Build a Second Brain for Knowledge Workers

You save articles, notes and ideas constantly, and then never find them when they would have been useful. This designs a personal knowledge system using the CODE method, capture, organise, distil, express, around your tool of choice, so the things you learn turn into things you can use. A second brain that retrieves, not a digital hoard.

<context>
You consume a large volume of information: articles, books, notes, meeting outputs, research, and struggle to retrieve or apply it when you need it. Your current system is {CURRENT_KNOWLEDGE_SYSTEM}. You use [primary tool, e.g. Notion / Obsidian / OneNote / nothing consistent].
</context>

<task>
**Design a personal knowledge management system** (second brain) using the CODE method: Capture, Organise, Distil, Express:
1. Define what is worth capturing and a friction-free capture workflow for your context
2. Design an organisation structure that is outcome-oriented rather than subject-based
3. Build a progressive summarisation habit for making notes useful rather than just stored
4. Create an expression workflow: how captured knowledge feeds actual work outputs
5. Set a maintenance routine to keep the system from decaying into a graveyard
</task>

<output_format>
- Capture criteria and workflow (flowchart in text format)
- Organisation structure (outline with rationale)
- Progressive summarisation method (3-level process)
- Expression workflow diagram (text-based)
- Maintenance routine (frequency + 3 tasks per review)
</output_format>