chore(main): release 0.17.0

[github-actions]

🤖 I have created a release beep boop

0.17.0 (2026-04-22)

⚠ BREAKING CHANGES

• The engine front matter format changed from model names (engine: claude-opus-4.5) to engine identifiers (engine: copilot). Model is now a sub-field in the object form (engine: { id: copilot, model: ... }).

Features

• add cyclomatic complexity reducer agentic workflow (#298) (1066a2f)
• align engine front matter with gh-aw and hook up Engine enum (#286) (f90bd81)

Bug Fixes

• prefix agent filename with ado to distinguish from gh-aw (#299) (b3ecca7)

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