florian.berthold
aa36c846d7
Add t() translation function to i18n.rs with ~200 key/value pairs covering navigation, card headers, field labels, buttons, filters, planting calendar rows, and general UI text in both German and English. Updated all 11 source files to use t(&lang, "key") instead of hardcoded English strings: app.rs (sidebar nav), all 7 page files (species, cultivars, families, suppliers, home, search, sources), and all 3 component files (planting_calendar, table_controls, plant_card). Boolean values (Yes/No/Annual) are also translated.