test: add comprehensive coverage for governance and markdown utilities
Coverage Improvements (Task 3 - Week 1):
- governance.routes.js: 31.81% → 100% (+68.19%)
- markdown.util.js: 17.39% → 89.13% (+71.74%)
New Test Files:
- tests/integration/api.governance.test.js (33 tests)
- Authentication/authorization for all 6 governance endpoints
- Request validation (missing fields, invalid input)
- Admin-only access control enforcement
- Framework component testing (classify, validate, enforce, pressure, verify)
- tests/unit/markdown.util.test.js (60 tests)
- markdownToHtml: conversion, syntax highlighting, XSS sanitization (23 tests)
- extractTOC: heading extraction and slug generation (11 tests)
- extractFrontMatter: YAML front matter parsing (10 tests)
- generateSlug: URL-safe slug generation (16 tests)
This completes Week 1, Task 3: Increase test coverage on critical services.
Previous tasks in same session:
- Task 1: Fixed 29 production test failures ✓
- Task 2: Completed Koha security implementation ✓
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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