feat: add bds core, locale updates and safety fixes

lib/logger.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+log() {
+  local level="$1"
+  shift
+  printf '[%s] [%s] %s\n' "$(date +'%Y-%m-%d %H:%M:%S')" "$level" "$*"
+}
+
+info() {
+  log "INFO" "$@"
+}
+
+warn() {
+  log "WARN" "$@"
+}
+
+error() {
+  log "ERROR" "$@"
+}
+
+debug() {
+  if [[ "${DEBUG:-no}" == "yes" ]]; then
+    log "DEBUG" "$@"
+  fi
+}
+
+fail() {
+  error "$@"
+  exit 1
+}
+
+run_cmd() {
+  if [[ "${DRY_RUN:-no}" == "yes" ]]; then
+    info "[dry-run] $*"
+    return 0
+  fi
+  "$@"
+}