Integrates Bandcamp and SoundCloud players for the ParVagues live set
into the CosmicFest page.

Key changes:
- Added Bandcamp embed for track-by-track listening.
- Added SoundCloud embed for the continuous mix (downloads enabled).
- Updated "prends la prochaine vague" button to a mailto link.
- Reduced padding and font sizes for lineup tiles for a more compact look.
- Ensured lineup artist names and emojis stay on a single line with responsive font sizing.
- Improved hero section text contrast.
- Enhanced V0 gallery:
    - Improved visibility of alt text for photos.
    - Made entire video items clickable links.
    - Standardized gallery item styling.
- General mobile-first and accessibility improvements.