# Archive Rules (Dedup Logic)

## Similarity Check

Before writing a new wiki page:
1. Search `wiki/` for filenames matching the core topic.
2. If any match with >90% title similarity, treat as duplicate.
3. Append new content as a "Supplemental Update" section at the bottom of the existing page.
4. Include a timestamp for each update in `YYYY-MM-DD HH:MM` format.

## Timestamp Format

```
---
updated: 2026-05-14 10:00
---
```

## Obsidian Links

Use `[[Page Name]]` for internal wiki links. When referencing a concept that has its own wiki page, always use wikilink syntax.

## Discard Criteria

Skip raw content if:
- Extracted body < 300 words
- No substantive technical or knowledge value
- Pure navigation pages, ad pages, or login walls