Licensing stance: permissive, commercial-safe

Invoke the licensing-review skill before incorporating or upgrading any third-party material — code, models, fonts, audio, images and datasets alike. Use only material permitting commercial use, modification and redistribution in a closed-source paid product with no fee, royalty or future payment; copyleft, share-alike, noncommercial, no-derivatives, field-of-use, time-limited and revocable licences are excluded without exception. A marketplace tag is not proof, unresolved material stays out, and no licence clears trademark risk. Lists: docs/preferences.md.