Extend FlexibleDateInput with contextual help text for all precision options (exact, month, year, decade, century, approximate), including an Info icon import and dynamic guidance displayed under the dropdown. Also prepare for enhanced SelectItem labels and optional tooltip enhancements.
Batch update all date precision handling to use expanded DatePrecision, replace hardcoded day defaults, and adjust related validation, UI, and helpers. Includes wrapper migration across Phase 1-3 functions, updates to logs, displays, and formatting utilities to align frontend with new precision values ('exact', 'month', 'year', 'decade', 'century', 'approximate').