Fix control status: do not treat /health as fleet (missing positions).

Co-authored-by: Cursor <cursoragent@cursor.com>

control/backend/app/proxy.py

@@ -74,13 +74,23 @@ async def probe_health(
         node, "GET", "/health", require_token=False, timeout=timeout
     )
     if code == 200 and isinstance(data, dict):
-        return {"online": True, "health": data, "error": None}
+        return {
+            "online": True,
+            "health": data,
+            "error": None,
+            "from_fleet": False,
+        }
     # fallback fleet status if health blocked
     code2, data2 = await call_node(
         node, "GET", "/api/fleet/status", require_token=True, timeout=timeout
     )
     if code2 == 200 and isinstance(data2, dict):
-        return {"online": True, "health": data2, "error": None}
+        return {
+            "online": True,
+            "health": data2,
+            "error": None,
+            "from_fleet": True,
+        }
     detail = ""
     if isinstance(data, dict):
         detail = str(data.get("detail") or "")
@@ -88,4 +98,5 @@ async def probe_health(
         "online": False,
         "health": None,
         "error": detail or f"HTTP {code}",
+        "from_fleet": False,
     }