# Hub, Plan, and Index

## `00-Hub.md`

Use as the project landing page.

Must contain:
- project summary
- current focus
- current questions
- next actions
- important links
- recent important changes

## `01-Plan.md`

Use for durable plans and active tasks.

Must contain:
- current priorities
- active tasks
- experiment queue
- writing queue when relevant
- current research state when the project has an active research question

Recommended research state block:

```md
## Current Research State

Current question:
Current hypothesis:
Strongest evidence:
Weakest evidence:
Open blockers:
Next experiment:
Do not repeat:
Last decision:
```

Keep this state in `01-Plan.md`. Do not create a separate `.scholar/state.md` for the default Obsidian workflow.

## `02-Index.md`

Use as the human-friendly MOC.

Rules:
- do not mirror the full registry
- list only important and currently active notes
- group links by `Sources`, `Knowledge`, `Experiments`, `Results`, `Writing`, and `Maps`
- keep the note readable as a project directory page
