中文版：请根据我提供的合同签订日期、违约日期、损害发生日期、催告日期、协商记录、投诉记录以及计划采取法律行动的时间，帮助我梳理可能涉及的诉讼时效或程序期限问题。
请建立完整时间线，并指出哪些日期可能具有法律意义。
不要直接给出一个确定的时效结论，除非已经明确司法辖区和适用法律。请重点告诉我应该向当地律师或官方法律资料确认哪些期限。

英文版：Based on the contract date, breach date, date of harm, demand letters, negotiations, complaints, and planned legal action, help identify potential limitation periods or procedural deadlines.
Create a complete timeline and identify dates that may have legal significance.
Do not provide a definitive limitation-period conclusion without knowing the jurisdiction and applicable law. Clearly identify which deadlines should be verified using current local legal sources.

该提示词已在以下工具中验证有效：ChatGPT、Claude、Gemini、Perplexity