Add health check endpoint at /ok

- Returns {"status": "ok"} as JSON
- No authentication required
- Useful for Kubernetes liveness/readiness probes

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

main.go

@@ -193,6 +193,11 @@ func vectorHandler(w http.ResponseWriter, r *http.Request) {
 	})
 }
 
+func healthHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
+}
+
 func main() {
 	port := os.Getenv("PORT")
 	if port == "" {
@@ -200,6 +205,7 @@ func main() {
 	}
 
 	http.HandleFunc("/vector", vectorHandler)
+	http.HandleFunc("/ok", healthHandler)
 	log.Printf("Starting server on port %s...\n", port)
 	log.Fatal(http.ListenAndServe(":"+port, nil))
 }