Add migration scripts and preload participation awards script

- Created migration index file to manage database migrations.
- Added script to preload participation awards and related blog posts into the CMS.
- Introduced new types and default data for application phases.
- Added award articles data structure for the upcoming awards.

src/spa/pages/Press.tsx

@@ -524,6 +524,7 @@ const Press: React.FC = () => {
           {/* Left col */}
           <div
             style={{
+              background: '#fff',
               padding: isMobile ? '48px 24px' : '88px 80px',
               display: 'flex',
               flexDirection: 'column',