Expose YouTube manager status on /health (no secrets).

app.py

@@ -730,6 +730,19 @@ def health_public():
                     'last_error':tsk.get('last_error') or '','source_age':rs.get('source_age'),
                     'output_seconds':rs.get('output_seconds') or 0})
     res=resource_snapshot()
+    mgr=bool(youtube.manager_thread and youtube.manager_thread.is_alive())
+    y_events=0; y_hist=0; y_senders=0; y_status=''; y_skip=''
+    try:
+        jd=youtube.journal.read()
+        y_events=len(jd.get('events') or {})
+        y_hist=len(jd.get('history') or [])
+        y_status=str(getattr(youtube,'status_text','') or '')[:160]
+        y_senders=sum(1 for e in (youtube.senders or {}).values() if e.get('thread') and e['thread'].is_alive())
+        skip=getattr(youtube,'_skip_last',None) or {}
+        if skip:
+            y_skip='; '.join('%s: %s'%(u,str(t)[:80]) for u,t in list(skip.items())[-3:])[:200]
+    except Exception:
+        pass
     return {'application':'running','monitor':'running' if _monitor_alive.is_set() else 'stopped',
             'accounts':n,'enabled':enabled,'active_relays':active,
             'max_concurrent_relays':max_concurrent_relays(),
@@ -739,6 +752,9 @@ def health_public():
             'last_error_user':last_error_user,
             'version':APP_VERSION,'rtmp_configured':rtmp_configured(),
             'metadata_automation':_oauth_automation_on(),
+            'youtube_manager':'running' if mgr else 'stopped',
+            'youtube_status':y_status,'youtube_events':y_events,'youtube_history':y_hist,
+            'youtube_senders':y_senders,'youtube_skip':y_skip,
             'broadcasters':per}
 
 @app.get('/api/health')