Support external vault roots across tooling

scripts/pre-commit

@@ -1,11 +1,15 @@
 #!/usr/bin/env bash
+# Generate and validate the selected vault graph before accepting a commit.
 set -euo pipefail
 
+framework_root="$(cd -- "$(dirname -- "$(readlink -f -- "${BASH_SOURCE[0]}")")/.." && pwd)"
+vault_root="${1:-${KNOWLEDGE_BASE_ROOT:-$framework_root}}"
 echo "[pre-commit] Generating and validating graph..."
-make graph
+"${PYTHON:-python3}" "$framework_root/scripts/generate-graph.py" --vault-root "$vault_root" --write --validate
 
-if ! git diff --quiet -- index/graph.json; then
+if ! git -C "$vault_root" ls-files --error-unmatch index/graph.json >/dev/null 2>&1 || \
+   ! git -C "$vault_root" diff --quiet -- index/graph.json; then
 	echo "[pre-commit] index/graph.json was modified by generation."
-	echo "[pre-commit] Run 'make graph' and stage index/graph.json before committing."
+	echo "[pre-commit] Stage the generated index/graph.json before committing."
 	exit 1
 fi