The new concept docs (and their "See also" reciprocal links) reference
each other by real filename -- "concepts-accounts.html" -- which is the
correct, working URL on the Jekyll/GitHub Pages build (a page's URL there
IS its filename stem), but doesn't match this viewer's own short slugs
(DOCS keys, e.g. "accounts" -> /docs/accounts), so fixDocLinks() left
those links unrewritten and 404ing in-app.
Rather than rewrite the docs to two different link forms depending on
target, resolve by filename as a fallback when the slug lookup misses --
one link written in a doc now works correctly on both targets.
Bumps to v1.1.13.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KDEx8ghuZR61pqPXc6da9C