Song Flags & Notes for Unfinished Projects

Summary Add a simple flag and notes system to each song so users can mark projects as incomplete and keep track of what still needs to be done. Problem When working on a large project such as an album, it is easy to lose track of songs that still need work. For example, a user may need to extend a song, fix an outro, retry a failed generation, or make another adjustment. Without a way to leave a note, users have to rely on memory or external notes, which can become difficult when working on many songs back-to-back. Proposed solution Allow users to flag a song as needing attention and add a personal note to it. Examples: ⭐ Needs outro ⚠️ Extension failed 📝 Needs lyric correction ✅ Ready for release The note should be visible from the user's Songs page or song details so they can quickly see what remains to be completed. Why this would help This would make Songer much easier to use for larger projects, especially albums and multi-song workflows. It would help users organize unfinished work, avoid forgetting incomplete songs, and keep track of the next action for each project.