Add Card atom component

- Create card component tokens (borderRadius, padding, shadow, border, background)
- Build Card component with elevated/outlined variants, interactive hover, padding presets
- Add MUI theme overrides using card tokens (shadow.md resting, border for outlined)
- Create 8 Storybook stories: Default, Variants, Interactive, PaddingPresets,
  PriceCardPreview, ServiceOptionPreview, WithImage, RichContent
- Regenerate token pipeline outputs (7 new card tokens)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/theme/index.ts

@@ -476,9 +476,21 @@ export const theme = createTheme({
     MuiCard: {
       styleOverrides: {
         root: {
-          borderRadius: parseInt(t.BorderRadiusMd, 10),
+          borderRadius: parseInt(t.CardBorderRadiusDefault, 10),
+          backgroundColor: t.CardBackgroundDefault,
+          boxShadow: t.CardShadowDefault,
+          transition: 'box-shadow 150ms ease-in-out',
         },
       },
+      variants: [
+        {
+          props: { variant: 'outlined' },
+          style: {
+            boxShadow: 'none',
+            borderColor: t.CardBorderDefault,
+          },
+        },
+      ],
     },
     MuiOutlinedInput: {
       styleOverrides: {