feat: expose /metrics endpoint in health daemon

uni-wizard/daemons/health_daemon.py

@@ -24,32 +24,52 @@ class HealthCheckHandler(BaseHTTPRequestHandler):
         # Suppress default logging
         pass
     
-    def do_GET(self):
+def do_GET(self):
         """Handle GET requests"""
         if self.path == '/health':
             self.send_health_response()
         elif self.path == '/status':
             self.send_full_status()
+        elif self.path == '/metrics':
+            self.send_sovereign_metrics()
         else:
             self.send_error(404)
-    
-    def send_health_response(self):
-        """Send simple health check"""
-        harness = get_harness()
-        result = harness.execute("health_check")
-        
+
+    def send_sovereign_metrics(self):
+        """Send sovereign health metrics as JSON"""
         try:
-            health_data = json.loads(result)
-            status_code = 200 if health_data.get("overall") == "healthy" else 503
-        except:
-            status_code = 503
-            health_data = {"error": "Health check failed"}
-        
-        self.send_response(status_code)
+            import sqlite3
+            db_path = Path.home() / ".timmy" / "metrics" / "model_metrics.db"
+            if not db_path.exists():
+                data = {"error": "No database found"}
+            else:
+                conn = sqlite3.connect(str(db_path))
+                row = conn.execute("""
+                    SELECT local_pct, total_sessions, local_sessions, cloud_sessions, est_cloud_cost, est_saved
+                    FROM sovereignty_score ORDER BY timestamp DESC LIMIT 1
+                """).fetchone()
+                
+                if row:
+                    data = {
+                        "sovereignty_score": row[0],
+                        "total_sessions": row[1],
+                        "local_sessions": row[2],
+                        "cloud_sessions": row[3],
+                        "est_cloud_cost": row[4],
+                        "est_saved": row[5],
+                        "timestamp": datetime.now().isoformat()
+                    }
+                else:
+                    data = {"error": "No data"}
+                conn.close()
+        except Exception as e:
+            data = {"error": str(e)}
+
+        self.send_response(200)
         self.send_header('Content-Type', 'application/json')
         self.end_headers()
-        self.wfile.write(json.dumps(health_data).encode())
-    
+        self.wfile.write(json.dumps(data).encode())
+
     def send_full_status(self):
         """Send full system status"""
         harness = get_harness()