v0.15.5 - cross-engine AI answer panel

New tool: analyze_ai_panel - aggregate several AI engines' answers to the same question into one cross-engine view. Shows where your brand is NAMED vs merely CITED (the 'cited != recommended' gap), share of voice, the competitor leaderboard, and your rank. Paste-based, no automation or keys. Also fixes a brand-detection false positive when the brand name is part of its own domain. No scoring changes.