wiki-lint

name: wiki-lint description: Health check on ~/brain/wiki/. Find orphan pages, broken cross-reference links, stale last_updated dates, missing frontmatter fields, concepts mentioned repeatedly without a dedicated page, and contradictions between pages. Use when the user says "/wiki-lint" or "lint the wiki."

Scan the wiki and report problems. Don't auto-fix — propose fixes and wait for confirmation.

Orphan pages — any page with zero inbound [[slug]] references from other pages or from index.md.
Broken links — any [[slug]] that doesn't resolve to an existing page file.
Missing frontmatter — every page must have title, last_updated, tags, and at least one cross-reference in the body.
Stale content — flag pages with last_updated older than 90 days and suggest review.
Undocumented concepts — tokens/phrases that appear 3+ times across pages without a dedicated page.
Contradictions — conflicting facts between pages (dates, roles, numbers, URLs).
Index drift — entries in index.md that don't match page filenames, or pages not listed in index.md.
Log hygiene — ensure log.md entries are append-only (no modifications to prior dated sections) and parseable headers.

Markdown report grouped by check:

# Wiki Lint Report — YYYY-MM-DD

## Orphan pages (N)
- slug — suggested fix

## Broken links (N)
- page.md → [[bad-slug]]

...

Append a log entry:

## [YYYY-MM-DD] lint | <one-line summary>
Issues found: <counts>
Notes: <top priorities>

Report-only by default. Make no edits unless the user approves each fix.
Never delete pages even when orphaned — suggest merging or adding cross-references instead.