对话洁净度技巧：工具调用场景关闭“过程旁白”泄漏的验收清单

• Gateway can be upgraded/restarted in a controlled environment.
• You have a reproducible prompt that triggers at least one tool call.

1. Prepare two test prompts: one that triggers tool use, one normal no-tool reply, and record current behavior baseline.
2. Upgrade to a build containing PR #20045 and restart gateway.
3. Replay tool-call prompt and verify interim narration text is no longer delivered to user.
4. Replay no-tool prompt and ensure normal textual replies remain intact.
5. Capture before/after evidence in regression notes for future release checks.

• If your deployment streams partial responses through custom middleware, re-check end-user output path for extra text leakage（需验证）.
• Do not assume this fix covers all provider-specific streaming adapters without targeted tests.

This tip is aggregated from community/public sources and preserved with attribution.