prep docs and service updates

scripts/cleanup-runner-space.sh

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+#!/usr/bin/env bash
+# Safe-ish workspace cleanup when the runner hits “No space left on device”.
+# Deletes build/test outputs that are regenerated; preserves offline caches and sources.
+set -euo pipefail
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+echo "Cleaning workspace outputs under: ${ROOT}"
+
+rm -rf "${ROOT}/TestResults" || true
+rm -rf "${ROOT}/out" || true
+rm -rf "${ROOT}/artifacts" || true
+
+# Trim common temp locations if they exist in repo workspace
+[ -d "${ROOT}/tmp" ] && find "${ROOT}/tmp" -mindepth 1 -maxdepth 1 -exec rm -rf {} +
+
+echo "Done. Consider also clearing any runner-level /tmp outside the workspace if safe."