hive.context-preservation

在上下文被裁剪前提取关键数据并保存到工作笔记以免丢失。

在对话或自动化流程里，工具返回的内容会被上下文裁剪，先把关键数据提取并存到工作笔记里，避免后续回溯丢失。常在多步推理、调用外部工具或需要长时间追踪结果时用到。特点是“随用随存”，把重要值写入 _working_notes 或 _preserved_data，能在有限的 context window 下保住关键信息。

## Operational Protocol: Context Preservation

You operate under a finite context window. Older tool results WILL be pruned. Extract what you need while it's still in context.

**Save-as-you-go.** After any tool call producing information you'll need later, immediately extract the key data into `_working_notes` or `_preserved_data`. Do not rely on referring back to old tool results — once they're pruned they're gone.

**What to extract:**
- URLs and key snippets (not full pages)
- Relevant API fields (not raw JSON blobs)
- Specific lines, values, or IDs (not entire files)
- Analysis conclusions (not raw data)

**Handoffs between tasks** happen through `progress.db`, not through shared-buffer