docs: delegate wiki operations to llmwiki skill

Remove duplicated wiki instructions from AGENTS.md; the skill
holds the canonical definitions of ingest, query, lint, page schema,
and conventions.

AGENTS.md

@@ -1,99 +1,8 @@
 # LLM Wiki — Agent Instructions
 
-You are a wiki maintainer. This repo is a personal knowledge base you build and
+This repo is a personal knowledge base. Wiki operations are handled by the
-maintain incrementally. You never modify files in `raw/`. You own everything in
+`llmwiki` skill (see `.pi/skills/llmwiki/SKILL.md`). Never modify files in
-`wiki/`.
+`raw/`; you own everything in `wiki/`.
-
-## Directory layout
-
-```
-raw/            Source documents (immutable — read only)
-raw/assets/     Images, PDFs, attachments
-wiki/           Your domain — create, edit, maintain freely
-wiki/index.md   Catalog of all wiki pages (you maintain this)
-wiki/log.md     Append-only operation log (you maintain this)
-```
-
-## Page schema
-
-Every wiki page must have YAML frontmatter:
-
-```yaml
----
-type: concept | entity | source | synthesis | comparison
-title: ""
-tags: []
-sources: [] # filenames from raw/ that support this page
-related: [] # wiki page filenames this page links to
-updated: YYYY-MM-DD
-confidence: high | medium | low
----
-```
-
-For `updated`, always use a tool to get the current date - never hardcode or
-guess it. For any measurement or metric field, always use a tool to retrieve or
-compute the value rather than estimating.
-
-Follow the frontmatter with a one-paragraph summary, then the body.
-
-## Operations
-
-### ingest \<source\>
-
-1. Read the source file in `raw/`.
-2. Discuss key takeaways with the user.
-3. Write `wiki/src-<slug>.md` (type: source) summarizing the source.
-4. For each significant entity or concept: find or create its wiki page, update
-   it with new information, update `sources:` and `related:` frontmatter.
-5. Note contradictions with existing pages explicitly in the relevant pages.
-6. Update `wiki/index.md` — add new pages, update summaries of changed pages.
-7. Append to `wiki/log.md`:
-   ```
-   ## [YYYY-MM-DD] ingest | <source filename>
-   Pages created: ...
-   Pages updated: ...
-   ```
-
-### query \<question\>
-
-1. Read `wiki/index.md` to identify relevant pages.
-2. Read those pages.
-3. Synthesize an answer with citations linking to wiki pages.
-4. Ask the user: "File this as a new wiki page?" If yes, write it as type:
-   synthesis and update the index.
-5. Append to `wiki/log.md`:
-   ```
-   ## [YYYY-MM-DD] query | <question>
-   Pages read: ...
-   Filed: yes/no
-   ```
-
-### lint
-
-1. Read all pages in `wiki/`.
-2. Report:
-   - Contradictions between pages
-   - Orphan pages with no inbound links
-   - Concepts mentioned but lacking their own page
-   - Missing `related:` cross-references
-   - Low-confidence claims without a source
-3. For each issue, propose a fix. Apply fixes the user approves.
-4. Append to `wiki/log.md`:
-   ```
-   ## [YYYY-MM-DD] lint
-   Issues found: ...
-   Fixed: ...
-   ```
-
-## Conventions
-
-- Filenames: lowercase hyphenated slugs — `transformer-architecture.md`
-- Source summaries: prefix `src-` — `src-attention-is-all-you-need.md`
-- Never delete a wiki page without user confirmation
-- When a concept lacks a source, create a stub and mark `confidence: low` rather
-  than leaving it undocumented
-- `wiki/index.md` is sorted by type, then alphabetically within each type
-- `wiki/log.md` entries start with `## [YYYY-MM-DD]` so they are grep-parseable
 
 ## Shell Scripts