Bill fb959338c3 test: add coverage regression protection ...

- Add Istanbul ignore comments for intentionally untested code
  - frontmatter-utils.ts: Buffer.from fallback (unreachable in Jest/Node)
  - note-tools.ts: Default parameter and response building branches
- Add tests for error message formatting (error-messages.test.ts)
- Add coverage thresholds to jest.config.js to detect regressions
  - Lines: 100% (all testable code must be covered)
  - Statements: 99.7%
  - Branches: 94%
  - Functions: 99%

Result: 100% line coverage on all modules with regression protection.
Test count: 512 → 518 tests (+6 error message tests)

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

1.8 KiB

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