Generate Packing List Optimised for Solo Light Travel

You are carrying everything yourself and have promised not to overpack again. This builds a minimalist list for your trip profile, sorted into clothing, tech, documents, health and safety, and comfort, applying a one-in-one-out rule so each item earns its place and flagging anything that does two jobs. The bag stays light because nothing rides along on a maybe.

<context>
{TRIP_PROFILE} describes my upcoming solo trip including destination climate, duration, and planned activities.
</context>

<task>
**Generate a minimalist packing list** for a solo traveler who must carry everything in one bag. Follow these steps:
1. Categorise items: Clothing, Tech, Documents, Health and Safety, Comfort
2. Apply a one-in-one-out rule -- justify each item's inclusion
3. Flag items that double as multiple-use
4. Suggest what to buy at [destination] instead of packing
- Assume a [bag size, e.g. 40L backpack] maximum
- Prioritise items critical for solo safety and self-sufficiency
</task>

<output_format>
Checklist grouped by category, with a weight estimate and dual-use notes per item.
</output_format>