Backend implementation for renaming a note:
- Updates H1 heading and title frontmatter to new name
- Renames file using slugified new title
- Scans all vault .md files and replaces [[OldTitle]] → [[NewTitle]]
in both content and frontmatter (preserves pipe aliases)
- Returns new path and count of updated files
Well-factored with extracted helpers: build_wikilink_pattern,
replace_wikilinks_in_content, collect_md_files, update_h1_title,
update_note_title_in_content, frontmatter_has_title_key, to_path_stem.
All 147 tests pass including 7 new rename tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
68dfab473a