Pinned the CLI to shadcn@2.3.0 rather than the latest (4.16.0): the
latest generation targets Tailwind v4-only syntax (bare-value parens
like `gap-(--card-spacing)`, the `in-*` variant, `--spacing()`) that
silently fails to compile under this project's Tailwind v3.4.6.
2.3.0 is the last CLI generation producing classic hsl(var(--x))
v3-compatible component output.
Swapped @radix-ui/react-icons for the already-installed lucide-react
in dialog.tsx, and dropped sonner's next-themes dependency (the app
has no dark-mode toggle, so Toaster is hardcoded to theme="light").
Old custom src/components/ui/Button.tsx, Card.tsx, and Field.tsx are
removed here; call sites are updated in the following commits.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
