chore(main): release 0.3.0

[github-actions]

🤖 I have created a release beep boop

0.3.0 (2026-04-11)

Features

• add Config, Command behaviour, and binary discovery (bbda01e)
• add Config, Command behaviour, and binary discovery closes #1 (9b56452)
• add Exec command, Result struct, and convenience API (4468180)
• add Exec command, Result struct, and convenience API closes #2 (4a9bc5b)
• add JsonLineEvent, execute_json/2, and stream/2 (f42eff8)
• add JsonLineEvent, execute_json/2, and stream/2 closes #3 (f92cd07)
• Auth, Version, MCP, and Features commands (4ed2259)
• commands: add Sandbox, Fork, and Apply commands closes #13 (#21) (c6b9948)
• completion: add shell completion script generation closes #18 (#20) (2029753)
• mcp_server: add McpServer command for codex mcp-server closes #14 (#22) (bb798c1)
• package: hex.pm publish prep closes #17 (#24) (80ff06e)
• review: add Review command with builder and convenience API (f20e883)
• review: add Review command with builder and convenience API closes #4 (18a25d3)
• Session and SessionServer for multi-turn (17e254a)
• session: add Session and SessionServer for multi-turn sessions (99ec08a), closes #5

Bug Fixes

• close stdin on streaming Port paths (#38) (add5f29), closes #37
• extract thread_id from Codex events for Session.send multi-turn (#41) (d43466d), closes #40
• update source URL to genagent org (#42) (b6526b3)
• use Port with closed stdin to prevent Codex CLI hang (#34) (328ea18), closes #33
• version: mock binary in version test for CI compatibility closes #27 (#31) (41c6572)

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[github-actions]

🤖 Created releases:

• v0.3.0

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