Break up the monolithic useNoteActions hook (cc=37, 232 LoC, score 6.89) into:
- useTabManagement: owns tab state and all tab operations (score 9.53)
- mockFrontmatterHelpers: extracted and simplified YAML manipulation (score 9.09+)
- useNoteActions: now focused on note creation and frontmatter operations (score 9.22)
Key improvements:
- Extracted entryMatchesTarget() to reduce wikilink matching complexity
- Deduplicated replaceKeyInLines/removeKeyFromLines into processKeyInLines
- Converted buildNewEntry to use object param (was 5 positional args)
- Overall complexity reduced from cc=37 to cc=11 in useNoteActions
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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