Content restriction rules for The Signatry — what is and isn't allowed to be produced, independent of format. Covers: never inventing a fact about The Signatry, never fabricating a donor quote/testimonial/persona, donor photo attribution integrity, gift-amount confidentiality, and the confidentiality/board-only source restriction. Use this whenever building or reviewing any Signatry deliverable — decks, documents, PDFs, emails, web/social copy — regardless of format. Depends on `signatry-facts` for the actual factual values and the standing donor clearance policy; this skill states the rules, `signatry-facts` holds the data those rules are checked against.
