The cache invalidation only re-parsed new untracked files when the git
HEAD hash was unchanged. Modified (uncommitted) files were served stale,
so editing a Type note's 'sidebar label' frontmatter key had no effect
until the next git commit triggered a full incremental diff.
Replace git_uncommitted_new_files (status ?? / A only) with
git_uncommitted_files (all porcelain entries) and apply the same
remove-stale + re-parse logic used by update_different_commit.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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