A click on a child of an <a> (e.g. nested <strong>, <em>, <code>, icon)
made event.target a non-anchor, so getAttribute('href') returned null
and the handler bailed without preventDefault. The browser then
performed the native navigation, which for relative links like
'../note.md' resolved against the current /:user/:repo URL and the SPA
re-routed treating the destination as a new repo.
Pure-fragment links (#heading) used to fall through to the browser's
default jump. Handle them in the click listener and scope the lookup
to the same stacked note so identical heading ids in other notes
don't win, with smooth scroll behavior to match cross-note anchors
into already-stacked notes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Links like `path/to/note.md#heading` previously errored with "Note not
found" because the full href (including `#hash`) was matched against
file paths. Split the fragment off in the link handler, plumb it through
the event bus, and scroll the matching heading into view once the
target note is in place. Headings now get GitHub-style ids via
markdown-it-anchor + github-slugger so the anchors actually exist.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
