Pass username/port to initial push monitor deployment

- Update create_from_suggestion to accept username and port
- Pass scan's username/port when creating suggested monitors
- Fixes first deploy using wrong username

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/monitors.py

@@ -153,7 +153,13 @@ class MonitorService:
         self.created_monitors.extend(created)
         return created
 
-    def create_from_suggestion(self, suggestion: MonitorSuggestion, hostname: str) -> dict:
+    def create_from_suggestion(
+        self,
+        suggestion: MonitorSuggestion,
+        hostname: str,
+        username: str = "root",
+        port: int = 22,
+    ) -> dict:
         """
         Create a monitor from a Claude suggestion.
         In production mode, this executes automatically.
@@ -208,6 +214,8 @@ class MonitorService:
                         push_token=push_token,
                         monitor_id=monitor_id,
                         interval_minutes=max(1, suggestion.interval // 60),
+                        username=username,
+                        port=port,
                     )
                     response["deployment"] = deploy_result
                 else: