refactor: Streamline DWD data processing by selectively unzipping data files and enhancing download performance through the removal of a blocking size check, larger download chunks, and dynamic total size detection.
feat: Enhance station label generation with detailed date ranges and resolution, and refine date range defaults and validation based on data resolution.
feat: Add monthly average min/max temperature and snow sum variables, update date range constraints and defaults for monthly resolution, and enhance temperature plot visualization with tiered bands.
Refactor DWD R functions into a package-like structure, introduce new weather data plotting and cleaning utilities, and add web assets for improved UI.