fixed status codefor health

app/main.py

@@ -1,6 +1,6 @@
 import os
-import signal
-from fastapi import FastAPI
+from fastapi import FastAPI, Response, status
+from fastapi.responses import JSONResponse
 
 app = FastAPI()
 _healthy = True
@@ -9,13 +9,15 @@ _healthy = True
 @app.get("/health")
 def health():
     if not _healthy:
-        return {"status": "unhealthy"}, 503
+        return JSONResponse(
+            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
+            content={"status": "unhealthy"}
+        )
     return {"status": "ok"}
 
 
 @app.post("/break")
 def break_health():
-    """Simulira pad servisa za testiranje liveness probe-a"""
     global _healthy
     _healthy = False
     return {"message": "Servis je sada nezdrav — ocekuj restart"}