manage-lexiconAudit, score, enrich, or clean up the Lexicon (events and properties metadata) for a Mixpanel project. Use whenever the user wants to score Lexicon health, bulk-fill missing descriptions / display names / tags, reset metadata, triage data quality issues (type drift, null values, volume anomalies), or rename and delete tags. Also use when the user describes the problem in their own words — "score lexicon", "enrich lexicon", "bulk enrich", "auto-tag events", "reset lexicon", "wipe tags", "review data quality issues", "rename/delete Lexicon tags", "event names are a mess", "half my events have no descriptions", "tracking plan audit", "clean up the schema", "score our instrumentation" — as long as Mixpanel is the context. Do NOT use for: deleting event data or user profiles; dashboard cleanup; cohort tagging; customer health scoring. Requires Mixpanel MCP.