Update ToneBridge usage metrics

tonebridge_usage_metrics.jsonl

@@ -0,0 +1 @@
+{"context": "work-formal", "corrected_sentence": "我今天迟到，麻烦您等我", "correction_mode": "tone-aware", "created_at": "2026-06-13T06:33:49.280458Z", "error_type": "tone", "evaluation": null, "generation_time_seconds": 11.214, "model_id": "Alphaplasti/ToneBridge-MiniCPM4.1-8B", "original_sentence": "我今天迟到，你等我", "request_id": "d2616e3c-2293-4af2-9010-ab1e01d8d6dc", "status": "ok", "target_tone": "formal professional"}