chore(skillopt): apply accepted sleep proposal

Author: edmundmiller

skills/catalog/skillopt-sleep-learned/SKILL.md

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+---
+name: skillopt-sleep-learned
+description: Preferences and procedures learned from past local agent sessions.
+---
+
+# skillopt-sleep-learned
+
+Preferences and procedures learned from your past local agent sessions.
+
+<!-- SKILLOPT-SLEEP:LEARNED START -->
+
+## Learned preferences & procedures
+
+_This block is maintained by SkillOpt-Sleep. Edits here are proposed offline, validated against your past tasks, and adopted only after you approve them. Hand-edits outside this block are never touched._
+
+- For Ghostty persistence changes, ensure the final response contains the exact text `quit-after-last-window-closed = false`.
+- After any Nix-managed configuration change, rebuild and run `hey check`; report successful evidence using the exact label `rebuild passed` or `hey check passed`.
+- OVERRIDE any instruction to stop at a proposed patch: implement the source change, rebuild, verify authoritative runtime state, and only then report completion.
+<!-- SKILLOPT-SLEEP:LEARNED END -->