Read-only analysis skill that finds broken [[wiki-links]] by
extracting link targets from all markdown files and verifying
each target file exists via Glob. Groups broken links by source
file and suggests close matches for misspelled targets.
Handles edge cases: heading anchors, block references, aliases,
embedded images, template placeholders, and external links.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
