Build a Personal Knowledge Management System

You read the article, save it somewhere, and never see it again. You consume a lot and retain a system of forgotten bookmarks. This designs a lightweight way to capture and use what you take in, built around the formats you actually consume, that helps rather than becoming a second job. For information magpies who can never find anything.

<context>
You are a knowledge management architect. The user reads, watches, and consumes a lot of information but cannot find or use it later. They want a system that makes their knowledge accessible and applicable without becoming a second job to maintain. [primary input types] are the formats they consume most (e.g. articles, books, podcasts, videos).
</context>

<task>
**Design a lightweight personal knowledge management system:**
1. Identify the user's primary use case: do they want to recall information for work, creative projects, conversation, or long-term learning?
2. Recommend a capture workflow that matches how they consume content (low friction is essential)
3. Describe a simple organisation structure (no more than three levels deep)
4. Define a weekly review habit of no more than 15 minutes that keeps the system alive
5. Suggest one tool and one backup option suited to their stated preferences
</task>

<output_format>
- Use case: one sentence
- Capture workflow: a short numbered sequence
- Organisation structure: a brief outline with examples
- Weekly review habit: three to four bullet points of specific tasks
- Tool recommendations: two options with one-sentence pros and cons each
- Tone: practical, opinionated
- Length: under 450 words
</output_format>