Bill 26b8c2bd77 test: add comprehensive frontmatter-utils tests ...

Add 82 comprehensive tests for frontmatter-utils.ts achieving 96.58% coverage.

Test coverage:
- extractFrontmatter(): All delimiters, line endings, parse errors, edge cases
- extractFrontmatterSummary(): Field extraction, normalization, null handling
- hasFrontmatter(): Quick detection with various formats
- serializeFrontmatter(): All data types, special characters, quoting rules
- parseExcalidrawMetadata(): JSON extraction, compression detection, error handling

Mock parseYaml from obsidian module for isolated testing.

Uncovered lines (253-255, 310) are unreachable defensive code paths.

2025-10-25 22:14:29 -04:00

27 KiB

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