Add docs governance and Czech parity updates

scripts/check_markdown_links.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$repo_root"
+
+missing_count=0
+
+while IFS=$'\t' read -r src link; do
+  case "$link" in
+    ''|'#'*|mailto:*|http://*|https://*)
+      continue
+      ;;
+  esac
+
+  # Remove optional anchors and query strings for filesystem checks.
+  target="${link%%#*}"
+  target="${target%%\?*}"
+
+  [[ -z "$target" ]] && continue
+
+  if [[ "$target" == /* ]]; then
+    # Treat /path as repository-root relative for markdown in GitHub.
+    path="${repo_root}${target}"
+  else
+    path="$(dirname "$src")/$target"
+  fi
+
+  if [[ ! -e "$path" ]]; then
+    printf 'BROKEN: %s -> %s (missing: %s)\n' "$src" "$link" "$path"
+    missing_count=$((missing_count + 1))
+  fi
+done < <(
+  while IFS= read -r file; do
+    perl -ne 'while(/\[[^\]]*\]\(([^)]+)\)/g){print "$ARGV\t$1\n"}' "$file"
+  done < <(rg --files -g '*.md')
+)
+
+if [[ "$missing_count" -gt 0 ]]; then
+  printf '\nFound %d broken markdown link(s).\n' "$missing_count"
+  exit 1
+fi
+
+echo "Markdown local links: OK"
+