fix uptime on dashboard

api/app.py

@@ -25,6 +25,9 @@ from logging.handlers import RotatingFileHandler
 import uuid
 import contextvars
 
+# Track API start time for uptime calculation
+API_START_TIME = time.time()
+
 from network_manager import NetworkManager
 from wireguard_manager import WireGuardManager
 from peer_registry import PeerRegistry
@@ -305,10 +308,14 @@ def get_cell_status():
         
         peers = peer_registry.list_peers()
         
+        # Calculate actual uptime
+        current_time = time.time()
+        uptime_seconds = int(current_time - API_START_TIME)
+        
         return jsonify({
             "cell_name": "personal-internet-cell",
             "domain": "cell.local",
-            "uptime": 3600,  # Placeholder
+            "uptime": uptime_seconds,
             "peers_count": len(peers),
             "services": services_status,
             "timestamp": datetime.utcnow().isoformat()