v0.9.0

0.9.0 (2026-11-01)

⚠ BREAKING CHANGES

• deliver prompts on stdin (#169)
• session: total_cost/1 returns nil instead of 0.0.
• options that were ignored now raise ArgumentError.

Features

• add LastMessage to read --output-last-message back (#168) (dd5bf0d)
• deliver prompts on stdin (#169) (a8f513f)

Bug Fixes

• env: accept nil and false as unset in Config.env on every runner path (#162) (f961e05)
• map every exec option through one shared mapper (#160) (708bd67)
• session: return failed turns as errors and take the thread id from thread.started (#164) (4cbfb6a)
• session: return nil from total_cost/1, since codex reports no cost (#163) (e99c936)
• stream: end streams with an error item on a nonzero exit or spawn failure (#161) (17e42ec)