Species detail now shows a "Companion Plants" card (left column, after
Ecology) with beneficial/antagonistic sub-lists. Each entry links to
the companion species and shows the mechanism.
Home page gains stats cards, quick-filter buttons, and a hero section.
Species list supports URL query params for quick-filter links.
New /api/v1/stats endpoint provides database counts.
i18n keys added for DE/EN: card.companion_plants, companions.beneficial_for,
companions.antagonistic_for, stat.*, filter.*, home.*.
florian.berthold
00e26b3a84