feat(ui): enable playing mixes / albums / singles from the card

[AnthonyLenglet]

Description

Adds the ability to play mixes / albums / singles directly from a play button on the card, rather than needing to navigate to it

AI Prompt (Optional)

🤖 AI Prompt Used

I want to look into adding this feature
https://github.com/sozercan/kaset/issues/347

when interacting with a playlist / album / single, I should be able to click on the thumbnail to play it directly without having to get into the playlist / album / single to play the first track

additionaly, I'm thinking that the title below the thumbnail should keep its role as a link leading to the content, that way we keep the current way of doing things, but at the new feature on top

AI Tool: Claude

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to change)
• 📚 Documentation update
• 🎨 UI/UX improvement
• ♻️ Refactoring (no functional changes)
• 🧪 Test update
• 🔧 Build/CI configuration

Related Issues

Closes #347

Changes Made

• enable playing mixes / albums / singles from the card

Testing

• Unit tests pass (xcodebuild test -only-testing:KasetTests)
• Manual testing performed
• UI tested on macOS 26+

Checklist

• My code follows the project's style guidelines
• I have run swiftlint --strict && swiftformat .
• I have added tests that prove my fix/feature works
• New and existing unit tests pass locally
• I have updated documentation if needed
• I have checked for any performance implications
• My changes generate no new warnings

Screenshots

[AnthonyLenglet]

reconverting to a draft, the artist page does not have the playable action on its cards, and I want to look into possibly make a shared card component, it doesn't look like there would be too much conflicts between each of them ?

[AnthonyLenglet]

making the shared card changes in https://github.com/AnthonyLenglet/kaset/tree/feature/shared-media-card

that way I can work on refactoring this part without bloating the main feature here, I'll make the PR for it when this gets the OK

proposal is detailed here:
https://github.com/AnthonyLenglet/kaset/blob/23b0399d24c9dd76a429558ca360a9720a2dc944/docs/adr/0026-shared-media-card.md

[AnthonyLenglet]

the single test error is in FavoritesManagerLegacyMigrationClaimTests, might be a race condition ? either way, I think it might be too out of scope for this branch