feat(i18n): apply ORY bypass whitelist policy and add error-code tests

scripts/verify_userfront_error_i18n.sh

@@ -0,0 +1,98 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root="$(cd "$(dirname "$0")/.." && pwd)"
+whitelist_file="$repo_root/userfront/lib/core/constants/error_whitelist.dart"
+
+extract_internal_codes() {
+  awk '
+    /internalErrorWhitelistMessages/ { in_map=1; next }
+    in_map && /\};/ { in_map=0 }
+    in_map {
+      if (match($0, /'\''([a-z0-9_]+)'\''[[:space:]]*:/, m)) {
+        print m[1]
+      }
+    }
+  ' "$whitelist_file"
+}
+
+extract_ory_codes() {
+  awk '
+    /oryBypassErrorCodes/ { in_set=1; next }
+    in_set && /\};/ { in_set=0 }
+    in_set {
+      if (match($0, /'\''([a-z0-9_]+)'\''/, m)) {
+        print m[1]
+      }
+    }
+  ' "$whitelist_file"
+}
+
+extract_toml_section_keys() {
+  local file="$1"
+  local section="$2"
+  awk -v section="$section" '
+    /^[[:space:]]*\[[^]]+\][[:space:]]*$/ {
+      current=$0
+      gsub(/^[[:space:]]*\[/, "", current)
+      gsub(/\][[:space:]]*$/, "", current)
+      in_section=(current == section)
+      next
+    }
+
+    in_section {
+      if (match($0, /^[[:space:]]*([a-zA-Z0-9_]+)[[:space:]]*=/, m)) {
+        print m[1]
+      }
+    }
+  ' "$file"
+}
+
+check_section_keys() {
+  local expected_keys="$1"
+  local section="$2"
+  local file="$3"
+  local missing
+
+  missing="$(comm -23 \
+    <(printf '%s\n' "$expected_keys" | sed '/^$/d' | sort -u) \
+    <(extract_toml_section_keys "$file" "$section" | sort -u) \
+  )"
+
+  if [[ -n "$missing" ]]; then
+    echo "[FAIL] ${file} -> [${section}] 누락 키:"
+    printf '%s\n' "$missing" | sed 's/^/  - /'
+    return 1
+  fi
+
+  echo "[OK] ${file} -> [${section}]"
+}
+
+internal_codes="$(extract_internal_codes)"
+ory_codes="$(extract_ory_codes)"
+
+if [[ -z "$internal_codes" ]]; then
+  echo "[FAIL] 내부 whitelist 코드를 찾지 못했습니다."
+  exit 1
+fi
+
+if [[ -z "$ory_codes" ]]; then
+  echo "[FAIL] ORY bypass 코드를 찾지 못했습니다."
+  exit 1
+fi
+
+files=(
+  "$repo_root/locales/template.toml"
+  "$repo_root/locales/ko.toml"
+  "$repo_root/locales/en.toml"
+  "$repo_root/userfront/assets/translations/template.toml"
+  "$repo_root/userfront/assets/translations/ko.toml"
+  "$repo_root/userfront/assets/translations/en.toml"
+)
+
+for file in "${files[@]}"; do
+  check_section_keys "$internal_codes" "msg.userfront.error.whitelist" "$file"
+  check_section_keys "$ory_codes" "msg.userfront.error.ory" "$file"
+done
+
+echo "모든 에러 코드 i18n 키 검증이 완료되었습니다."