Fix SearchBar — increase gap so focus ring doesn't touch button

- Gap 6px → 10px (gap: 2.5) to clear the 5px focus ring

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

src/components/molecules/SearchBar/SearchBar.tsx

@@ -111,7 +111,7 @@ export const SearchBar = React.forwardRef<HTMLDivElement, SearchBarProps>(
           {
             display: 'flex',
             alignItems: 'flex-start',
-            gap: 1.5,
+            gap: 2.5,
             ...(fullWidth && { width: '100%' }),
           },
           ...(Array.isArray(sx) ? sx : [sx]),