feat: expose monitoring pf health detail

internal/pf/worker.go

@@ -34,6 +34,10 @@ type CheckResult struct {
 	Changes int `json:"changes"`
 }
 
+type HealthResult struct {
+	Status string `json:"status"`
+}
+
 type Suggestion struct {
 	Source       string   `json:"source"`
 	ExternalID   string   `json:"external_id"`
@@ -104,6 +108,17 @@ func (w *Worker) Suggest(ctx context.Context, projectID int64) (*SuggestionsResp
 	return &out, nil
 }
 
+func (w *Worker) Health(ctx context.Context) error {
+	var out HealthResult
+	if err := w.call(ctx, "health", map[string]any{}, &out); err != nil {
+		return err
+	}
+	if out.Status != "ok" {
+		return fmt.Errorf("worker status=%s", out.Status)
+	}
+	return nil
+}
+
 func (w *Worker) call(ctx context.Context, command string, payload any, out any) error {
 	ctx, cancel := context.WithTimeout(ctx, 15*time.Minute)
 	defer cancel()