Thanks for helping. Keep it lean and human-maintainable: smallest change that works, one concern per PR, clear names, obvious control flow.

1. Read the status / roadmap: skylines#2603
2. Prefer fixing something on the current Platform / Hygiene / Product focus over large refactors
3. Search existing issues and PRs first

Main codebase: skylines-project/skylines

• Local/dev Docker: see INSTALL.docker.md
• Production-oriented Docker: see docs/DEPLOY.docker.md (when present on master)
• Code bar for agents/editors: .cursor/rules/lean-maintainable.mdc

• One purpose per PR
• No drive-by refactors or unrelated dependency bumps
• Describe why, link the issue
• CI should be green

Use the existing labels. high-priority is reserved for the shortlist called out in #2603. Add needs-repro when behavior isn’t confirmed on current master.