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SCHEMA.md

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+# Wiki Schema
+
+## Domain
+LLM Wiki の試用・運用メモ。対象は「LLM が保守する持続的な Markdown 知識ベース」というパターン、その運用方法、関連ツール、比較対象。
+
+## Conventions
+- File names: lowercase, hyphens, no spaces (e.g., `llm-wiki-pattern.md`)
+- Every wiki page starts with YAML frontmatter.
+- Use Obsidian-style double-bracket links between pages; aim for at least 2 outbound links per page.
+- When updating a page, always bump the `updated` date.
+- Every new page must be added to `index.md` under the correct section.
+- Every action must be appended to `log.md`.
+- Raw sources under `raw/` are immutable after ingest.
+
+## Frontmatter
+```yaml
+---
+title: Page Title
+created: YYYY-MM-DD
+updated: YYYY-MM-DD
+type: entity | concept | comparison | query | summary
+tags: [from taxonomy below]
+sources: [raw/articles/source-name.md]
+confidence: high | medium | low
+---
+```
+
+## raw/ Frontmatter
+```yaml
+---
+source_url: https://example.com/article
+ingested: YYYY-MM-DD
+sha256: <hex digest of raw body>
+---
+```
+
+## Tag Taxonomy
+- Methods: wiki, knowledge-base, retrieval, synthesis, maintenance
+- Tools: obsidian, markdown, git, cli
+- Roles: agent, human-in-the-loop
+- Meta: comparison, workflow, source
+
+## Page Thresholds
+- Create a page when an entity/concept is central to one source or appears in 2+ sources.
+- Add to an existing page when a source mentions something already covered.
+- Do not create pages for passing mentions.
+- Split a page when it exceeds ~200 lines.
+
+## Update Policy
+When new information conflicts with existing content:
+1. Check source dates.
+2. Note both positions with dates and sources.
+3. Mark contested pages with `contested: true` and/or `contradictions:`.
+4. Flag for user review in lint output.