refactor: centralize pre-commit file filtering

git-hooks/pre-commit

@@ -2,7 +2,21 @@
 
 set -euo pipefail
 
-# Security: avoid option-injection from malicious file names (e.g. "--force").
+ROOT_DIR="$(git rev-parse --show-toplevel 2>/dev/null || pwd)"
+RUN_NODE_TOOL="$ROOT_DIR/scripts/pre-commit/run-node-tool.sh"
+FILTER_FILES="$ROOT_DIR/scripts/pre-commit/filter-staged-files.mjs"
+
+if [[ ! -x "$RUN_NODE_TOOL" ]]; then
+  echo "Missing helper: $RUN_NODE_TOOL" >&2
+  exit 1
+fi
+
+if [[ ! -f "$FILTER_FILES" ]]; then
+  echo "Missing helper: $FILTER_FILES" >&2
+  exit 1
+fi
+
+# Security: avoid option-injection from malicious file names (e.g. "--all", "--force").
 # Robustness: NUL-delimited file list handles spaces/newlines safely.
 mapfile -d '' -t files < <(git diff --cached --name-only --diff-filter=ACMR -z)
 
@@ -10,24 +24,15 @@ if [ "${#files[@]}" -eq 0 ]; then
   exit 0
 fi
 
-lint_files=()
-format_files=()
-for file in "${files[@]}"; do
-  case "$file" in
-    *.ts | *.tsx | *.js | *.jsx | *.mjs | *.cjs) lint_files+=("$file") ;;
-  esac
-
-  case "$file" in
-    *.ts | *.tsx | *.js | *.jsx | *.mjs | *.cjs | *.json | *.md | *.mdx) format_files+=("$file") ;;
-  esac
-done
+mapfile -d '' -t lint_files < <(node "$FILTER_FILES" lint -- "${files[@]}")
+mapfile -d '' -t format_files < <(node "$FILTER_FILES" format -- "${files[@]}")
 
 if [ "${#lint_files[@]}" -gt 0 ]; then
-  pnpm lint --fix -- "${lint_files[@]}"
+  "$RUN_NODE_TOOL" oxlint --type-aware --fix -- "${lint_files[@]}"
 fi
 
 if [ "${#format_files[@]}" -gt 0 ]; then
-  pnpm format -- "${format_files[@]}"
+  "$RUN_NODE_TOOL" oxfmt --write -- "${format_files[@]}"
 fi
 
 git add -- "${files[@]}"