#!/usr/bin/env bash
# Install the G.U.I.D.E. git hooks (SPEC.md §4). Idempotent — run anytime.
set -euo pipefail

ROOT="$(git rev-parse --show-toplevel)"
SRC="$ROOT/scripts/hooks/pre-commit"
DST="$ROOT/.git/hooks/pre-commit"

if [ ! -f "$SRC" ]; then
  echo "❌ $SRC not found." >&2
  exit 1
fi

cp "$SRC" "$DST"
chmod +x "$DST"
echo "✅ Installed pre-commit hook → $DST"
echo "   It runs tests/test_sanity.py and blocks commits if they fail."