0.6.9

• Windows review: platform helpers in lib/host-utils.js (PATHEXT lookup, containment on either separator, file names in any script, RFC 5987 download names, Windows on ARM falls back to the x64 probe), panel file names on either separator.
• A three-OS smoke test (test/smoke.mjs, workflow smoke) exercises the host code against a stand-in engine and the packed print-probe on a synthetic print on windows-latest, ubuntu-latest and macos-latest; it caught the probe writing Windows paths unescaped into its crop and symbols results, fixed in probe 0.2.3.
• Skill: chain anchors serve the sketch's own face; bottom-face holes keep the coordinate idiom.