init: common-skills v1

.githooks/pre-push

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+# Pre-push hook: run regression check on changed skills only.
+# Install: cp .githooks/pre-push .git/hooks/pre-push && chmod +x .git/hooks/pre-push
+
+set -euo pipefail
+
+# Find skills changed in this push
+changed_skills=$(git diff --name-only HEAD~1 HEAD 2>/dev/null | grep '^skills/' | cut -d/ -f2 | sort -u || true)
+
+if [[ -z "$changed_skills" ]]; then
+  exit 0
+fi
+
+echo "🔍 Running regression check for changed skills: $changed_skills"
+
+for skill in $changed_skills; do
+  if [[ ! -f "skills/$skill/evals/evals.json" ]]; then
+    echo "❌ Missing evals/evals.json for skill: $skill"
+    echo "   Every skill must have evals before it can be pushed."
+    exit 1
+  fi
+  python scripts/run_evals.py "$skill" --check-regression
+done
+
+echo "✅ All checks passed."