Cross-platform parity auditor. Use when the user asks about feature parity between web and mobile, wants to compare platforms, find what's missing on mobile or web, audit platform gaps, or check web vs RN differences. Triggers on "parity", "web vs mobile", "web vs RN", "feature parity", "what's missing on mobile", "what's missing on web", "compare platforms", "platform gap", "audit parity".
