Add per-server notes field and show hardware info on dashboard

app/app.py

@@ -39,6 +39,7 @@ class Server(db.Model):
     is_online = db.Column(db.Boolean, default=False)
     last_collected = db.Column(db.DateTime, nullable=True)
     details = db.Column(db.JSON, nullable=True)
+    notes = db.Column(db.Text, default='')
     __table_args__ = (db.UniqueConstraint('username', 'hostname', name='uq_user_host'),)
 
 
@@ -282,11 +283,22 @@ def api_servers():
             'url': s.url,
             'is_online': s.is_online,
             'last_collected': s.last_collected.isoformat() if s.last_collected else None,
+            'notes': s.notes,
             'details': s.details,
         })
     return jsonify(result)
 
 
+@app.route('/api/servers/<int:server_id>/notes', methods=['PUT'])
+def api_update_notes(server_id):
+    from flask import request
+    server = Server.query.get_or_404(server_id)
+    data = request.get_json()
+    server.notes = data.get('notes', '')
+    db.session.commit()
+    return jsonify({'ok': True})
+
+
 def _ip_sort_key(ip_str):
     if not ip_str:
         return [999, 999, 999, 999]