Agentflow v8.4.6

Agentflow v8.4.6 makes the devlog's short [SUMMARY] contain one concise bullet for each numbered [FINAL REPORT] item, in the same order. The English and Traditional Chinese guides and the assistant brief now describe that rule consistently. Runtime behavior is unchanged.

The release uses the existing publisher. All 18 focused release tests passed, the assembled public package matched the published checkout, and an independent reviewer passed Outcome, Minimality, and Conformance on the exact source commit before publication.