test: add estimate_cost test coverage (6 tests)#291

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test/estimate-cost-coverage-v2

Commits on Mar 18, 2026

docs: add example CLAUDE.md for automatic preflight integration
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Commits on Mar 19, 2026

feat(cli): add --help and --version flags, fix Node badge to 20+
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feat: add export_timeline tool for markdown session reports
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test: add comprehensive tests for preflight_check tool
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fix: prevent shell injection and broken commands in run() callers
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refactor: extract scorePrompt into lib, add 20 tests, fix scope scoring bug
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test: add comprehensive tests for estimate_cost tool
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