chore: clean up web ui repo hygiene

.githooks/pre-commit

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root="$(git rev-parse --show-toplevel)"
+cd "${repo_root}"
+
+mapfile -t staged_files < <(git diff --cached --name-only --diff-filter=ACMR)
+if [[ ${#staged_files[@]} -eq 0 ]]; then
+  exit 0
+fi
+
+run_backend=false
+run_frontend=false
+
+for file in "${staged_files[@]}"; do
+  case "${file}" in
+    app.py|supertonic_gateway.py|voice_rtc.py|wisper.py|requirements.txt|.ruff.toml|scripts/check_python_quality.sh)
+      run_backend=true
+      ;;
+    frontend/*|scripts/check_frontend_quality.sh)
+      run_frontend=true
+      ;;
+  esac
+done
+
+if [[ "${run_backend}" == "true" ]]; then
+  echo "Running backend Python checks..."
+  ./scripts/check_python_quality.sh
+fi
+
+if [[ "${run_frontend}" == "true" ]]; then
+  echo "Running frontend checks..."
+  ./scripts/check_frontend_quality.sh
+fi