Adds a PR template (linked issue, what and why, how it was verified, review focus), a minimal reproduction field on the bug form and required acceptance criteria on the feature form, and CONTRIBUTING.md with the issue and PR rules. A PR check labels needs-info and leaves one comment when the issue link or the verification section is missing; it only reads the title and description.
AGENTS.md is now tracked, with CLAUDE.md linking to it, and covers layout, rules, commands, the checks CI runs, pitfalls and parallel worktrees. The verify and issue-fix skills are shared under .agents/skills and linked from .claude/skills; the rest of .claude/ stays local.
Structured issue forms for bug reports and feature requests: environment, steps, expected/actual behaviour and logs for bugs; problem, proposal and alternatives for features. Both ask reporters to search existing issues first and keep one problem per issue; blank issues are disabled and the latest release is linked from the chooser. Forms do not require a particular language.
Refs #860
l0ng-ai