Write a prompt for patina-mode

Return a short prompt that starts one patina-mode run. Do not start the run or perform the work that the prompt describes.

Read the current contracts

1. Read the writing-for-agents skill in full. Apply its leading-word, positive-phrasing, and completion-criterion rules.
2. Open the active patina-mode skill's SKILL.md from the skills catalog. Read it in full without executing it. Treat its Playbooks section as the routing source of truth.
3. Select the one governing playbook that most specifically matches the operator's work. Read that playbook in full from the path named by patina-mode; let it invoke other playbooks internally.
4. When a repository is in scope, read AGENTS.md at the repository root and the repository documents that it says govern the work.

If either required skill is unavailable, stop and name the missing skill.