Write paid social ad copy variant sets for Meta (Facebook and Instagram), LinkedIn, X, and TikTok placements. Use when the user says "write ad copy", asks for "Facebook ad variants", wants a "LinkedIn ad for this offer", or asks for "ad angles for" a product or promotion. For each requested placement it produces 3–5 variants built from an angle matrix — pain, aspiration, social proof, objection-flip, honest urgency — with every copy part written to the platform's real character limits, plus a one-line creative brief per variant for the designer. It reads social-context.md for brand voice, audience, and offer positioning before drafting. Copy is checked against platform ad…