What's Changed

🐛 Bug fixes

• fix: require a real body, split ignore_authors, read the recorded author by @shenxianpeng in #689

Full Changelog: v2.20.3...v2.20.4

What's Changed

🚀 Features

• feat: replace the ASCII banner with a one-line failure header by @shenxianpeng in #682
• feat: add an agent skill for commit-check by @shenxianpeng in #679

🐛 Bug fixes

• fix: give CC017 advice that works before the commit exists by @shenxianpeng in #685
• fix: don't judge HEAD when --ai-attribution-only gets no text by @shenxianpeng in #684
• fix(skill): find the draft message file in worktrees and submodules by @shenxianpeng in #686

📝 Documentation

• docs: thank contributors in the README by @shenxianpeng in #681

Full Changelog: v2.20.2...v2.20.3

What's Changed

🐛 Bug fixes

• fix: name the AI-rules-only option --ai-attribution-only by @shenxianpeng in #677

Full Changelog: v2.20.1...v2.20.2

What's Changed

🚀 Features

• feat: check AI attribution alone and report the AI tools found by @shenxianpeng in #673
• feat(ai): detect credit trailers, Warp, Crush and plain Claude Code notices by @shenxianpeng in #672

👻 Maintenance

• ci: shard CodSpeed benchmarks across jobs instead of xdist processes by @invictustitan2 in #669
• ci: run CodSpeed benchmarks in parallel with pytest-xdist by @invictustitan2 in #668

Full Changelog: v2.20.0...v2.20.1

What's Changed

💥 Breaking changes

• chore: drop Python 3.10 (EOL) and remove the tomli dependency by @invictustitan2 in #662

🚀 Features

• feat(ai): reject commits whose author is an AI tool (CC017) by @shenxianpeng in #661
• feat(ai): detect Mistral Vibe and Qwen Code default signatures by @shenxianpeng in #659
• feat: subject length 0 turns the length check off by @shenxianpeng in #660
• feat(ai): detect Continue's default commit signature by @invictustitan2 in #657

🐛 Bug fixes

• fix(config): don't warn about [commit] require_verified, read by the App by @shenxianpeng in #656

📝 Documentation

• docs: say Python 3.11+ now that 3.10 is dropped by @shenxianpeng in #665

📦 Dependencies

• chore(deps): bump filelock from 3.32.5 to 4.2.1 by @dependabot[bot] in #664

Full Changelog: v2.19.5...v2.20.0

What's Changed

🐛 Bug fixes

• fix(branch): accept GitHub merge queue branches by default by @shenxianpeng in #653
• fix(ai): detect aider's default co-author trailer by @shenxianpeng in #652
• fix: exit 2 when git cannot read the repository by @shenxianpeng in #654

📦 Dependencies

• chore(deps-dev): bump nox from 2026.8.17 to 2026.10.20 in the pip group by @dependabot[bot] in #649
• chore(deps): bump the github-actions group with 3 updates by @dependabot[bot] in #650

Full Changelog: v2.19.4...v2.19.5

What's Changed

🚀 Features

• feat(branch): accept the agents/ prefix by default by @shenxianpeng in #645

🐛 Bug fixes

• fix(ai): detect Cursor's Made-with trailer by @shenxianpeng in #643

📝 Documentation

• docs: pin the README to v2.19.4 and list agents among the default branch types by @shenxianpeng in #646

🚦 Tests

• test: cover the three branches the suite never took by @shenxianpeng in #640

📦 Dependencies

• chore(deps): bump virtualenv from 21.14.9 to 21.14.13 by @dependabot[bot] in #644
• chore(deps): bump virtualenv from 21.7.13 to 21.14.9 by @dependabot[bot] in #641
• chore(deps): bump certifi from 2026.2.25 to 2026.10.19 by @dependabot[bot] in #642

Full Changelog: v2.19.3...v2.19.4

What's Changed

🐛 Bug fixes

• fix: refuse a quoted "false" for a true/false setting by @shenxianpeng in #636

📝 Documentation

• docs: point GitHub users at the App in the README by @shenxianpeng in #637
• docs: pin the README to v2.19.2 and list wrong-type config values under exit 2 by @shenxianpeng in #635

Full Changelog: v2.19.2...v2.19.3

What's Changed

🐛 Bug fixes

• fix: refuse config values of the wrong type by @shenxianpeng in #624
• fix(tag): check the remote tag name a pre-push line creates by @shenxianpeng in #615
• fix: print control characters and workflow commands in commit text inert by @shenxianpeng in #620
• fix: make the header fix and AI trailer regexes linear by @shenxianpeng in #626
• fix(merge-base): skip when the rebase target does not resolve by @shenxianpeng in #617
• fix(ai): detect Copilot coding agent commits by @shenxianpeng in #632

👻 Maintenance

• ci: unify workflow file names and titles across the org by @shenxianpeng in #629

📦 Dependencies

• chore(deps): bump ossf/scorecard-action from 2.4.4 to 2.5.0 in the github-actions group by @dependabot[bot] in #630

Full Changelog: v2.19.1...v2.19.2

What's Changed

🚀 Features

• feat(branch): accept develop by default, as the specification does by @shenxianpeng in #612

🐛 Bug fixes

• fix: match Signed-off-by only as a trailer line, in linear time by @shenxianpeng in #621
• fix: reject squash! and amend! commits when fixups are not allowed by @shenxianpeng in #613
• fix: check the message git will store, not its comments or -v diff by @shenxianpeng in #618
• fix(ai): detect trailers with a blank before the colon and Cursor Agent by @shenxianpeng in #623
• fix: exempt only tool-written merge subjects from subject rules by @shenxianpeng in #619
• fix: cap the size of an inherit_from parent config by @shenxianpeng in #614
• fix: read a word: prefix as a type only under conventional commits by @shenxianpeng in #622
• fix: find the config from a subdirectory of the repository by @shenxianpeng in #625
• fix: catch WIP markers followed by a newline, tab or dash by @shenxianpeng in #616

👻 Maintenance

• chore: update pre-commit hooks by @shenxianpeng in #627

Full Changelog: v2.19.0...v2.19.1