            '0 live'
+                          )}
+                          {' · '}
+                          {c.recording_count} {c.recording_count === 1 ? 'recording' : 'recordings'}
                         </p>
                       </div>
                     </div>

supabase/migrations/20260922120000_channel_directory_counts.sql

@@ -0,0 +1,38 @@
+-- /channels shows each channel's subscriber count and a pulsing dot when it is
+-- live, but nothing about how much is actually on the channel. Add two counts
+-- to the directory RPC so the card can say "2 live · 14 recordings":
+--
+--   live_count      public sessions with a host seen in the last 90 s — the
+--                   same rows /c/<handle> lists as streams.
+--   recording_count finished, playable recordings of public sessions — the
+--                   same rows list_channel_recordings returns.
+--
+-- The return type changes, so the old signature has to go first.
+
+DROP FUNCTION IF EXISTS public.list_all_channels(integer);
+
+CREATE OR REPLACE FUNCTION public.list_all_channels(p_limit integer DEFAULT 48)
+RETURNS TABLE(
+  handle text, name text, description text, avatar_url text, banner_url text,
+  subscriber_count bigint, is_live boolean, live_count bigint, recording_count bigint)
+LANGUAGE plpgsql STABLE SECURITY DEFINER SET search_path TO 'public' AS $function$
+DECLARE live_ttl CONSTANT interval := interval '90 seconds';
+BEGIN
+  RETURN QUERY
+  SELECT c.handle, c.name, c.description, c.avatar_url, c.banner_url,
+    (SELECT COUNT(*) FROM public.channel_subscriptions cs WHERE cs.channel_id = c.id),
+    EXISTS (SELECT 1 FROM public.sessions s WHERE s.channel_id = c.id AND s.is_public
+      AND s.current_host_id IS NOT NULL AND s.host_last_seen_at > NOW() - live_ttl),
+    (SELECT COUNT(*) FROM public.sessions s WHERE s.channel_id = c.id AND s.is_public
+      AND s.current_host_id IS NOT NULL AND s.host_last_seen_at > NOW() - live_ttl),
+    (SELECT COUNT(*) FROM public.recordings r
+      JOIN public.sessions s ON s.id = r.session_id
+      WHERE r.channel_id = c.id AND r.status = 'ready' AND r.playback_url IS NOT NULL
+        AND s.is_public = TRUE)
+  FROM public.channels c
+  ORDER BY EXISTS (SELECT 1 FROM public.sessions s WHERE s.channel_id = c.id AND s.is_public
+      AND s.current_host_id IS NOT NULL AND s.host_last_seen_at > NOW() - live_ttl) DESC,
+    (SELECT COUNT(*) FROM public.channel_subscriptions cs WHERE cs.channel_id = c.id) DESC, c.created_at DESC
+  LIMIT GREATEST(1, LEAST(COALESCE(p_limit, 48), 100));
+END; $function$;
+GRANT EXECUTE ON FUNCTION public.list_all_channels(integer) TO anon, authenticated;