Initial commit: Clean slate for Mai project

.claude/skills/check/SKILL.md

@@ -0,0 +1,14 @@
+---
+name: check
+description: Run repo checks (ruff + pytest).
+disable-model-invocation: true
+---
+
+Run:
+- Windows: powershell -ExecutionPolicy Bypass -File scripts/check.ps1
+- Linux/WSL: bash scripts/check.sh
+
+If a check fails:
+- capture the error output
+- propose the smallest safe fix
+- re-run checks