A concrete filter type that applies a simple WHERE clause to an Eloquent query. It implements the BaseHttpEloquentFilter interface and can be used to declaratively add filtering criteria from HTTP requests. The class is self-contained, well-structured, and demonstrates a reusable filter strategy pattern that can be extracted and applied to any Laravel model with minimal adaptation.

A collection class that provides aggregate scopes (countByDays, sumByDays, etc.) for time-based metrics on Eloquent models. It encapsulates common data aggregation logic for dashboard charts and can be reused across projects to generate time series data. The class is clean, parameterized, and does not depend on specific business models.

A cell component that formats numeric values as currency strings for table columns. It provides configurable precision, locale, and symbol, and can be easily extracted and reused in any data table or grid component that requires consistent currency formatting. The implementation is isolated and follows a simple decorator pattern.