Summarise a Long Email Thread

You've been added to a thread that's been running for weeks, fifty replies deep, and you're expected to be up to speed by the next meeting. Name the project. This pulls it into four sections: what started it, the decisions made and by whom, and the questions still hanging. You join the conversation knowing where it stands, not scrolling to the top hoping for context.

<context>
You have inherited a long email thread related to {PROJECT_NAME} and need to get up to speed quickly. The thread spans multiple participants and covers decisions, objections, and unresolved questions.
</context>

<task>
**Summarise the thread into four sections:**
1. Context: what initiated this thread and what the core topic is
2. Key decisions made: what has been agreed, by whom, and when
3. Unresolved issues: what remains open, contested, or unclear
4. Action items: who needs to do what, with any stated deadlines
</task>

<output_format>
- Four clearly labelled sections
- An action item table: owner, task, deadline
- A one-sentence status: where does this thread currently stand?
</output_format>