docs: sync consolidation and session starter

scripts/docs/docs_lint.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+cd "$ROOT_DIR"
+
+if ! command -v npx >/dev/null 2>&1; then
+  echo "npx not found; install Node.js to run markdown lint" >&2
+  exit 2
+fi
+
+echo "Running markdown lint on tracked markdown files"
+
+scope_file="docs/standards/lint_scope.txt"
+if [[ ! -f "$scope_file" ]]; then
+  echo "Missing lint scope file: $scope_file" >&2
+  exit 2
+fi
+
+mapfile -t scope_paths < <(sed '/^\s*$/d; /^\s*#/d' "$scope_file")
+files=()
+for p in "${scope_paths[@]}"; do
+  [[ -f "$p" ]] && files+=("$p")
+done
+
+if [[ "${#files[@]}" -eq 0 ]]; then
+  echo "No markdown files to lint"
+  exit 0
+fi
+
+npx -y markdownlint-cli2 --config .markdownlint.yml "${files[@]}"