Windmill Svelte Patterns

Apply these Windmill-specific patterns when writing Svelte code in frontend/. For general Svelte 5 syntax (runes, snippets, event handling), use the Svelte MCP server.

Before writing any UI (MUST)

Do both of these before the first line of markup — not after, and not only when something looks unfamiliar.

1. Find the component that already exists. frontend/src/lib/components/common/index.ts is the design-system barrel — 28 lines, read it in full. It exports far more than the three documented below: Alert, Badge, Breadcrumb, Drawer/DrawerContent, Menu/MenuItem, Tabs/Tab/TabContent, Skeleton, FileInput, RadioCard, Section, Kbd, ActionRow, ClearableInput, CopyButton, SecondsInput, UndoRedo, Url.