claude-code-chat-browser: YAML escape fix — handle colons, hashes, tabs, bool literals in frontmatter export #235

Job	Run time
Frontend unit tests (vitest) (ubuntu-latest)	23s
ruff + pip-audit (ubuntu-latest)	22s
pytest (macos-latest)	33s
pytest (ubuntu-latest)	51s
Performance benchmarks (gated)	30s
pytest (windows-latest)	1m 24s
API integration tests + coverage (ubuntu-latest)	21s
Frontend unit tests (vitest) (macos-latest)	29s
API integration tests + coverage (macos-latest)	25s
ruff + pip-audit (macos-latest)	17s
API integration tests + coverage (windows-latest)	1m 12s
Verify prod requirements.txt is sufficient	6s
ruff + pip-audit (windows-latest)	1m 7s
Frontend unit tests (vitest) (windows-latest)	45s
mypy	19s
	9m 4s

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