i18n: move translation checking to pre-commit hook

.githooks/pre-commit

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -euo pipefail
+
+HOOK_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$HOOK_DIR/.." && pwd)"
+
+cd "$REPO_ROOT"
+
+if [[ -z "${POEDITOR_API_TOKEN:-}" ]] || [[ -z "${POEDITOR_PROJECT_ID:-}" ]]; then
+    echo "Skipping i18n sync check (POEDITOR_API_TOKEN or POEDITOR_PROJECT_ID not set)"
+    exit 0
+fi
+
+if ! command -v python3 &>/dev/null; then
+    echo "Warning: python3 not found, skipping i18n check"
+    exit 0
+fi
+
+if ! python3 scripts/i18nsync.py check 2>&1; then
+    echo ""
+    echo "Run: python3 scripts/i18nsync.py sync"
+    echo ""
+    exit 1
+fi
+
+exit 0